Best time to swim in Koh Madsum on the island of Koh Samui Sea temperature by month

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

Best time to swim in Koh Madsum: the water temperature by month

Do you feel like swimming in Koh Madsum on the island of Koh Samui? Discover the average sea temperature for each month of the year (based on previous years' records) and our opinion on swimming in the table below.

Month Sea temperature
January 82°F (min: 81°F/max: 84°F)
February 83°F (min: 82°F/max: 84°F)
March 84°F (min: 82°F/max: 86°F)
April 86°F (min: 83°F/max: 89°F)
May 86°F (min: 85°F/max: 89°F)
June 86°F (min: 85°F/max: 88°F)
July 86°F (min: 84°F/max: 87°F)
August 85°F (min: 83°F/max: 87°F)
September 85°F (min: 83°F/max: 86°F)
October 85°F (min: 83°F/max: 87°F)
November 85°F (min: 83°F/max: 87°F)
December 83°F (min: 81°F/max: 86°F)

Water temperature variation in Koh Madsum throughout the year

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