Best time to swim in Cardiff in Wales Sea temperature by month

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

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

Do you feel like swimming in Cardiff in Wales? 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 49°F (min: 46°F/max: 52°F)
February 49°F (min: 46°F/max: 51°F)
March 48°F (min: 46°F/max: 50°F)
April 50°F (min: 48°F/max: 53°F)
May 53°F (min: 51°F/max: 55°F)
June 57°F (min: 54°F/max: 60°F)
July 61°F (min: 58°F/max: 63°F)
August 63°F (min: 61°F/max: 64°F)
September 62°F (min: 61°F/max: 64°F)
October 60°F (min: 58°F/max: 62°F)
November 57°F (min: 55°F/max: 59°F)
December 53°F (min: 51°F/max: 56°F)

Water temperature variation in Cardiff throughout the year

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