Sea temperature and swimming season in Australia

When the sea is warm enough to swim in 24 coastal cities in Australia.

City	Warmest	Coldest	Swimming season
Sydney	24.3°C Feb	18.3°C Aug	Oct – Jun (9 months)
Melbourne	21.5°C Feb	11.2°C Jul	Dec – Mar (4 months)
Adelaide	22.4°C Feb	13.2°C Aug	Dec – Apr (5 months)
Newcastle	23.5°C Feb	18.3°C Aug	Oct – Jun (9 months)
Sunshine Coast	26.9°C Feb	20.6°C Aug	all year
Wollongong	24.3°C Feb	18.3°C Aug	Oct – Jun (9 months)
Townsville	29.5°C Feb	22.5°C Jul	all year
Cairns	29.6°C Feb	24.0°C Jul	all year
Darwin	31.1°C Nov	26.0°C Jul	all year
Mandurah	22.7°C Feb	17.8°C Sep	Nov – Jul (9 months)
Mackay	28.6°C Jan	21.2°C Jul	all year
Coffs Harbour	25.8°C Feb	19.8°C Aug	all year
Bunbury	22.5°C Feb	16.6°C Aug	Nov – May (7 months)
Port Macquarie	26.4°C Feb	20.5°C Aug	all year
Gladstone	27.8°C Jan	19.8°C Jul	all year
Geraldton	24.1°C Feb	19.4°C Sep	all year
Albany	20.9°C Apr	17.7°C Sep	Dec – Jul (8 months)
Warrnambool	18.0°C Feb	13.9°C Sep	never comfortable
Busselton	21.9°C Feb	16.8°C Aug	Dec – May (6 months)
Devonport	19.1°C Feb	12.4°C Aug	Feb – Feb (1 months)
Whyalla	23.9°C Feb	12.9°C Jul	Nov – Apr (6 months)
Burnie	19.1°C Feb	12.3°C Aug	Feb – Feb (1 months)
Rockingham	22.8°C Feb	18.2°C Sep	Oct – Jul (10 months)
Port Pirie	24.0°C Jan	12.9°C Jul	Nov – Apr (6 months)