Beach
Sokcho Beach
Gangwon Province, South Korea · sea 24.2 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
Sokcho Beach (Korean: 속초해수욕장) is a public beach in Sokcho, South Korea. It first opened in 1976. Its length is 940m and its width is 43m. The beach is host to various events.
Questions
How warm is the sea at Sokcho Beach?
The sea off Sokcho Beach averages 24.2 °C at its warmest, in August, and 8.1 °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 Sokcho Beach?
The sea reaches 20 °C or more from July to September. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Sokcho Beach?
Sokcho Beach is on the coast of Gangwon Province, South Korea, at 38.1889, 128.6050. The map on this site flies straight to it.