WA temperature trends
cape naturaliste temperature comparison

This graph compares and is sourced to:

All data has been homogenised and adjusted by authorities to account for artificial factors such as changes in site location, exposure, instrumentation or observation procedures, particularly the High Quality BoM data since 1910 (... more).

Similar graphs are available for Albany, Bridgetown, Broome, Busselton, Cape Leeuwin, Carnarvon, Derby, Donnybrook, Esperance, Eucla, Eyre, Geraldton, Halls Creek, Kalgoorlie, Katanning, Kellerberrin, Marble Bar, Merredin, Perth, Rottnest Island, Southern Cross, Wandering and York.