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 | Average Sea temperature | Our opinion |
|---|---|---|
| January | 82°F to 83°F | ideal swimming |
| February | 83°F to 83°F | ideal swimming |
| March | 84°F to 84°F | ideal swimming |
| April | 86°F to 86°F | ideal swimming |
| May | 86°F to 87°F | ideal swimming |
| June | 86°F to 86°F | ideal swimming |
| July | 86°F to 86°F | ideal swimming |
| August | 85°F to 85°F | ideal swimming |
| September | 85°F to 85°F | ideal swimming |
| October | 85°F to 85°F | ideal swimming |
| November | 85°F to 85°F | ideal swimming |
| December | 83°F to 83°F | ideal swimming |
Where and when should you swim on the island of Koh Samui?
Best time to swim in Bang Kao (Laem Sor beach)
It is possible to swim all year in Bang Kao (Laem Sor beach).
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.