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

In September, Ko Samui averages 32°C high / 25°C low with about 141 mm of rain; Langkawi averages 31°C high / 25°C low with about 244 mm.

Ko Samui vs Langkawi in September

Ko Samui is the better pick in September — 73 vs 67 on SeasonMap's comfort score. Ko Samui is sweltering, rainy, clean air, while Langkawi is sweltering, soaked, clean air.

Ko Samui vs Langkawi — September climate, side by side

	Ko Samui	Langkawi
Comfort score	73/100 (B)	67/100 (C)
Feels-like high	37°C	37°C
Avg high / low	32° / 25°	31° / 25°
Rainfall	141 mm	244 mm
Rainy days	22	24
Humidity	79%	83%
Air quality (AQI)	27	40

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

Ko Samui vs Langkawi in September — FAQ

Is September better in Ko Samui or Langkawi?: Ko Samui is the better pick in September — 73 vs 67 on SeasonMap's comfort score. Ko Samui is sweltering, rainy, clean air, while Langkawi is sweltering, soaked, clean air.
What is the weather like in Ko Samui vs Langkawi in September?: In September, Ko Samui averages 32°C high / 25°C low with about 141 mm of rain; Langkawi averages 31°C high / 25°C low with about 244 mm.