Seasonal ranking
Coldest sea temperature in South Korea in April
Where the sea is coolest across South Korea during April, ranked by long-term monthly average water temperature. Haeundae Beach (Busan, South Korea) is the coolest at around 15°C. Open any spot for today's live water temperature and a 7-day swim forecast.
- 1Haeundae BeachBusan · South Korea · Sea of JapanCool — shorty wetsuit recommended15°CApril average
- 2Gyeongpo BeachGangwon · South Korea · Sea of JapanCool — shorty wetsuit recommended15°CApril average
- 3Naksan BeachGangwon · South Korea · Sea of JapanCool — shorty wetsuit recommended15°CApril average
- 4Mangsang BeachGangwon · South Korea · Sea of JapanCool — shorty wetsuit recommended15°CApril average
- 5Sokcho BeachGangwon · South Korea · Sea of JapanCool — shorty wetsuit recommended15°CApril average
- 6Eurwangni BeachIncheon · South Korea · Yellow SeaCool — shorty wetsuit recommended15°CApril average
- 7Hyeopjae BeachJeju · South Korea · East China SeaPleasant — swimmable without a wetsuit21°CApril average
- 8Jungmun BeachJeju · South Korea · East China SeaPleasant — swimmable without a wetsuit21°CApril average
Coldest sea in April elsewhere
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South Korea in April — frequently asked questions
- Where is the sea coldest in South Korea in April?
- Haeundae Beach in South Korea has the coldest sea in South Korea in April, averaging about 15.0 °C. Gyeongpo Beach (15.0 °C) and Naksan Beach are the next coolest.
- How many beaches in South Korea are warm enough to swim in April?
- None of the top 8 ranked beaches in South Korea reach 22 °C in April, so a wetsuit is recommended for anything longer than a quick dip.
- How are these April sea temperatures calculated?
- Each figure is a long-term monthly average sea surface temperature for that location, so it reflects a typical April rather than today's reading. Open a beach page for the live water temperature and 7-day forecast.
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