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

Do you want to go to the beach in Japan in january 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in january in Japan by city and our opinion on the chances of enjoying pleasant sea conditions.

Sea temperature in Japan in january 2025

Here, find the average sea temperature in Japan in january in several coastal cities.

Kantō in january

on average:

60°F

min: 57°F / max: 64°F

on average:

62°F

min: 57°F / max: 67°F

Kamakura

on average:

63°F

min: 58°F / max: 68°F

on average:

63°F

min: 58°F / max: 68°F

Asahi

on average:

62°F

min: 56°F / max: 67°F

Chiba

on average:

61°F

min: 57°F / max: 65°F

Kyushu in january

on average:

61°F

min: 57°F / max: 65°F

on average:

67°F

min: 64°F / max: 69°F

on average:

63°F

min: 58°F / max: 66°F

Goto islands

on average:

63°F

min: 59°F / max: 67°F

Kitakyushu

on average:

61°F

min: 57°F / max: 65°F

Tanega-shima

on average:

68°F

min: 66°F / max: 71°F

Chūgoku in january

on average:

58°F

min: 55°F / max: 62°F

on average:

60°F

min: 56°F / max: 63°F

on average:

59°F

min: 55°F / max: 62°F

on average:

59°F

min: 55°F / max: 62°F

on average:

58°F

min: 55°F / max: 62°F

Tottori

on average:

56°F

min: 53°F / max: 61°F

Shikoku in january

on average:

64°F

min: 60°F / max: 67°F

on average:

61°F

min: 59°F / max: 64°F

on average:

62°F

min: 58°F / max: 65°F

Muroto

on average:

64°F

min: 61°F / max: 67°F

Tosashimizu

on average:

64°F

min: 61°F / max: 67°F

Matsuyama

on average:

61°F

min: 58°F / max: 64°F

Chūbu in january

on average:

59°F

min: 55°F / max: 63°F

on average:

56°F

min: 53°F / max: 60°F

Izu

on average:

61°F

min: 56°F / max: 66°F

Niigata

on average:

54°F

min: 50°F / max: 58°F

Sado island

on average:

54°F

min: 51°F / max: 57°F

Wajima

on average:

56°F

min: 52°F / max: 59°F

Okinawa in january

on average:

73°F

min: 69°F / max: 76°F

on average:

72°F

min: 68°F / max: 76°F

on average:

73°F

min: 69°F / max: 76°F

Aguni-jima

on average:

72°F

min: 69°F / max: 76°F

Higashi

on average:

72°F

min: 68°F / max: 76°F

Iheya-jima

on average:

72°F

min: 68°F / max: 76°F

Kansai in january

on average:

59°F

min: 56°F / max: 63°F

on average:

59°F

min: 56°F / max: 63°F

Ise

on average:

62°F

min: 57°F / max: 66°F

Kumano Kodo

on average:

64°F

min: 62°F / max: 67°F

Maizuru

on average:

57°F

min: 54°F / max: 61°F

Shingu

on average:

62°F

min: 58°F / max: 66°F

Hokkaidō in january

on average:

44°F

min: 40°F / max: 48°F

on average:

34°F

min: 30°F / max: 38°F

on average:

46°F

min: 40°F / max: 51°F

Monbetsu

on average:

32°F

min: 30°F / max: 35°F

Shiretoko National Park

on average:

34°F

min: 29°F / max: 38°F

Kushiro

on average:

37°F

min: 32°F / max: 41°F

Tōhoku in january

on average:

52°F

min: 48°F / max: 56°F

on average:

50°F

min: 47°F / max: 54°F

on average:

53°F

min: 48°F / max: 58°F

Hachinohe

on average:

49°F

min: 45°F / max: 53°F

Ishinomaki

on average:

52°F

min: 47°F / max: 58°F

Iwaki

on average:

57°F

min: 51°F / max: 63°F

Where should you go swimming in Japan in the month of january?

Swimming in Japan in january is pleasant (in the best case scenario)

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

As for Okinawa, Nago, Naha, Aguni-jima, Higashi, Iheya-jima, Ishigaki-jima, Itoman, Izenajima, Miyagi Island, Yonaguni-jima and Yoron-jima, swimming is pleasant in january. The sea water is 73°F on average (min: 69°F/max: 76°F) so you can easily spend time in the water.

Swimming in january in Kochi, Kagoshima (Kyushu), Goto islands, Kumano Kodo, Muroto, Tanega-shima, Tosashimizu, Yakushima, Yokohama, Minamata, Miyazaki, Nichinan, Nobeoka, Saiki, Shibushi Bay, Tateyama and Uwajima is possible but the sea is generally cool. So though the sea temperature may sometimes reach 67°F, it can also go as low as 60°F. Note that the average is 64°F.

Swimming in january in Tokyo, Fukuoka, Hakone, Izumo, Nagasaki, Takamatsu, Tokushima, Ise, Izu, Kamakura, Kitakyushu, Asahi, Beppu/Ōita, Chiba, Fuji, Hamamatsu, Karatsu, Kimitsu, Matsuyama, Niihama, Sasebo, Shingu, Shizuoka, Tamano and Wakayama is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 60°F (min: 57°F/max: 64°F).

Forget about swimming in Hiroshima, Nagoya, Osaka, Sapporo (Hokkaido), Abashiri, Akita, Aomori, Hakodate, Kanazawa, Kobe, Okayama, Sendai (Honshu), Kure, Miyajima, Monbetsu, Niigata, Sado island, Shiretoko National Park, Tottori, Wajima, Hachinohe, Hamada, Hikari, Hitachi-Naka, Ishinomaki, Iwaki, Joetsu, Kamaishi, Kurayoshi, Kushiro, Maizuru, Masuda, Miyako, Muroran, Mutsu, Nagaoka, Nanao, Nemuro, Noshiro, Otaru, Sakata, Tomakomai, Toyama, Ube and Wakkanai in january! The water temperature is freezing, reaching as low as 55°F (and only 62°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!

Where to go swimming in Japan in january: the map of sea temperatures

ideal swimming pleasant swimming cool swimming cold swimming freezing swimming

Water temperature and seasonal norms in january

Tokyo

January
Average sea temperature 60°F
Minimum sea temperature 57°F
Maximum sea temperature 64°F
Average outside temperature 47°F
Maximum outside temperature 52°F
Minimum outside temperature 41°F
Precipitation 2.2in
Number of days of precipitation 3 jour(s)
(10%)
Cloud cover 28%
Our opinion cold swimming

More information on swimming in Tokyo in january

Fukuoka

January
Average sea temperature 61°F
Minimum sea temperature 57°F
Maximum sea temperature 65°F
Average outside temperature 45°F
Maximum outside temperature 50°F
Minimum outside temperature 41°F
Precipitation 4.4in
Number of days of precipitation 5 jour(s)
(17%)
Cloud cover 53%
Our opinion cold swimming

More information on swimming in Fukuoka in january

Hiroshima

January
Average sea temperature 58°F
Minimum sea temperature 55°F
Maximum sea temperature 62°F
Average outside temperature 41°F
Maximum outside temperature 47°F
Minimum outside temperature 36°F
Precipitation 3.6in
Number of days of precipitation 4 jour(s)
(13%)
Cloud cover 45%
Our opinion freezing swimming

More information on swimming in Hiroshima in january

Kochi

January
Average sea temperature 64°F
Minimum sea temperature 60°F
Maximum sea temperature 67°F
Average outside temperature 47°F
Maximum outside temperature 52°F
Minimum outside temperature 40°F
Precipitation 2.6in
Number of days of precipitation 3 jour(s)
(10%)
Cloud cover 28%
Our opinion cool swimming

More information on swimming in Kochi in january

Nagoya

January
Average sea temperature 59°F
Minimum sea temperature 55°F
Maximum sea temperature 63°F
Average outside temperature 41°F
Maximum outside temperature 47°F
Minimum outside temperature 36°F
Precipitation 2.3in
Number of days of precipitation 3 jour(s)
(11%)
Cloud cover 35%
Our opinion freezing swimming

More information on swimming in Nagoya in january

List of coastal cities in Japan

Tokyo in januarycold swimming
Fukuoka in januarycold swimming
Hiroshima in januaryfreezing swimming
Kochi in januarycool swimming
Nagoya in januaryfreezing swimming
Okinawa in januarypleasant swimming
Osaka in januaryfreezing swimming
Sapporo (Hokkaido) in januaryfreezing swimming
Abashiri in januaryfreezing swimming
Akita in januaryfreezing swimming
Aomori in januaryfreezing swimming
Hakodate in januaryfreezing swimming
Hakone in januarycold swimming
Izumo in januarycold swimming
Kagoshima (Kyushu) in januarycool swimming
Kanazawa in januaryfreezing swimming
Kobe in januaryfreezing swimming
Nagasaki in januarycold swimming
Nago in januarypleasant swimming
Naha in januarypleasant swimming
Okayama in januaryfreezing swimming
Sendai (Honshu) in januaryfreezing swimming
Takamatsu in januarycold swimming
Tokushima in januarycold swimming
Aguni-jima in januarypleasant swimming
Goto islands in januarycool swimming
Higashi in januarypleasant swimming
Iheya-jima in januarypleasant swimming
Ise in januarycold swimming
Ishigaki-jima in januarypleasant swimming
Itoman in januarypleasant swimming
Izenajima in januarypleasant swimming
Izu in januarycold swimming
Kamakura in januarycold swimming
Kitakyushu in januarycold swimming
Kumano Kodo in januarycool swimming
Kure in januaryfreezing swimming
Miyagi Island in januarypleasant swimming
Miyajima in januaryfreezing swimming
Monbetsu in januaryfreezing swimming
Muroto in januarycool swimming
Niigata in januaryfreezing swimming
Sado island in januaryfreezing swimming
Shiretoko National Park in januaryfreezing swimming
Tanega-shima in januarycool swimming
Tosashimizu in januarycool swimming
Tottori in januaryfreezing swimming
Wajima in januaryfreezing swimming
Yakushima in januarycool swimming
Yokohama in januarycool swimming
Yonaguni-jima in januarypleasant swimming
Yoron-jima in januarypleasant swimming
Asahi in januarycold swimming
Beppu/Ōita in januarycold swimming
Chiba in januarycold swimming
Fuji in januarycold swimming
Hachinohe in januaryfreezing swimming
Hamada in januaryfreezing swimming
Hamamatsu in januarycold swimming
Hikari in januaryfreezing swimming
Hitachi-Naka in januaryfreezing swimming
Ishinomaki in januaryfreezing swimming
Iwaki in januaryfreezing swimming
Joetsu in januaryfreezing swimming
Kamaishi in januaryfreezing swimming
Karatsu in januarycold swimming
Kimitsu in januarycold swimming
Kurayoshi in januaryfreezing swimming
Kushiro in januaryfreezing swimming
Maizuru in januaryfreezing swimming
Masuda in januaryfreezing swimming
Matsuyama in januarycold swimming
Minamata in januarycool swimming
Miyako in januaryfreezing swimming
Miyazaki in januarycool swimming
Muroran in januaryfreezing swimming
Mutsu in januaryfreezing swimming
Nagaoka in januaryfreezing swimming
Nanao in januaryfreezing swimming
Nemuro in januaryfreezing swimming
Nichinan in januarycool swimming
Niihama in januarycold swimming
Nobeoka in januarycool swimming
Noshiro in januaryfreezing swimming
Otaru in januaryfreezing swimming
Saiki in januarycool swimming
Sakata in januaryfreezing swimming
Sasebo in januarycold swimming
Shibushi Bay in januarycool swimming
Shingu in januarycold swimming
Shizuoka in januarycold swimming
Tamano in januarycold swimming
Tateyama in januarycool swimming
Tomakomai in januaryfreezing swimming
Toyama in januaryfreezing swimming
Ube in januaryfreezing swimming
Uwajima in januarycool swimming
Wakayama in januarycold swimming
Wakkanai in januaryfreezing swimming
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