Can you swim at Cottesloe Beach in September? — 19.0°C water
Yes, but expect a fresh dip
Average sea · September
19.0°C
Live water now
…
Recommended wetsuit
Shorty 2mm
mild
It depends. Cottesloe Beach sits around 19.0°C in September; confident swimmers will be fine, casual bathers may prefer short sessions.
Monthly averages set expectations, but the specific beach today depends on wind, swell and recent weather. Check the live value at the top of this page or open the Cottesloe Beach live page for full conditions.
Best months to swim
January · February · March · December
Frequently asked questions
What is the average sea temperature at Cottesloe Beach in September?
Cottesloe Beach averages 19.0°C in September, based on long-run climatology for the Indian Ocean.
Is the sea warm enough to swim at Cottesloe Beach in September?
It is swimmable but fresh; confident swimmers will be fine without a wetsuit.
Do I need a wetsuit at Cottesloe Beach in September?
A 2 mm shorty is comfortable for sessions over 30 minutes.
