Best time to swim in Cape Cod National Seashore in the United States (USA) Sea temperature by month

Do you want to swim in the sea in Cape Cod National Seashore in the United States (USA)? But when is the best time to go to be sure to have pleasant water for swimming in Cape Cod National Seashore 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 Cape Cod National Seashore, based on the average temperatures recorded in previous years.

Best time to swim in Cape Cod National Seashore: the water temperature by month

Do you feel like swimming in Cape Cod National Seashore in the United States (USA)? 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 42°F (min: 39°F/max: 45°F)
February 39°F (min: 37°F/max: 42°F)
March 40°F (min: 36°F/max: 42°F)
April 44°F (min: 40°F/max: 48°F)
May 50°F (min: 44°F/max: 55°F)
June 58°F (min: 51°F/max: 65°F)
July 66°F (min: 61°F/max: 72°F)
August 68°F (min: 66°F/max: 71°F)
September 65°F (min: 61°F/max: 68°F)
October 59°F (min: 53°F/max: 65°F)
November 52°F (min: 49°F/max: 55°F)
December 47°F (min: 42°F/max: 51°F)

Water temperature variation in Cape Cod National Seashore throughout the year

Change units