Koh Samui in September
Koh Samui in September
Koh Samui, Thailand
Visiting Koh Samui in September means experiencing the wet season. As a tropical destination, expect warm temperatures year-round with higher rainfall and humidity.
Weather in Koh Samui in September
Average highs around 27.6C and lows near 23C. 130.7mm average precipitation and about 21 rainy days. September typically sits between August and October conditions, so it is useful for travelers wanting a balanced window in Koh Samui. Pack quick-dry clothing and a light waterproof layer for September.
Temperature
September brings wet season conditions in Koh Samui, Thailand. The average temperature is about 25.3C, with lows near 23C and highs around 27.6C.
Sunshine Hours
Koh Samui, Thailand usually gets around 8.9 hours of sunshine per day in September, with roughly 12.2 daylight hours available for sightseeing.
Rain
September sees around 130.7mm of rainfall over about 21 days. Rain can occur for around 8.6 hours per day on average.
