Beach
Mākaha Beach Park
Mākaha, United States · sea 27 °C at its warmest, in September

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 15 km offshore, at the nearest open water cell of a 0.25° grid.
About
Mākaha Beach Park is a white sand beach in Mākaha, Hawaii, the neighbor of the beaches southeast of Ka‘ena Point such as Yokohama Bay (Keawa‘ula Beach) and Mākua Beach.
Questions
How warm is the sea at Mākaha Beach Park?
The sea off Mākaha Beach Park averages 27 °C at its warmest, in September, and 24.2 °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 Mākaha Beach Park?
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 Mākaha Beach Park?
Mākaha Beach Park is on the coast of Mākaha, United States, at 21.4770, -158.2210. The map on this site flies straight to it.