Swimming in Japan in november 2025 Sea temperature by city in november

In november in Japan swimming conditions vary by city. Details below:

In november in Ishigaki-jima and Yonaguni-jima, swimming conditions are perfect! With water reaching a maximum of 85°F and an average of 81°F, going in the water (and staying there!) feels great.

As for Fukuoka, Kochi, Okinawa, Kagoshima (Kyushu), Nagasaki, Nago, Naha, Takamatsu, Tokushima, Aguni-jima, Goto islands, Higashi, Iheya-jima, Ise, Itoman, Izenajima, Kamakura, Kumano Kodo, Miyagi Island, Muroto, Tanega-shima, Tosashimizu, Yakushima, Yokohama, Yoron-jima, Beppu/Ōita, Karatsu, Kimitsu, Matsuyama, Minamata, Miyazaki, Nichinan, Niihama, Nobeoka, Saiki, Sasebo, Shibushi Bay, Shingu, Tamano, Tateyama, Uwajima and Wakayama, swimming is pleasant in november. The sea water is 71°F on average (min: 67°F/max: 74°F) so you can easily spend time in the water.

Swimming in november in Tokyo, Hiroshima, Nagoya, Osaka, Akita, Hakone, Izumo, Kanazawa, Kobe, Okayama, Izu, Kitakyushu, Kure, Miyajima, Niigata, Sado island, Tottori, Wajima, Asahi, Chiba, Fuji, Hamada, Hamamatsu, Hikari, Hitachi-Naka, Iwaki, Joetsu, Kurayoshi, Maizuru, Masuda, Nagaoka, Nanao, Noshiro, Shizuoka, Toyama and Ube is possible but the sea is generally cool. So though the sea temperature may sometimes reach 73°F, it can also go as low as 65°F. Note that the average is 69°F.

Swimming in november in Aomori, Sendai (Honshu), Hachinohe, Ishinomaki, Kamaishi, Miyako, Mutsu and Sakata is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 60°F (min: 56°F/max: 65°F).

Forget about swimming in Sapporo (Hokkaido), Abashiri, Hakodate, Monbetsu, Shiretoko National Park, Kushiro, Muroran, Nemuro, Otaru, Tomakomai and Wakkanai in november! The water temperature is freezing, reaching as low as 50°F (and only 60°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!