What is the weather like in Ko Lanta vs Ko Samui in September?

In September, Ko Lanta averages 30°C high / 24°C low with about 314 mm of rain; Ko Samui averages 32°C high / 25°C low with about 141 mm.

Ko Lanta vs Ko Samui in September

Ko Samui is the better pick in September — 73 vs 60 on SeasonMap's comfort score. Ko Samui is sweltering, rainy, clean air, while Ko Lanta is sweltering, soaked, clean air.

Ko Lanta vs Ko Samui — September climate, side by side

	Ko Lanta	Ko Samui
Comfort score	60/100 (C)	73/100 (B)
Feels-like high	35°C	37°C
Avg high / low	30° / 24°	32° / 25°
Rainfall	314 mm	141 mm
Rainy days	26	22
Humidity	84%	79%
Air quality (AQI)	30	27

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Ko Lanta vs Ko Samui in September — FAQ

Is September better in Ko Lanta or Ko Samui?: Ko Samui is the better pick in September — 73 vs 60 on SeasonMap's comfort score. Ko Samui is sweltering, rainy, clean air, while Ko Lanta is sweltering, soaked, clean air.
What is the weather like in Ko Lanta vs Ko Samui in September?: In September, Ko Lanta averages 30°C high / 24°C low with about 314 mm of rain; Ko Samui averages 32°C high / 25°C low with about 141 mm.