Can you swim at Siesta Key Beach in August? — 28.0°C water

Yes — ideal swimming weather
Average sea · August
28.0°C
Live water now
Recommended wetsuit
No wetsuit
tropical

Yes. Siesta Key Beach averages 28.0°C in August — 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 Siesta Key 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 Siesta Key Beach in August?

Siesta Key Beach averages 28.0°C in August, based on long-run climatology for the Gulf of Mexico.

Is the sea warm enough to swim at Siesta Key Beach in August?

Yes, most swimmers find 28.0°C comfortable for unrestricted swimming.

Do I need a wetsuit at Siesta Key Beach in August?

No wetsuit needed.