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

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

In july in Kochi, Okinawa, Osaka, Kagoshima (Kyushu), Kobe, Nago, Naha, Takamatsu, Tokushima, Aguni-jima, Goto islands, Higashi, Iheya-jima, Ise, Ishigaki-jima, Itoman, Izenajima, Kumano Kodo, Miyagi Island, Muroto, Tanega-shima, Tosashimizu, Yakushima, Yonaguni-jima, Yoron-jima, Minamata, Miyazaki, Nichinan, Niihama, Nobeoka, Saiki, Shibushi Bay, Shingu, Uwajima and Wakayama, swimming conditions are perfect! With water reaching a maximum of 84°F and an average of 81°F, going in the water (and staying there!) feels great.

As for Tokyo, Fukuoka, Hiroshima, Nagoya, Akita, Hakone, Izumo, Kanazawa, Nagasaki, Okayama, Sendai (Honshu), Izu, Kamakura, Kitakyushu, Kure, Miyajima, Niigata, Sado island, Tottori, Wajima, Yokohama, Asahi, Beppu/Ōita, Chiba, Fuji, Hamada, Hamamatsu, Hikari, Hitachi-Naka, Iwaki, Joetsu, Karatsu, Kimitsu, Kurayoshi, Maizuru, Masuda, Matsuyama, Nagaoka, Nanao, Noshiro, Sakata, Sasebo, Shizuoka, Tamano, Tateyama, Toyama and Ube, swimming is pleasant in july. The sea water is 76°F on average (min: 73°F/max: 79°F) so you can easily spend time in the water.

Swimming in july in Sapporo (Hokkaido), Aomori, Hakodate, Hachinohe, Ishinomaki, Kamaishi, Miyako, Muroran, Mutsu, Otaru and Tomakomai is possible but the sea is generally cool. So though the sea temperature may sometimes reach 70°F, it can also go as low as 62°F. Note that the average is 66°F.

Swimming in july in Monbetsu, Kushiro and Wakkanai is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 61°F (min: 55°F/max: 67°F).

Forget about swimming in Abashiri, Shiretoko National Park and Nemuro in july! The water temperature is freezing, reaching as low as 54°F (and only 63°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!