Beach
Gwangalli Beach
South Korea · sea 26.1 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
The Gwangalli Beach (Korean: 광안리 해수욕장) or Gwangan Beach is a beach in Gwangan 2(i)-dong, Suyeong District, Busan, South Korea. It is west of Haeundae Beach.
Questions
How warm is the sea at Gwangalli Beach?
The sea off Gwangalli Beach averages 26.1 °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 Gwangalli Beach?
The sea reaches 20 °C or more from June to October. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Gwangalli Beach?
Gwangalli Beach is on the coast of South Korea, at 35.1542, 129.1206. The map on this site flies straight to it.