Can you swim at Surfside Beach Nantucket in August? — 20.0°C water
Yes — comfortable for most swimmers
Average sea · August
20.0°C
Live water now
…
Recommended wetsuit
Shorty 2mm
warm
Yes. With a 20.0°C average in August, most swimmers find Surfside Beach Nantucket comfortable after the first 10–20 seconds of acclimatisation.
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 Surfside Beach Nantucket live page for full conditions.
Frequently asked questions
What is the average sea temperature at Surfside Beach Nantucket in August?
Surfside Beach Nantucket averages 20.0°C in August, based on long-run climatology for the Atlantic Ocean.
Is the sea warm enough to swim at Surfside Beach Nantucket in August?
Yes, most swimmers find 20.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Surfside Beach Nantucket in August?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.
