Best time to swim in Half Moon Bay in California Sea temperature by month

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

Best time to swim in Half Moon Bay: the water temperature by month

Do you feel like swimming in Half Moon Bay in California? 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 54°F (min: 50°F/max: 57°F)
February 54°F (min: 51°F/max: 57°F)
March 54°F (min: 51°F/max: 58°F)
April 54°F (min: 51°F/max: 56°F)
May 54°F (min: 50°F/max: 57°F)
June 54°F (min: 50°F/max: 57°F)
July 56°F (min: 53°F/max: 58°F)
August 57°F (min: 55°F/max: 59°F)
September 58°F (min: 56°F/max: 59°F)
October 58°F (min: 55°F/max: 60°F)
November 56°F (min: 54°F/max: 57°F)
December 55°F (min: 53°F/max: 57°F)

Water temperature variation in Half Moon Bay throughout the year

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