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

Do you want to go to the seaside on the island of Koh Samui? But when should you go to be sure to enjoy good sea water temperature and be able to swim for a long time? Now or another month during the year? On this page, find the sea temperature by month on the island of Koh Samui.

Swimming on the island of Koh Samui by month

Discover swimming conditions in detail on the island of Koh Samui by month below. Click on the links for each month to see details about the sea temperature in the cities of: Chaweng Beach, Bang Kao (Laem Sor beach), Bophut, Choeng Mon and Koh Madsum.

Month Sea temperature
January 82°F to 83°F
February 83°F to 83°F
March 84°F to 84°F
April 86°F to 86°F
May 86°F to 87°F
June 86°F to 86°F
July 86°F to 86°F
August 85°F to 85°F
September 85°F to 85°F
October 85°F to 85°F
November 85°F to 85°F
December 83°F to 83°F

Where and when should you swim on the island of Koh Samui?

Chaweng Beach

Best time to swim in Chaweng Beach

It is possible to swim all year in Chaweng Beach.

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Bang Kao (Laem Sor beach)

Best time to swim in Bang Kao (Laem Sor beach)

It is possible to swim all year in Bang Kao (Laem Sor beach).

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Bophut

Best time to swim in Bophut

It is possible to swim all year in Bophut.

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Choeng Mon

Best time to swim in Choeng Mon

It is possible to swim all year in Choeng Mon.

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Koh Madsum

Best time to swim in Koh Madsum

It is possible to swim all year in Koh Madsum.

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Other cities and places on the island of Koh Samui:

Water temperatures on the island of Koh Samui over the entire year

On this chart, we show you the variation of the average sea water temperature on the island of Koh Samui for the cities of: Chaweng Beach, Bang Kao (Laem Sor beach), Bophut, Choeng Mon and Koh Madsum.

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