Beach
Samyang Beach
South Korea · sea 26.6 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
Samyang Beach (Korean: 삼양해수욕장) is a beach in Samyang-dong, Jeju City, Jeju Province, South Korea. In 2023, its sandy portion had a length of 240m, width of 64m, and area of 13,821m2.
Questions
How warm is the sea at Samyang Beach?
The sea off Samyang Beach averages 26.6 °C at its warmest, in August, and 13.7 °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 Samyang Beach?
The sea reaches 20 °C or more from July to October. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Samyang Beach?
Samyang Beach is on the coast of South Korea, at 33.5263, 126.5862. The map on this site flies straight to it.