Best time to swim in Muroran in Japan Sea temperature by month

Do you want to swim in the sea in Muroran in Japan? But when is the best time to go to be sure to have pleasant water for swimming in Muroran and be able to swim without catching cold? This month, or a different one? The answer is on this page, with the sea water temperature by month in Muroran, based on the average temperatures recorded in previous years.

Best time to swim in Muroran: the water temperature by month

Do you feel like swimming in Muroran in Japan? Discover the average sea temperature for each month of the year (based on previous years' records) and our opinion on swimming in the table below.

Month Sea temperature
January 43°F (min: 37°F/max: 49°F)
February 39°F (min: 36°F/max: 42°F)
March 39°F (min: 36°F/max: 41°F)
April 43°F (min: 39°F/max: 47°F)
May 48°F (min: 41°F/max: 55°F)
June 59°F (min: 50°F/max: 67°F)
July 66°F (min: 60°F/max: 72°F)
August 71°F (min: 68°F/max: 74°F)
September 69°F (min: 64°F/max: 74°F)
October 61°F (min: 57°F/max: 66°F)
November 55°F (min: 50°F/max: 59°F)
December 48°F (min: 41°F/max: 54°F)

Water temperature variation in Muroran throughout the year

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