Can you swim at Cape Henlopen 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. Cape Henlopen 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 Cape Henlopen 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 Cape Henlopen in September?
Cape Henlopen averages 27.0°C in September, based on long-run climatology for the Atlantic Ocean.
Is the sea warm enough to swim at Cape Henlopen in September?
Yes, most swimmers find 27.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Cape Henlopen in September?
