Seasonal ranking
Warmest sea temperature in South Korea in April
Where the sea is warmest across South Korea during April, ranked by long-term monthly average water temperature. Hyeopjae Beach (Jeju, South Korea) tops the list at around 21°C. Open any spot for today's live water temperature and a 7-day swim forecast.
- 1Hyeopjae BeachJeju · South Korea · East China SeaPleasant — swimmable without a wetsuit21°CApril average
- 2Jungmun BeachJeju · South Korea · East China SeaPleasant — swimmable without a wetsuit21°CApril average
- 3Haeundae BeachBusan · South Korea · Sea of JapanCool — shorty wetsuit recommended15°CApril average
- 4Gyeongpo BeachGangwon · South Korea · Sea of JapanCool — shorty wetsuit recommended15°CApril average
- 5Naksan BeachGangwon · South Korea · Sea of JapanCool — shorty wetsuit recommended15°CApril average
- 6Mangsang BeachGangwon · South Korea · Sea of JapanCool — shorty wetsuit recommended15°CApril average
- 7Sokcho BeachGangwon · South Korea · Sea of JapanCool — shorty wetsuit recommended15°CApril average
- 8Eurwangni BeachIncheon · South Korea · Yellow SeaCool — shorty wetsuit recommended15°CApril average
Warmest sea in April elsewhere
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South Korea in April — frequently asked questions
- Where is the sea warmest in South Korea in April?
- Hyeopjae Beach in South Korea has the warmest sea in South Korea in April, averaging about 21.0 °C. Jungmun Beach (21.0 °C) and Haeundae Beach follow close behind.
- 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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