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Coldest sea in Japan in June

373 coastal locations in Japan ranked by typical June sea temperature, coldest first. Region-wide average in June: 20.8°C.

Coldest in June

Moyoro Wan

5.7°C June mean in Japan

Regional June average

20.8°C

across all 373 coastal locations in Japan

Vs annual mean

+1.7°C

above the year-round regional average

What the Japan sea feels like in June

Water at this temperature is very pleasant to swim in. If you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

Japan monthly average 12.8°C to 26.6°C
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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 June fits in the year

June 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 June mean.

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 coldest Japan locations in June

Sorted by typical June mean from a decade of daily readings, coldest first. Click any place for the full location page.

# Location June mean
1 Moyoro Wan Hokkaido 5.7°C
2 Shibetoro Hokkaido 6.4°C
3 Hitokappi Wan Hokkaido 6.8°C
4 Naibo Wan Hokkaido 7.2°C
5 Shana Wan Hokkaido 7.3°C
6 Hanasaki Hokkaido 9.7°C
7 Nemuro Ko Hokkaido 9.7°C
8 Furukamappu Wan Hokkaido 9.9°C
9 Mombetsu 10.5°C
10 Kiritappu Hokkaido 10.6°C
11 Akkeshi Hokkaido 10.7°C
12 Tomari Wan Hokkaido 10.8°C
13 Soya Misaki Hokkaido 10.8°C
14 Shibetsu 10.9°C
15 Hokkaido 11.0°C
16 Koiseboi Hokkaido 11.0°C
17 Kushiro 11.2°C
18 Esashi (Hokkaido Ne Coast) Hokkaido 11.3°C
19 Shizunai 11.3°C
20 Rubeshibetsu Hokkaido 11.4°C
21 Omu Ko Hokkaido 11.5°C
22 Monbetsu Hokkaido 11.6°C
23 Abashiri Ko Hokkaido 11.6°C
24 Wakkanai 11.7°C
25 Erimo Misaki Hokkaido 12.9°C
Show 25 more ▸
26 Mikuni 12.9°C
27 Muta 12.9°C
28 Oshidomari Wan Hokkaido 13.2°C
29 Urakawa Hokkaido 13.2°C
30 Hojo 13.3°C
31 Tomakomai 13.4°C
32 Noboribetsu 13.8°C
33 Hakodate 14.4°C
34 Shiriya Aomori 14.4°C
35 Tomari Aomori 14.4°C
36 Usujiri Hokkaido 14.6°C
37 Hachinohe 14.8°C
38 Tomamae Hokkaido 14.8°C
39 Muroran Hokkaidō 14.8°C
40 Usu Wan Hokkaido 14.8°C
41 Mori Ko Hokkaido 14.8°C
42 Oma Aomori 14.9°C
43 Otaru 14.9°C
44 Shiokubi Misaki Hokkaido 14.9°C
45 Yoichi 14.9°C
46 Kuji Iwate 15.1°C
47 Ishikari 15.2°C
48 Sapporo 15.2°C
49 Ohata Aomori 15.2°C
50 Kamui Misaki Hokkaido 15.2°C

Warmest 10 in Japan in June

Same data the other way. The warmest spots for the same month.

# Location June mean
1 Fuji 29.1°C
2 Yonakuni Shima Okinawa 29.1°C
3 lo Shima Tokyo 28.9°C
4 Yonakuni 28.9°C
5 Funauke Okinawa 28.8°C
6 Minami-Tori Shima Tokyo 28.7°C
7 Ishigaki 28.5°C
8 Kobi Sho Okinawa 28.3°C
9 Hirara Okinawa 28.2°C
10 Miyakojima 28.2°C

More on this region