Can you swim at Shirahama Beach Izu 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. Shirahama Beach Izu 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 Shirahama Beach Izu live page for full conditions.

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

Frequently asked questions

What is the average sea temperature at Shirahama Beach Izu in September?

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

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

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

Do I need a wetsuit at Shirahama Beach Izu in September?

No wetsuit needed.