Koh Samui Monthly Climate Averages

To help you choose the best time to travel, you can find climate data below on the weather on Koh Samui .


Month	t°C day	t°C night	mm rain	daylight

January	+29	+24.2	86	12h
February	+29.4	+25	54	12.2h
March	+30.6	+25.6	81	12.4h
April	+32	+26.1	83	12.7h
May	+32.6	+25.7	156	12.9h
June	+32.5	+25.5	124	13.1h
July	+32.2	+25.1	116	13h
August	+32.1	+25.2	111	12.8h
September	+31.7	+24.8	122	12.5h
October	+30.5	+24.3	310	12.3h
November	+29.6	+24.1	507	12.1h
December	+29.2	+23.9	210	12h

Best places

High season with the best weather conditions for the beach leisure on Koh Samui are typically January, February.

Temperature on Koh Samui

The table shows that the hottest months on Koh Samui are May and June, during which the average daytime temperature reaches +32.6°C and the nighttime temperature falls to +25.7°C.

The coldest months are January and December, when the daily average temperature falls to +29°C, and drops to +24.2°C during the night.

Most booked hotels on Koh Samui

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