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Coldest sea in Japan in July

373 coastal locations in Japan ranked by typical July sea temperature, coldest first. Region-wide average in July: 24.4°C.

Coldest in July

Moyoro Wan

9.0°C July mean in Japan

Regional July average

24.4°C

across all 373 coastal locations in Japan

Vs annual mean

+5.3°C

above the year-round regional average

What the Japan sea feels like in July

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 July fits in the year

July 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 July 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 July

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

# Location July mean
1 Moyoro Wan Hokkaido 9.0°C
2 Hitokappi Wan Hokkaido 10.5°C
3 Shibetoro Hokkaido 10.8°C
4 Shana Wan Hokkaido 11.7°C
5 Naibo Wan Hokkaido 11.8°C
6 Mikuni 13.9°C
7 Muta 13.9°C
8 Hanasaki Hokkaido 14.1°C
9 Nemuro Ko Hokkaido 14.1°C
10 Furukamappu Wan Hokkaido 14.7°C
11 Kiritappu Hokkaido 15.5°C
12 Tomari Wan Hokkaido 15.5°C
13 Akkeshi Hokkaido 15.5°C
14 Mombetsu 15.6°C
15 Shibetsu 15.7°C
16 Hokkaido 15.8°C
17 Kushiro 16.1°C
18 Shizunai 16.1°C
19 Esashi (Hokkaido Ne Coast) Hokkaido 16.2°C
20 Koiseboi Hokkaido 16.2°C
21 Rubeshibetsu Hokkaido 16.3°C
22 Soya Misaki Hokkaido 16.3°C
23 Omu Ko Hokkaido 16.4°C
24 Wakkanai 16.5°C
25 Monbetsu Hokkaido 16.6°C
Show 25 more ▸
26 Abashiri Ko Hokkaido 16.8°C
27 Erimo Misaki Hokkaido 17.3°C
28 Urakawa Hokkaido 17.9°C
29 Hojo 18.2°C
30 Tomakomai 18.2°C
31 Oshidomari Wan Hokkaido 18.3°C
32 Noboribetsu 18.5°C
33 Hachinohe 18.8°C
34 Hakodate 19.0°C
35 Shiriya Aomori 19.2°C
36 Tomari Aomori 19.2°C
37 Usujiri Hokkaido 19.4°C
38 Kuji Iwate 19.4°C
39 Muroran Hokkaidō 19.5°C
40 Otaru 19.5°C
41 Usu Wan Hokkaido 19.5°C
42 Yoichi 19.5°C
43 Mori Ko Hokkaido 19.6°C
44 Ishikari 19.6°C
45 Sapporo 19.6°C
46 Miyako 19.7°C
47 Tomamae Hokkaido 19.9°C
48 Oma Aomori 19.9°C
49 Shiokubi Misaki Hokkaido 19.9°C
50 Ohata Aomori 20.0°C

Warmest 10 in Japan in July

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

# Location July mean
1 Fuji 30.4°C
2 lo Shima Tokyo 29.6°C
3 Yonakuni Shima Okinawa 29.6°C
4 Funauke Okinawa 29.6°C
5 Yonakuni 29.5°C
6 Ishigaki 29.5°C
7 Hirara Okinawa 29.4°C
8 Minami-Tori Shima Tokyo 29.4°C
9 Miyakojima 29.4°C
10 Kanegusuku Okinawa 29.4°C

More on this region