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Sea temperature in Australia in September
16°Cmild · monthly average
The sea around Australia averages 16°C in September. Cool — best for confident swimmers or short dips.
Monthly sea temperatures across the year
Best swim months
Jan, Feb, Dec
Warmest month
January (22°C)
Coolest month
July (15°C)
Best beaches in Australia
New South Wales
Bondi Beach
Popular New South Wales beach near Sydney.
New South Wales
Bronte Beach
Popular New South Wales beach near Sydney.
New South Wales
Tamarama Beach
Popular New South Wales beach near Sydney.
New South Wales
Coogee Beach
Popular New South Wales beach near Sydney.
New South Wales
Maroubra Beach
Popular New South Wales beach near Sydney.
New South Wales
Cronulla Beach
Popular New South Wales beach near Sydney.
New South Wales
Manly Beach
Popular New South Wales beach near Sydney.
New South Wales
Shelly Beach Manly
Popular New South Wales beach near Sydney.
New South Wales
Freshwater Beach
Popular New South Wales beach near Sydney.