Beach
Hapuna Beach State Recreation Area
Hawaii County, United States · sea 27.1 °C at its warmest, in September

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 14 km offshore, at the nearest open water cell of a 0.25° grid.
About
Hāpuna Beach State Recreation Area is a large park and sandy beach on the Big Island of Hawaii. The Hapuna Beach Prince Hotel is also located adjacent to the beach.
Questions
How warm is the sea at Hapuna Beach State Recreation Area?
The sea off Hapuna Beach State Recreation Area averages 27.1 °C at its warmest, in September, and 24.5 °C at its coolest. These are monthly means from NOAA's OISST v2.1 satellite and buoy record for 1991 to 2020, sampled at the beach's own coordinates.
When can you swim at Hapuna Beach State Recreation Area?
The sea reaches 20 °C or more from All year. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Hapuna Beach State Recreation Area?
Hapuna Beach State Recreation Area is on the coast of Hawaii County, United States, at 19.9913, -155.8230. The map on this site flies straight to it.
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