Seasonal ranking
Warmest sea temperature in Japan in April
Where the sea is warmest across Japan during April, ranked by long-term monthly average water temperature. Nishihama Beach (Okinawa, Japan) tops the list at around 28°C. Open any spot for today's live water temperature and a 7-day swim forecast.
- 1Nishihama BeachOkinawa · Japan · Philippine SeaWarm — comfortable swimming28°CApril average
- 2Sunayama BeachOkinawa · Japan · Philippine SeaWarm — comfortable swimming28°CApril average
- 3Kondoi BeachOkinawa · Japan · East China SeaWarm — comfortable swimming26°CApril average
- 4Kondoi Beach TaketomiOkinawa · Japan · East China SeaWarm — comfortable swimming26°CApril average
- 5Emerald Beach OkinawaOkinawa · Japan · East China SeaPleasant — swimmable without a wetsuit21°CApril average
- 6Naminoue BeachOkinawa · Japan · East China SeaPleasant — swimmable without a wetsuit21°CApril average
- 7Manza BeachOkinawa · Japan · East China SeaPleasant — swimmable without a wetsuit21°CApril average
- 8Mibaru BeachOkinawa · Japan · Pacific OceanPleasant — swimmable without a wetsuit21°CApril average
- 9Furuzamami BeachOkinawa · Japan · Pacific OceanPleasant — swimmable without a wetsuit21°CApril average
- 10Shirahama BeachWakayama · Japan · Pacific OceanPleasant — swimmable without a wetsuit21°CApril average
- 11Katsurahama BeachKochi · Japan · Pacific OceanPleasant — swimmable without a wetsuit21°CApril average
- 12Nigishima BeachMie · Japan · Pacific OceanPleasant — swimmable without a wetsuit21°CApril average
- 13Ibusuki BeachKagoshima · Japan · Pacific OceanPleasant — swimmable without a wetsuit21°CApril average
- 14Aoshima BeachMiyazaki · Japan · Pacific OceanPleasant — swimmable without a wetsuit21°CApril average
- 15Suma BeachHyogo · Japan · Pacific OceanPleasant — swimmable without a wetsuit21°CApril average
- 16Shirahama Beach IzuShizuoka · Japan · Pacific OceanPleasant — swimmable without a wetsuit21°CApril average
- 17Yuigahama BeachKanagawa · Japan · Pacific OceanMild — fine for a swim, cool at first20°CApril average
- 18Zushi BeachKanagawa · Japan · Pacific OceanMild — fine for a swim, cool at first20°CApril average
- 19Enoshima BeachKanagawa · Japan · Pacific OceanMild — fine for a swim, cool at first20°CApril average
- 20Kabira BayOkinawa · Japan · Pacific OceanMild — fine for a swim, cool at first20°CApril average
- 21Kujukuri BeachChiba · Japan · Pacific OceanCool — shorty wetsuit recommended15°CApril average
- 22Onjuku BeachChiba · Japan · Pacific OceanCool — shorty wetsuit recommended15°CApril average
- 23Onjuku BeachChiba · Japan · Pacific OceanCool — shorty wetsuit recommended15°CApril average
Warmest sea in April elsewhere
Japan in April — frequently asked questions
- Where is the sea warmest in Japan in April?
- Nishihama Beach in Japan has the warmest sea in Japan in April, averaging about 28.0 °C. Sunayama Beach (28.0 °C) and Kondoi Beach follow close behind.
- How many beaches in Japan are warm enough to swim in April?
- 4 of the top 23 ranked beaches in Japan average 22 °C or more in April, which most swimmers find comfortable without a wetsuit.
- 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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