Mean Annual Temperatures Busselton 1901 - 2008 (1901 - 1975 at Station # 9515 and 1999 to 2008 at Station # 9560 (1.1km distance) 15.9 15.35 15.4 15.75 15.55 16.1 16.1 14.85 15.65 15.85 15.5 16.25 15.8 15.85 16.9 15.75 15.35 16.5 15.9 16.4 16.8 15.5 16 15.85 15.9 15.95 15.95 16 15.4 16.55 16.05 15.7 17.05 16.55 15.65 16.4 16.5 16 16.15 16.2 16.55 16.2 15.8 16.15 16.25 15.7 15.9 16.6 17 16.35 15.9 16 16.2 16.3 16.55 16.3 17.1 16.65 15.45 16.9 17.1 17.4 16.25 16.75 16.35 17.05 15.65 16.45 16.65 15.9 17.3 17.5 17 16.5 17 17.3 16.95 16.45 16.85 17.05 17