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

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

In june in Okinawa, Nago, Naha, Aguni-jima, Higashi, Iheya-jima, Ishigaki-jima, Itoman, Izenajima, Miyagi Island, Yonaguni-jima and Yoron-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, Hiroshima, Kochi, Nagoya, Osaka, Hakone, Izumo, Kagoshima (Kyushu), Kobe, Nagasaki, Okayama, Takamatsu, Tokushima, Goto islands, Ise, Izu, Kamakura, Kitakyushu, Kumano Kodo, Kure, Miyajima, Muroto, Tanega-shima, Tosashimizu, Tottori, Yakushima, Yokohama, Asahi, Beppu/Ōita, Fuji, Hamamatsu, Karatsu, Kimitsu, Kurayoshi, Maizuru, Matsuyama, Minamata, Miyazaki, Nichinan, Niihama, Nobeoka, Saiki, Sasebo, Shibushi Bay, Shingu, Shizuoka, Tamano, Tateyama, Uwajima and Wakayama, swimming is pleasant in june. The sea water is 72°F on average (min: 68°F/max: 76°F) so you can easily spend time in the water.

Swimming in june in Tokyo, Akita, Kanazawa, Sendai (Honshu), Niigata, Sado island, Wajima, Chiba, Hamada, Hikari, Hitachi-Naka, Ishinomaki, Iwaki, Joetsu, Masuda, Nagaoka, Nanao, Noshiro, Sakata, Toyama and Ube is possible but the sea is generally cool. So though the sea temperature may sometimes reach 74°F, it can also go as low as 66°F. Note that the average is 70°F.

Swimming in june in Aomori, Kamaishi, Miyako and Mutsu is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 61°F (min: 56°F/max: 67°F).

Forget about swimming in Sapporo (Hokkaido), Abashiri, Hakodate, Monbetsu, Shiretoko National Park, Hachinohe, Kushiro, Muroran, Nemuro, Otaru, Tomakomai and Wakkanai in june! The water temperature is freezing, reaching as low as 54°F (and only 66°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!