Best time to swim in Dundalk in Ireland Sea temperature by month

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

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

Do you feel like swimming in Dundalk in Ireland? 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 50°F (min: 47°F/max: 52°F)
February 48°F (min: 46°F/max: 50°F)
March 48°F (min: 46°F/max: 49°F)
April 49°F (min: 47°F/max: 50°F)
May 51°F (min: 49°F/max: 52°F)
June 54°F (min: 51°F/max: 58°F)
July 57°F (min: 55°F/max: 60°F)
August 59°F (min: 58°F/max: 60°F)
September 59°F (min: 58°F/max: 60°F)
October 58°F (min: 56°F/max: 59°F)
November 56°F (min: 54°F/max: 57°F)
December 52°F (min: 50°F/max: 55°F)

Water temperature variation in Dundalk throughout the year

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