Can you swim at Half Moon Bay Beach in April? — 21.0°C water
Yes — comfortable for most swimmers
Average sea · April
21.0°C
Live water now
…
Recommended wetsuit
Shorty 2mm
warm
Yes. With a 21.0°C average in April, most swimmers find Half Moon Bay Beach 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 Half Moon Bay 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 Half Moon Bay Beach in April?
Half Moon Bay Beach averages 21.0°C in April, based on long-run climatology for the Pacific Ocean.
Is the sea warm enough to swim at Half Moon Bay Beach in April?
Yes, most swimmers find 21.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Half Moon Bay Beach in April?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.
