Best time to swim in Cornwall in England Sea temperature by month

Do you want to swim in the sea in Cornwall in England? But when is the best time to go to be sure to have pleasant water for swimming in Cornwall 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 Cornwall, based on the average temperatures recorded in previous years.

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

Do you feel like swimming in Cornwall in England? Discover the average sea temperature for each month of the year (based on previous years' data) and our opinion on swimming in the table below. For more information on the sea temperature of a specific month, click on the month's name in the table.

Month Sea temperature
January 51°F (min: 49°F/max: 53°F)
February 50°F (min: 49°F/max: 53°F)
March 50°F (min: 48°F/max: 52°F)
April 51°F (min: 49°F/max: 54°F)
May 54°F (min: 52°F/max: 56°F)
June 58°F (min: 54°F/max: 62°F)
July 62°F (min: 57°F/max: 67°F)
August 63°F (min: 61°F/max: 66°F)
September 62°F (min: 59°F/max: 65°F)
October 59°F (min: 57°F/max: 61°F)
November 57°F (min: 55°F/max: 58°F)
December 54°F (min: 52°F/max: 55°F)

Water temperature variation in Cornwall throughout the year

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