Can you swim at Half Moon Bay Beach in May? — 23.0°C water
Yes — comfortable for most swimmers
Average sea · May
23.0°C
Live water now
…
Recommended wetsuit
Rash vest or swimsuit
warm
Yes. With a 23.0°C average in May, 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 May?
Half Moon Bay Beach averages 23.0°C in May, based on long-run climatology for the Pacific Ocean.
Is the sea warm enough to swim at Half Moon Bay Beach in May?
Yes, most swimmers find 23.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Half Moon Bay Beach in May?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.
