Can you swim at Poipu Beach in September? — 27.0°C water

Yes — ideal swimming weather
Average sea · September
27.0°C
Live water now
Recommended wetsuit
No wetsuit
tropical

Yes. Poipu Beach averages 27.0°C in September — bath-warm by European standards and comfortable for all-day swimming, snorkelling and families.

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 Poipu Beach live page for full conditions.

Best months to swim
May · June · July · August · September · October · November

Frequently asked questions

What is the average sea temperature at Poipu Beach in September?

Poipu Beach averages 27.0°C in September, based on long-run climatology for the Pacific Ocean.

Is the sea warm enough to swim at Poipu Beach in September?

Yes, most swimmers find 27.0°C comfortable for unrestricted swimming.

Do I need a wetsuit at Poipu Beach in September?

No wetsuit needed.