Can you swim at Sleeping Bear Dunes 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. Sleeping Bear Dunes 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 Sleeping Bear Dunes 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 Sleeping Bear Dunes in September?

Sleeping Bear Dunes averages 27.0°C in September, based on long-run climatology for the Lake Michigan.

Is the sea warm enough to swim at Sleeping Bear Dunes in September?

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

Do I need a wetsuit at Sleeping Bear Dunes in September?

No wetsuit needed.