Average temperature trends across Western Australia
The temperature averages have been extracted from the database publicly available at the Australian Bureau of Meteorology Climate Data Online platform and from the first ever climate study conducted in the colony of Western Australia before 1900. 30 combined average temperatures Coastal locations above 20,000 people Coastal locations below 20,000 people All locations except hot spots Earliest colonial data comparison The 30 locations are selected as these are the only ones on the public database with consistent historic weather records from around the year 1900. Some location records precede 1900 and some begin just after 1900. Many locations have seen their temperature recording stations moved since 1900, often from the town post office to a nearby airport. These locational changes may affect temperature readings. Aerial photographs are linked below so you can see the changes in location. The annual mean minimum and maximum data are also linked below where available at locations surveyed by the Bureau of Meteorology in its analysis of "corrected" temperature trends since 1910. Average mean minimum and maximum temperatures are calculated from April 2023 to March 2024, the most recent 12 month timeframe. Albeit accurate, this recent 12 month data for each location should be considered statistically unreliable due to its brevity compared with "climate normals" that have typical year-to-year weather variations smoothed over standard periods (commonly 30 years). This page is designed to provide a simple, convenient tool for people to observe temperature trends since weather records began in Western Australia, particularly in the context of perceived climate change. The state of Western Australia covers 2,532,400 square kilometres and was proclaimed a British colony in 1829. The eastern border is 1,862 kilometres long and there is 12,889 kilometres of coastline. The highest elevation is Mt Meharry at 1,249 metres (4,098 feet). Western Australia had a population of 2,667,000 in 2009, an increase of 19% since 2009. Western Australia's capital of Perth is said to be on the coalface of global climate change, with 2007 Australian of the Year and Climate Change Commission chairman Tim Flannery predicting in 2004 that it may become the first city in the world to become a ghost metropolis due to lack of water (BBC, Sydney Morning Herald). Combined average mean temperatures in all 30 locations across Western Australia
Late 1800s/early 1900s minima - 396.40 / 30 = 13.21
Late 1800s/early 1900s maxima - 760.10 / 30 = 25.34 Note: Busselton weather station closed in November 2011 and all temperatures below from December 2011 are sourced to Busselton Aero. Read more ... Note: Halls Creek Airport 2012 was renamed Halls Creek Meteorological Office and a new Halls Creek Airport 2079 became the primary site from 12 January 2017. To preserve location continuity, data for this page was sourced from site 2012 until December 2018 when the site ceased observations. Note: The Bureau of Meteorology failed to record minimum temperatures at Donnybrook 9534 from September 2019 to August 2021 and these missing values have an influence on the total averages calculated on this page. Donnybrook is a comparatively cool location and the site's missing year of minima means that annual minimum averages for all of WA and grouped sites in 2020/21 are not reliable. Note: The Bureau of Meteorology closed Wiluna 13012 in October 2020 and since then temperatures are from Wiluna Airport 13044. Parallel observations suggest the airport location is 0.1C warmer annually, and this may affect temperature averages on this page. Note: The Bureau of Meteorology failed to record any temperatures during different and/or consecutive months at Balladonia, Donnybrook and Kellerberrin during 2021/22 (and Donnybrook again in January-March 2024), meaning their 12 month readings are unreliable. Balladonia and Donnybrook are in the comparatively cool south of WA and these missing values have an influence on the total averages calculated on this page. Hot spots It should be noted that city and large town temperature readings may be influened by urban heat islands. Also, it is difficult to compare all locations in Western Australia without accounting for temperatures in coastal cities and towns that are strongly influenced by ocean proximity. Overnight minima in coastal locations are several degrees warmer than inland locations because of the thermal blanket created by the ocean, and strong sea breezes reduce daytime temperatures along much of Western Australia's coastline during early-mid summer. These natural variables have little impact on inland temperatures and this may influence comparative locational analysis. About 83% of Western Australia's total population live in the 15 coastal cities and towns. The five coastal locations in Western Australia with populations above 20,000 (Albany, Bunbury, Busselton, Geraldton, Perth) have been major and expanding urban centres since colonial settlement in the early 19th century. Not surprisingly, the capital city of Perth (population 2,092,649 in 2022) had the highest averaged increase in mean maximum temperature among all 31 locations, including pre-1910 data, over the hundred years. However, it should be noted that changes in temperature recording location from Mt Eliza near the central city to the northern suburb of Mt Lawley mean Perth only has a reliable climate history beginning in 1994. A temperature history comparison between the five large coastal centres and all other surveyed coastal locations suggests that the heat sink created by population and social infrastructure adds between .5 and 1 degree C to daytime maximum temperatures. Coastal locations with 2022 population above 20,000
Late 1800s/early 1900s minima - 58.90 / 5 = 11.78 Note: Minima are affected by relocation of temperature ground stations in all five large coastal locations during the 20th century, with consequent falls in recorded overnight minima due to greater distance from the ocean and removal of the urban heat influence. Check all five locations below (except Busselton) to confirm significant falls in minima coinciding with ground station relocations (Albany, Bunbury, Busselton, Geraldton, Perth).
Late 1800s/early 1900s maxima - 109.50 / 5 = 21.90 Coastal locations with 2022 population below 20,000
Late 1800s/early 1900s minima - 174.70 / 11 = 15.88 Maxima Late 1800s/early 1900s maxima - 285.20 / 11 = 25.93 Inland temperatures
Late 1800s/early 1900s minima - 162.8 / 14 = 11.63 Maxima Late 1800s/early 1900s maxima - 365.40 / 14 = 26.10 All locations except the five urban hot spots
As well as coastal vs inland natural variables, this comparison should create an upward bias on averages because all five towns and cities excluded from the 25 locations are in the coastal southern half of Western Australia, which is much cooler than the northern half and/or inland throughout the year.
Late 1800s/early 1900s minima - 337.50 / 25 = 13.50
Maxima Late 1800s/early 1900s maxima - 650.60 / 25 = 26.02
Earliest colonial climate data compared to the latest RAW data The West Australian colony's earliest known meteorological analysis is The Climate of Western Australia 1876-1899 (PDF 25.4mb) compiled in 1901 by then Government Astronomer William Ernest Cooke. This document contains raw, unregulated data that is considered unreliable.
(PDF 25.4mb) As the Government Astronomer explains in this historic document: "... it may be safely assumed that the results in this document give a close approximation to the truth; sufficiently so for all practical purposes, but scarcely to be considered quite accurate enough for the scientist." Nevertheless, this compilation contains the only known official climate records for the Western Australia colony before 1900 and although recording discrepancies may have been common, these mistakes might either inflate or deflate the real temperatures (e.g. thermometers near warm buildings or in cool locations, although a common error was heat radiation from the ground). The pre-1900 records are thus worth comparing with the most recent 30 years of regulated quality data from the Bureau of Meteorology, if only out of curiosity. See a detailed breakdown comparison of temperatures from the Cooke document.
Towns surveyed for mean minimum night temperatures by the Government Astronomer that are included in the Bureau of Meteorology's quality control sites include Albany (11.4 C), Broome (20.1 C), Cape Leeuwin (14 C), Carnarvon (16 C), Derby (21 C), Esperance (11.3 C), Geraldton (13.9 C), Kalgoorlie (12.2 C), Katanning (8.4 C), Perth (12.3 C), Rottnest (13.3 C), Southern Cross (10.2 C) and York (11 C). Combined, these 13 pre-1900 minima average 13.50 degrees C. Combining the same 13 locations from April 2023 to March 2024, the average minimum is 0.99 degrees C warmer than 1876-1899 at 14.49 degrees C. Maxima Towns surveyed for mean maximum day temperatures by the Government Astronomer that are included in the Bureau of Meteorology's quality control sites include Albany (18.5 C), Broome (31.7 C), Cape Leeuwin (19.6 C), Carnarvon (28.7 C), Derby (33.7 C), Esperance (21.4 C), Geraldton (24.5 C), Kalgoorlie (25.5 C), Katanning (22.5 C), Perth (24.2 C), Rottnest, (22.2 C), Southern Cross (26 C) and York (24 C). Combined, these 13 pre-1900 maxima average 24.80 degrees C. Combining the same 13 locations from April 2023 to March 2024, the average maximum is 1.29 degrees C warmer than 1876-1899 at 26.09 degrees C.
For locations below that were monitored by Government Astronomer William Ernest Cooke, his recordings are listed as Pre-1900 vs recent 30 years mean temperature. Albany (BoM station 9500) (Central Albany population 2016 - 29,373) 1881-1910 at Albany (elevation 3m, 30 years surveyed) Average mean minimum 11.2 Average mean maximum 18.9 1921-1950 (30 years) / min 11.6 / max 19.8 1931-1960 (30 years) / min 11.7 / max 19.7 1941-1970 (24 years) / min 11.9 / max 19.7 1951-1965 (14 years) / min 12.1 / max 19.6 Relocation to Albany Airport (elevation 68m, 12km distance) 1961-1990 (26 years) / min 10.4 / max 20.3 1971-2000 (30 years) / min 10.6 / max 20.3 12 months April 2023 - March 2024 at Albany Mean annual minimum 13.1 Mean annual maximum 20.1 BoM average means all available years Mean annual minimum 11.8 Mean annual maximum 19.5
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Recent picture of Albany Airport weather recording station Albany min/max temperature chart 1880-2008 Albany Airport min/mean/max chart 1910-2010 BoM historic annual minima from 1880 BoM historic annual maxima from 1880 BoM/GISS/HadCRUT historic data comparison for Albany Top of page Bridgetown (BoM station 9617) (elevation 150m, town population 2016 - 1,448) 1891-1920 (20 years surveyed) Average mean minimum 7.5 Average mean maximum 22.0 1921-1950 (30 years) / min 7.6 / max 22.5 1931-1960 (30 years) / min 7.4 / max 22.6 1941-1970 (30 years) / min 7.6 / max 22.4 1951-1965 (30 years) / min 8.0 / max 22.4 1961-1990 (30 years) / min 8.4 / max 22.2 1971-2000 (30 years) / min 8.7 / max 22.3 12 months April 2023 - March 2024 Mean annual minimum 9.1 Mean annual maximum 23.2 BoM average means all available years Mean annual minimum 8.6 Mean annual maximum 22.4 Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008
Street view picture of Bridgetown recording station Recent picture of weather recording station Bridgetown Post Office min/mean/max chart 1910-2010 BoM historic annual minima from 1901 BoM historic annual maxima from 1901 BoM/GISS/HadCRUT historic data comparison for Bridgetown Top of page Broome (BoM station 3003) (town population 2016 - 13,984) Pre-1900 vs recent 30 years mean temperature 1894-1899 (5 years surveyed) 78.6 F = 25.9 C 1981-2010 (30 years) Broome Airport = 26.7 C 1894-1920 at Broome Post Office Average mean minimum 21.0 Average mean maximum 31.8 1921-1950 (28 years) / min 21.2 / max 32.2 1931-1960 (21 years) / min 21.2 / max 32.4 1941-1953 (11 years) / min 21.1 / max 32.9 Relocation to Broome Airport 1941-1970 (30 years) / min 21.2 / max 32.2 1951-1980 (30 years) / min 21.2 / max 32.1 1961-1990 (30 years) / min 21.1 / max 32.2 1971-2000 (30 years) / min 21.2 / max 32.2 12 months April 2023 - March 2024 Mean annual minimum 21.7 Mean annual maximum 32.6 BoM average means all available years Mean annual minimum 21.3 Mean annual maximum 32.3
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Recent picture of weather recording station Broome min/max temperature chart 1895-1952 Broome Airport min/mean/max chart 1910-2010 BoM historic annual minima from 1939 BoM historic annual maxima from 1939 BoM/GISS/HadCRUT historic data comparison for Broome Top of page Bunbury (BoM station 9965) (city population 2016 - 72,402) Pre-1900 vs recent 30 years mean temperature 1880-1899 (18 years surveyed) 61.4 F = 16.3 C 1995-2010 (15 years) = 17 C 1882-1910 at Bunbury Post Office Average mean minimum 11.2 Average mean maximum 21.7 1921-1950 (28 years) / min 11.5 / max 21.8 1931-1956 (26 years) / min 11.4 / max 21.6 1941-1970 (22 years) / min 11.6 / max 21.5 1951-1980 (22 years) / min 12.1 / max 21.7 1965-1985 (21 years) / min 12.4 / max 21.9 1971-1985 (15 years) / min 12.5 / max 22.0 Relocation to Bunbury (elevation 68m, 12km distance) 1961-1990 (26 years) / min 10.4 / max 20.3 1971-2000 (30 years) / min 10.6 / max 20.3 1981-2010 (30 years) Average mean minimum 10.6 Average mean maximum 20 12 months April 2023 - March 2024 Mean annual minimum 12.0 Mean annual maximum 24.1 BoM average means all available years Mean annual minimum 11.1 Mean annual maximum 23.1
BoM historic annual minima from 1995 BoM historic annual maxima 1880 to 1985 BoM historic annual maxima from 1995 Top of page Busselton (BoM station 9569) (town population 2016 - 25,329) 1900-1910 at Busselton Shire Average mean minimum 9.8 Average mean maximum 21.5 1921-1950 (30 years) / min 10.2 / max 22.1 1931-1960 (30 years) / min 10.3 / max 22.2 1941-1970 (30 years) / min 10.7 / max 22.1 1951-1975 (25 years) / min 10.9 / max 22.1 1961-1975 (15 years) / min 11.2 / max 22.1 Relocation to Busselton Relocation to Busselton Aero 12 months April 2023 - March 2024 Mean annual minimum 10.7 Mean annual maximum 24.2 BoM average means all available years Mean annual minimum 11.3 Mean annual maximum 22.8
Note re Busselton station relocation BoM historic annual minima 1900 to 1975 BoM historic annual minima from 1998 BoM historic annual maxima 1900 to 1975 BoM historic annual maxima from 1998 BoM/GISS historic data comparison for Busselton Top of page Cape Leeuwin (BoM station 9518) (elevation 13m, nearest town Augusta 6.9km away with 2016 town population around 1,109) 1901-1930 (30 years surveyed) Average mean minimum 14.0 Average mean maximum 19.6 1921-1950 (30 years) / min 14.0 / max 19.4 1931-1960 (30 years) / min 14.0 / max 19.4 1941-1970 (30 years) / min 13.9 / max 19.5 1951-1980 (30 years) / min 13.9 / max 19.6 1961-1990 (30 years) / min 14.0 / max 19.9 1971-2000 (30 years) / min 14.2 / max 20.0 12 months April 2023 - March 2024 Mean annual minimum 15.0 Mean annual maximum 20.7 BoM average means all available years Mean annual minimum 14.1 Mean annual maximum 19.8
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Recent picture of weather recording station Cape Leeuwin min/max temperature chart 1897-2008 Cape Leeuwin min/mean/max chart 1910-2010 BoM historic annual minima from 1897 BoM historic annual maxima from 1897 BoM/GISS/HadCRUT historic data comparison for Cape Leeuwin Top of page Cape Naturaliste (BoM station 9519) (elevation 109m, nearest town Dunsborough 12km away with 2016 town population around 6,039) 1904-1920 (16 years surveyed) Average mean minimum 12.5 Average mean maximum 19.9 1921-1950 (30 years) / min 12.6 / max 20.3 1931-1960 (30 years) / min 12.5 / max 20.2 1941-1970 (30 years) / min 12.4 / max 20.2 1951-1980 (30 years) / min 12.5 / max 20.5 1961-1990 (30 years) / min 12.8 / max 20.8 1971-2000 (30 years) / min 13.0 / max 21.1 12 months April 2023 - March 2024 Mean annual minimum 13.4 Mean annual maximum 23.1 BoM average means all available years Mean annual minimum 12.7 Mean annual maximum 20.8 Cape Naturaliste aerial picture
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Cape Naturaliste min/mean/max chart 1910-2010 BoM historic annual minima from 1904 BoM historic annual maxima from 1904 BoM/GISS historic data comparison for Cape Naturaliste Top of page Carnarvon (BoM station 6011) (town population 2016 - 4,426) 1891-1920 at Carnarvon Post Office (elevation 5m, 29 years surveyed) Average mean minimum 16.2 Average mean maximum 27.1 1921-1950 (30 years) / min 17.2 / max 26.8 1931-1950 (20 years) / min 17.4 / max 26.9 1941-1950 (10 years) / min 17.5 / max 26.8 Relocation to Carnarvon Airport 1951-1980 (30 years) / min 17.1 / max 26.8 1961-1990 (30 years) / min 17.2 / max 27.2 1971-2000 (30 years) / min 17.3 / max 27.5 12 months April 2023 - March 2024 Mean annual minimum 17.3 Mean annual maximum 28.8 BoM average means all available years Mean annual minimum 17.2 Mean annual maximum 27.4
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Recent picture of weather recording station Carnarvon min/max temperature chart 1887-1950 Carnarvon Airport min/mean/max chart 1910-2010 BoM historic annual minima 1885 to 1950 BoM historic annual minima from 1945 BoM historic annual maxima 1885 to 1950 BoM historic annual maxima from 1945 BoM/GISS/HadCRUT historic data comparison for Carnarvon Top of page Derby (BoM station 3032) (town population 2016 - 3,325) 1891-1920 at Derby Post Office (elevation 8m, 30 years surveyed) Average mean minimum 21.3 Average mean maximum 33.6 1921-1950 (30 years) / min 21.8 / max 33.6 1931-1960 (30 years) / min 22.0 / max 33.8 1941-1970 (30 years) / min 21.8 / max 33.9 1951-1972 (21 years) / min 21.7 / max 34.1 1961-1990 (21 years) / min 21.5 / max 34.3 1971-2007 (17 years) / min 21.8 / max 34.5 Relocation to Derby Aero 1972-2000 (16 years) / min 21.7 / max 34.4 1981-2010 (30 years) / min 21.5 / max 34.6 12 months April 2023 - March 2024 Mean annual minimum 21.4 Mean annual maximum 35.2 BoM average means all available years Mean annual minimum 21.6 Mean annual maximum 34.7
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Derby min/max temperature chart 1888-1997 Derby Aero min/mean/max chart 1910-2010 BoM historic annual minima 1888 to 1997 BoM historic annual minima from 1972 BoM historic annual maxima 1880 to 1997 BoM historic annual maxima from 1972 BoM/GISS historic data comparison for Derby Top of page Donnybrook (BoM station 9534) (elevation 63m, town population 2016 - 2,520) 1901-1930 (29 years surveyed) Average mean minimum 9.3 Average mean maximum 22.6 1921-1950 (30 years) / min 9.3 / max 23.0 1931-1960 (30 years) / min 9.3 / max 23.2 1941-1970 (30 years) / min 9.6 / max 23.2 1951-1980 (30 years) / min 9.8 / max 23.2 1961-1990 (28 years) / min 10.1 / max 23.0 1971-2000 (28 years) / min 10.1 / max 23.0 12 months April 2023 - March 2024 Mean annual minimum 8.9 Mean annual maximum 22.1 BoM average means all available years Mean annual minimum 9.8 Mean annual maximum 23.2
BoM historic annual minima from 1902 BoM historic annual maxima from 1902 BoM/GISS historic data comparison for Donnybrook Top of page Esperance (BoM station 9789) (town population 2016 - 10,421) 1891-1920 at Esperance Post Office Average mean minimum 11.3 Average mean maximum 21.2 1921-1950 (30 years) / min 11.4 / max 21.3 1931-1960 (30 years) / min 11.4 / max 21.3 1941-1969 (29 years) / min 11.5 / max 21.3 1951-1969 (19 years) / min 11.5 / max 21.3 Relocation to Esperance 1971-2000 (30 years) / min 12.0 / max 21.8 1981-2010 (30 years) / min 12.1 / max 21.9 12 months April 2023 - March 2024 Mean annual minimum 12.6 Mean annual maximum 22.3 BoM average means all available years - Esperance Mean annual minimum 12.2 Mean annual maximum 21.2 1981-2010 at Esperance Aero (BoM station 9542) Average mean minimum 11.2 Average mean maximum 22.0 12 months April 2023 - March 2024 Mean annual minimum 11.6 Mean annual maximum 22.7 BoM average means all available years - Esperance Aero Mean annual minimum 11.3 Mean annual maximum 22.3
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Recent picture of weather recording station Esperance min/max temperature chart 1885-1968 Esperance min/mean/max chart 1910-2010 BoM historic annual minima 1883 to 1969 BoM historic annual minima from 1969 BoM historic annual maxima 1883 to 1969 BoM historic annual maxima from 1969 BoM/GISS/HadCRUT historic data comparison for Esperance Top of page Eucla (BoM station 11003) (elevation 93m, town population 2016 - 53) 1910-1920 (10 years surveyed) Average mean minimum 12.2 Average mean maximum 22.3 1926-1950 (21 years) / min 12.1 / max 21.9 1931-1960 (27 years) / min 11.8 / max 21.7 1941-1970 (25 years) / min 11.9 / max 21.9 1951-1980 (26 years) / min 11.9 / max 22.3 1961-1990 (25 years) / min 12.0 / max 22.8 1971-2000 (26 years) / min 12.1 / max 23.0 12 months April 2023 - March 2024 Mean annual minimum 12.7 Mean annual maximum 23.3 BoM average means all available years Mean annual minimum 12.4 Mean annual maximum 23.2
BoM historic annual minima from 1926 BoM historic annual maxima from 1926 BoM/GISS/HadCRUT historic data comparison for Eucla Top of page Eyre (BoM station 11019) (elevation 6m, population 2021 - 0) 1899-1920 (22 years surveyed) Average mean minimum 11.0 Average mean maximum 22.4 1983-2000 (13 years) / min 10.8 / max 22.9 1981-2010 (30 years) / min 10.5 / max 23.3 12 months April 2023 - March 2024 Mean annual minimum 10.3 Mean annual maximum 23.9 BoM average means all available years Mean annual minimum 10.7 Mean annual maximum 23.1
Eyre min/max temperature chart 1899-2008 BoM historic annual minima from 1899 BoM historic annual maxima from 1899 BoM/GISS historic data comparison for Eyre BoM historic annual maxima from 1899 BoM/GISS historic data comparison for Eyre Top of page Geraldton (BoM station 8315) (city population 2016 - 31,982) 1881-1910 at Geraldton Town Average mean minimum 13.9 Average mean maximum 24.6 1921-1950 (30 years) / min 14.8 / max 24.8 1931-1953 (22 years) / min 14.7 / max 24.8 1941-1953 (12 years) / min 14.5 / max 24.8 Relocation to Geraldton Airport 1941-1970 (28 years) / min 13.5 / max 25.6 1951-1980 (30 years) / min 13.5 / max 25.7 1961-1990 (30 years) / min 13.6 / max 25.9 1971-2000 (30 years) / min 13.7 / max 26.0 12 months April 2023 - March 2024 Mean annual minimum 13.8 Mean annual maximum 27.8 BoM average means all available years Mean annual minimum 13.6 Mean annual maximum 25.9
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Recent picture of weather recording station Geraldton min/max temperature chart 1880-1953 Geraldton Airport min/mean/max chart 1910-2010 BoM historic annual minima 1880 to 1953 BoM historic annual minima from 1941 BoM historic annual maxima 1880 to 1953 BoM historic annual maxima from 1941 BoM/GISS/HadCRUT historic data comparison for Geraldton Top of page Halls Creek (BoM station 2012) (town population 2016 - 1,546) 1898-1920 at Old Halls Creek Average mean minimum 17.8 Average mean maximum 33.5 1921-1950 (30 years) / min 17.8 / max 33.3 1931-1952 (21 years) / min 18.0 / max 33.5 1941-1969 (14 years) / min 18.0 / max 33.4 Relocation to Halls Creek Airport 1951-1980 (30 years) / min 19.9 / max 33.6 1961-1990 (30 years) / min 20.0 / max 33.5 1971-2000 (30 years) / min 20.2 / max 33.5 1981-2010 (30 years) Average mean minimum 20.3 Average mean maximum 33.6 12 months April 2023 - March 2024 Mean annual minimum 19.3 Mean annual maximum 33.7 BoM average means all available years Mean annual minimum 20.0 Mean annual maximum 33.6
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Recent picture of weather recording station Old Halls Creek min/max temperature chart 1898-1951 Halls Creek Airport min/mean/max chart 1910-2010 BoM historic annual minima 1898 to 1969 BoM historic annual minima from 1944 BoM historic annual maxima 1898 to 1969 BoM historic annual maxima from 1944 BoM/GISS/HadCRUT historic data comparison for Halls Creek Top of page Kalgoorlie (BoM station 12038) (shire population 2016 - 30,059) 1901-1930 at Kalgoorlie Post Office Average mean minimum 12.0 Average mean maximum 25.8 1921-1950 (30 years) / min 12.2 / max 25.7 1931-1953 (23 years) / min 12.2 / max 25.4 1941-1953 (13 years) / min 12.2 / max 25.2 Relocation to Kalgoorlie/Boulder Airport 1942-1970 (29 years) / min 11.2 / max 25.1 1951-1980 (30 years) / min 11.5 / max 25.1 1961-1990 (30 years) / min 11.7 / max 25.2 1971-2000 (30 years) / min 11.8 / max 25.2 1981-2010 (30 years) Average mean minimum 12.0 Average mean maximum 25.4 12 months April 2023 - March 2024 Mean annual minimum 12.8 Mean annual maximum 26.6 BoM average means all available years Mean annual minimum 11.8 Mean annual maximum 25.3
Recent picture of Kalgoorlie-Boulder Airport recording station Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Kalgoorlie Post Office min/max temperature chart 1897-1952 Kalgoorlie Airport min/mean/max chart 1910-2010 BoM historic annual minima 1897 to 1953 BoM historic annual minima from 1939 BoM historic annual maxima 1897 to 1953 BoM historic annual maxima from 1939 BoM/GISS/HadCRUT historic data comparison for Kalgoorlie Top of page Katanning (BoM station 10916) (elevation 310m, town population 2016 - 3,702) Pre-1900 vs recent 30 years mean temperature 1894-1899 (5 years surveyed) 59.8 F = 15.4 C 1981-2010 (30 years) = 15.9 C 1894-1920 (26 years surveyed) Average mean minimum 9.0 Average mean maximum 22.1 1921-1950 (30 years) / min 9.3 / max 22.0 1931-1960 (30 years) / min 9.4 / max 22.0 1941-1970 (30 years) / min 9.4 / max 22.0 1951-1980 (30 years) / min 9.5 / max 22.0 1961-1990 (30 years) / min 9.6 / max 22.1 1971-2000 (30 years) / min 9.6 / max 22.2 1999-2010 (12 years) Average mean minimum 9.4 Average mean maximum 22.4 12 months April 2023 - March 2024 Mean annual minimum 9.9 Mean annual maximum 22.5 BoM average means all available years Mean annual minimum 9.6 Mean annual maximum 22.5
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Katanning min/max temperature chart 1894-2008 Katanning min/mean/max chart 1910-2010 BoM historic annual minima from 1894 BoM historic annual maxima from 1894 BoM/GISS historic data comparison for Katanning Top of page Kellerberrin (BoM station 10073) (elevation 250m, town population 2016 - 875) 1911-1930 (21 years surveyed) Average mean minimum 10.5 Average mean maximum 25.1 1921-1950 (30 years) / min 10.8 / max 25.2 1931-1960 (30 years) / min 10.9 / max 25.0 1941-1970 (30 years) / min 11.1 / max 24.8 1951-1980 (30 years) / min 11.2 / max 24.9 1961-1990 (27 years) / min 11.2 / max 25.0 1971-2000 (28 years) / min 11.1 / max 25.1 1981-2010 (27 years) Average mean minimum 10.5 Average mean maximum 25.4 12 months April 2023 - March 2024 Mean annual minimum 9.6 Mean annual maximum 27.6 BoM average means all available years Mean annual minimum 10.7 Mean annual maximum 25.3
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Kellerberrin min/mean/max chart 1910-2010 BoM historic annual minima from 1910 BoM historic annual maxima from 1910 BoM/GISS historic data comparison for Kellerberrin kenskingdom analysis of HQ vs raw BoM data history including Kellerberrin Top of page Laverton (BoM station 12305) (town population 2016 - 340) 1901-1930 at Laverton Average mean minimum 13.2 Average mean maximum 27.3 1921-1950 (30 years) / min 13.2 / max 27.5 1931-1960 (28 years) / min 13.1 / max 27.4 1941-1969 (27 years) / min 13.2 / max 27.3 1951-1971 (18 years) / min 13.3 / max 27.3 1991-2010 at Laverton Aero Average mean minimum 13.7 Average mean maximum 26.9 12 months April 2023 - March 2024 Mean annual minimum 14.9 Mean annual maximum 28.5 BoM average means all available years Mean annual minimum 14.1 Mean annual maximum 27.2
BoM historic annual minima 1900 to 1971 BoM historic annual minima from 1991 BoM historic annual maxima 1900 to 1971 BoM historic annual maxima from 1991 Top of page Marble Bar (BoM station 4106) (elevation 182m, town population 2016 - 174) Historically the hottest town in Australia 1901-1930 (30 years surveyed) Average mean minimum 19.7 Average mean maximum 35.6 1921-1950 (30 years) / min 19.6 / max 35.5 1931-1960 (30 years) / min 19.7 / max 35.4 1941-1970 (30 years) / min 19.6 / max 35.2 1951-1980 (30 years) / min 19.9 / max 35.1 1961-1990 (30 years) / min 20.1 / max 35.0 1971-2000 (30 years) / min 20.4 / max 35.1 1981-2006 (26 years) Average mean minimum 20.4 Average mean maximum 35.3 12 months April 2023 - March 2024 Mean annual minimum 20.5 Mean annual maximum 36.5 BoM average means all available years Mean annual minimum 20.4 Mean annual maximum 35.6
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Marble Bar min/mean/max chart 1910-2004 BoM historic annual minima from 2000 BoM historic annual maxima from 2000 BoM/GISS historic data comparison for Marble Bar Top of page Merredin (BoM station 10092) (town population 2016 - 2,636) 1912-1940 at Merredin Research Station Average mean minimum 10.3 Average mean maximum 24.6 1921-1950 (30 years) / min 10.6 / max 24.7 1931-1960 (30 years) / min 10.6 / max 24.8 1941-1970 (30 years) / min 10.7 / max 24.7 1951-1980 (30 years) / min 11.0 / max 24.7 1961-1985 (24 years) / min 11.2 / max 24.8 1971-1985 (14 years) / min 11.4 / max 24.9 Relocation to Merredin 1971-2000 (30 years) / min 11.4 / max 24.8 1981-2010 (30 years) / min 11.4 / max 25.1 12 months April 2023 - March 2024 Mean annual minimum 12.0 Mean annual maximum 26.7 BoM average means all available years Mean annual minimum 11.5 Mean annual maximum 25.1
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Merredin min/mean/max chart 1913-2008 BoM historic annual minima 1912 to 1985 BoM historic annual minima from 1966 BoM historic annual maxima 1912 to 1985 BoM historic annual maxima from 1966 BoM/GISS historic data comparison for Merredin Top of page Northam (BoM station 10111) (elevation 170m, town population 2016 - 6,548) 1902-1920 (19 years surveyed) Average mean minimum 10.7 Average mean maximum 25.0 1921-1950 (30 years) / min 11.1 / max 25.1 1931-1960 (30 years) / min 10.9 / max 25.3 1941-1970 (30 years) / min 11.0 / max 25.3 1951-1980 (29 years) / min 10.9 / max 25.3 1961-1990 (28 years) / min 11.2 / max 25.4 1971-2000 (28 years) / min 11.2 / max 25.5 1981-2010 (29 years) Average mean minimum 10.8 Average mean maximum 25.7 12 months April 2023 - March 2024 Mean annual minimum 11.1 Mean annual maximum 27.1 BoM average means all available years Mean annual minimum 10.9 Mean annual maximum 25.4
BoM historic annual minima from 1902 BoM historic annual maxima from 1902 Top of page Onslow (BoM station 5017) (elevation 4m, town population 2016 - 848) Pre-1900 vs recent 30 years mean temperature 1887-1899 (11 years surveyed) 75.4 F = 24.1 C 1971-2000 (27 years) / Average mean temperature 25.1 C 1891-1920 (30 years surveyed) Average mean minimum 17.0 Average mean maximum 31.6 1921-1950 (30 years) / min 17.6 / max 31.3 1931-1960 (30 years) / min 17.9 / max 31.2 1941-1970 (29 years) / min 18.1 / max 31.2 1951-1980 (26 years) / min 18.4 / max 31.1 1961-1990 (26 years) / min 18.7 / max 31.2 1971-2000 (27 years) / min 19.2 / max 31.1 1981-2010 (30 years) Average mean minimum 19.4 Average mean maximum 31.2 12 months April 2023 - March 2024 Mean annual minimum 19.9 Mean annual maximum 33.0 BoM average means all available years Mean annual minimum 19.2 Mean annual maximum 32.1
Onslow min/max temperature chart 1887-2008 BoM historic annual minima from 1887 BoM historic annual maxima from 1887 Top of page Perth (BoM station 9225) (capital city population 2021 - 2.18 million / population history) Pre-1900 vs recent 30 years mean temperature 1876-1899 (24 years surveyed) 64.9 F = 18.3 C 1981-2010 (30 years) Perth Airport = 18.6 C Pre-1900 vs latest minimum temperature 1876-1899 (24 years) 54.2 F = 12.3 C 1981-2010 (30 years) Perth Airport = 12.4 C Pre-1900 vs latest maximum temperature 1876-1899 (24 years) 75.6 F = 24.2 C 1981-2010 (30 years) Perth Airport = 24.8 C (Perth Airport elevation 15m) 1897-1910 at Perth Regional Average mean minimum 12.8 Average mean maximum 22.8 1921-1950 (30 years) / min 13.0 / max 23.2 1931-1960 (30 years) / min 13.0 / max 23.3 1941-1970 (30 years) / min 13.1 / max 23.3 1951-1980 (30 years) / min 13.5 / max 23.6 1961-1990 (30 years) / min 14.0 / max 23.9 1971-1992 (21 years) / min 14.2 / max 24.1 Relocation to Perth Metro 1994-2009 (16 years) Average mean minimum 12.6 Average mean maximum 24.5 12 months April 2023 - March 2024 Mean annual minimum 13.6 Mean annual maximum 25.8 BoM average means all available years Mean annual minimum 12.9 Mean annual maximum 24.8
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Perth Gardens min/max temperature chart 1876-1929 Perth Airport min/mean/max chart 1910-2010 BoM historic annual minima 1876 to 1930 BoM historic annual minima 1897 to 1992 BoM historic annual minima from 1994 BoM historic annual maxima 1876 to 1930 BoM historic annual maxima 1897 to 1992 BoM historic annual maxima from 1994 BoM/GISS/HadCRUT historic data comparison for Perth Changes in location affecting Perth temperature history See 2012 thermal night scan of Perth CBD showing up to 4C Further quality information at Perth Weather Centre Top of page Rottnest Island (BoM station 9193) (population 2016 - 334) Pre-1900 vs recent 30 years mean temperature 1876-1899 (11 years surveyed) 63.9 F = 17.7 C 1981-2010 (30 years) Rottnest Island = 18.8 C 1882-1910 at Rottnest Island Lighthouse Average mean minimum 14.0 Average mean maximum 21.6 1921-1950 (29 years) / min 15.1 / max 21.5 1931-1956 (25 years) / min 15.0 / max 21.6 1941-1970 (21 years) / min 14.9 / max 21.5 1951-1980 (22 years) / min 15.0 / max 21.5 1965-1990 (25 years) / min 15.2 / max 21.6 1971-1995 (24 years) / min 15.3 / max 21.7 Relocation to Rottnest Island 1983-2010 (21 years) Average mean minimum 15.6 Average mean maximum 22.1 12 months April 2023 - March 2024 Mean annual minimum 16.1 Mean annual maximum 23.0 BoM average means all available years Mean annual minimum 15.7 Mean annual maximum 22.3
Recent picture of weather recording station Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Rottnest Lighthouse min/max temperature chart 1880-1995 Rottnest Island min/mean/max chart 1910-2010 BoM historic annual minima 1880 to 1995 BoM historic annual minima from 1983 BoM historic annual maxima 1880 to 1995 BoM historic annual maxima from 1983 BoM/GISS historic data comparison for Rottnest Island Top of page Southern Cross (BoM station 12320) (elevation 355m, town population 2016 - 638) Pre-1900 vs recent 30 years mean temperature 1895-1899 (4 years surveyed) 64.6 F = 18.1 C 1981-2010 (26 years surveyed) = 18.2 C 1895-1920 (25 years) Average mean minimum 10.3 Average mean maximum 25.8 1921-1950 (30 years) / min 10.4 / max 25.7 1931-1960 (30 years) / min 10.6 / max 25.5 1941-1970 (30 years) / min 10.6 / max 25.6 1951-1980 (30 years) / min 10.7 / max 25.5 1961-1990 (30 years) / min 10.9 / max 25.3 1971-2000 (30 years) / min 11.2 / max 25.1 1981-2007 (27 years) / min 11.3 / max 25.2 Relocation to Southern Cross Airfield
12 months April 2023 - March 2024 Mean annual minimum 11.3 Mean annual maximum 27.0 BoM average means all available years Mean annual minimum 10.5 Mean annual maximum 25.9
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Street view picture of Southern Cross recording station Southern Cross min/max temperature chart 1895-2006 Southern Cross min/mean/max chart 1910-2006 BoM historic annual minima 1895 to 2007 BoM historic annual minima from 1996 BoM historic annual maxima 1895 to 2007 BoM historic annual maxima from 1996 BoM/GISS historic data comparison for Southern Cross Top of page Wandering (BoM station 10917) (elevation 280m, town population 2016 - 294) 1901-1920 (19 years surveyed) Average mean minimum 8.0 Average mean maximum 22.9 1921-1950 (30 years) / min 8.3 / max 22.8 1931-1960 (30 years) / min 8.1 / max 22.9 1941-1970 (30 years) / min 8.2 / max 22.9 1951-1980 (30 years) / min 8.4 / max 23.1 1961-1990 (27 years) / min 8.7 / max 23.2 1971-2000 (27 years) / min 9.0 / max 23.5 1981-2003 (19 years) / min 9.1 / max 23.4 Relocation to Wandering 1998-2010 (12 years) / min 8.3 / max 23.7 12 months April 2023 - March 2024 Mean annual minimum 8.7 Mean annual maximum 24.5 BoM average means all available years Mean annual minimum 8.6 Mean annual maximum 23.8
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 Recent picture of weather recording station Wandering min/mean/max chart 1910-2010 BoM historic annual minima 1901 to 2003 BoM historic annual minima from 1998 BoM historic annual maxima 1901 to 2003 BoM historic annual maxima from 1998 BoM/GISS historic data comparison for Wandering Top of page Wiluna (BoM station 13012) (elevation 521m, town population 2016 - 236) 1901-1930 (28 years surveyed) Average mean minimum 14.0 Average mean maximum 28.8 1921-1950 (29 years) / min 14.1 / max 29.1 1931-1960 (30 years) / min 13.9 / max 29.0 1941-1970 (29 years) / min 13.9 / max 29.1 1951-1980 (29 years) / min 14.2 / max 29.1 1961-1990 (29 years) / min 14.7 / max 29.3 1971-2000 (29 years) / min 14.9 / max 29.3 1981-2010 (29 years) Average mean minimum 14.8 Average mean maximum 29.6 12 months April 2023 - March 2024 Mean annual minimum 15.7 Mean annual maximum 30.6 BoM average means all available years Mean annual minimum 14.3 Mean annual maximum 29.2
BoM historic annual minima from 1901 BoM historic annual maxima from 1901 Top of page Wyndham (BoM station 1013) (town population 2016 - 604) Pre-1900 vs recent 30 years mean temperature 1889-1899 (7 years surveyed) 85.4 F = 29.7 C 1968-2008 (40 years) = 29.4 C 1898-1920 at Wyndham Port Average mean minimum 24.2 Average mean maximum 34.1 1921-1950 (30 years) / min 24.2 / max 34.4 1931-1960 (30 years) / min 24.3 / max 35.1 1941-1962 (27 years) / min 24.1 / max 35.6 1951-1967 (17 years) / min 24.2 / max 35.8 Relocation to Wyndham 1971-2000 (30 years) / min 23.4 / max 35.7 1981-2010 (30 years) Average mean minimum 23.3 Average mean maximum 35.7 12 months April 2023 - March 2024 Mean annual minimum 22.3 Mean annual maximum 35.9 BoM average means all available years Mean annual minimum 23.1 Mean annual maximum 35.6
Wyndham min/max temperature chart 1898-1967 BoM historic annual minima 1898 to 1967 BoM historic annual minima from 1968 BoM historic annual maxima 1898 to 1967 BoM historic annual maxima from 1968 Top of page York (BoM station 10311) (town population 2016 - 2,548) Pre-1900 vs recent 30 years mean temperature 1880-1899 (18 years surveyed) 63.6 F = 17.6 C 1981-2010 (27 years) York = 17.4 C 1881-1910 at York Post Office Average mean minimum 10.5 Average mean maximum 24.3 1921-1950 (30 years) / min 10.4 / max 24.8 1931-1960 (30 years) / min 10.4 / max 24.8 1941-1970 (30 years) / min 10.5 / max 24.9 1951-1980 (29 years) / min 10.4 / max 25.0 1961-1990 (29 years) / min 10.5 / max 25.0 1971-1996 (24 years) / min 10.6 / max 25.2 Relocation to York 1996-2010 (16 years) Average mean minimum 9.5 Average mean maximum 25.4 12 months April 2023 - March 2024 Mean annual minimum 9.8 Mean annual maximum 26.8 BoM average means all available years Mean annual minimum 9.6 Mean annual maximum 25.7
Annual minimum temperature data 1910-2008 Annual maximum temperature data 1910-2008 York Post Office min/max temperature chart 1880-1995 York min/mean/max chart 1910-2010 BoM historic annual minima 1880 to 1996 BoM historic annual minima from 1996 BoM historic annual maxima 1880 to 1996 BoM historic annual maxima from 1996 BoM/GISS historic data comparison for York See the history of a weather station in Western Australia Top of page
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