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Warmest sea in Japan in February

373 coastal locations in Japan ranked by their typical February sea temperature. Region-wide average in February: 12.8°C. The top of the list is where to find the warmest swimming this month.

Warmest in February

Minami-Tori Shima

24.2°C February mean in Japan

Regional February average

12.8°C

across all 373 coastal locations in Japan

Vs annual mean

-6.3°C

below the year-round regional average

What the Japan sea feels like in February

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

Japan monthly average 12.8°C to 26.6°C
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F
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  • Warmest month August 26.6°C
  • Coldest month February 12.8°C
  • Annual mean 19.1°C
  • Months above 20°C 5 of 12

Where February fits in the year

February sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Japan month rankings:

Japan sea temperature map (live)

The map shows today's latest reading at every Japan location. The list below is based on the typical February mean, useful for trip planning weeks or months ahead.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest Japan locations in February

Sorted by the typical February mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location February mean
1 Minami-Tori Shima Tokyo 24.2°C
2 Yonakuni 24.1°C
3 Yonakuni Shima Okinawa 24.1°C
4 Funauke Okinawa 23.5°C
5 Kobi Sho Okinawa 23.5°C
6 Ishigaki 23.2°C
7 Miyakojima 22.9°C
8 Hirara Okinawa 22.8°C
9 lo Shima Tokyo 22.8°C
10 Minami-Daito Shima Okinawa 22.3°C
11 Tsuhako Okinawa 21.9°C
12 Kanegusuku Okinawa 21.9°C
13 Naha Ko Okinawa 21.9°C
14 Kerama Kaikyo (Zamami) Okinawa 21.9°C
15 Haebaru 21.7°C
16 Itoman 21.7°C
17 Okinawa 21.7°C
18 Tomigusuku 21.7°C
19 Suku Okinawa 21.6°C
20 Chatan 21.6°C
21 Gushikawa 21.6°C
22 Nago 21.5°C
23 Nakano Shima Kagoshima 21.5°C
24 Wadomari Kagoshima 21.4°C
25 Toguchi Okinawa 21.4°C
Show 25 more ▸
26 Takara Shima Kagoshima 21.4°C
27 Gakiya Okinawa 21.4°C
28 Amami 21.3°C
29 Haha Shima Tokyo 21.2°C
30 Sanmura Wan Kagoshima 21.1°C
31 Koniya Kagoshima 21.1°C
32 Kasari Wan Kagoshima 21.1°C
33 Uken Kagoshima 21.0°C
34 Chichi Shima Tokyo 20.9°C
35 Ogasawara 20.8°C
36 Kuchi-No-Erabu Shima Kagoshima 20.6°C
37 Isso Kagoshima 20.0°C
38 Kumano Kagoshima 19.9°C
39 Hachijo Jima Tokyo 19.7°C
40 Tori Shima Tokyo 19.6°C
41 Yakushima 19.6°C
42 Nishinoomote 18.9°C
43 Miyake Shima Tokyo 18.9°C
44 Uchiumi Miyazaki 18.9°C
45 Miyazaki Shi 18.8°C
46 Aburatsu Miyazaki 18.8°C
47 Kozu Sima Tokyo 18.8°C
48 Makurazaki 18.7°C
49 Shibushi 18.6°C
50 Saiki 18.6°C

Coldest 10 in Japan in February

Same data the other way. Helpful if you want to know which Japan coasts to avoid for swimming in February.

# Location February mean
1 Hojo -1.3°C
2 Abashiri Ko Hokkaido -1.2°C
3 Mombetsu -1.2°C
4 Koiseboi Hokkaido -1.1°C
5 Monbetsu Hokkaido -1.1°C
6 Shibetsu -1.1°C
7 Omu Ko Hokkaido -1.0°C
8 Esashi (Hokkaido Ne Coast) Hokkaido -0.8°C
9 Tomari Wan Hokkaido -0.4°C
10 Furukamappu Wan Hokkaido -0.3°C

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