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

In September, Ko Samui averages 32°C high / 25°C low with about 141 mm of rain; Penang averages 30°C high / 24°C low with about 237 mm.

Ko Samui vs Penang in September

Ko Samui is the better pick in September — 73 vs 68 on SeasonMap's comfort score. Ko Samui is sweltering, rainy, clean air, while Penang is sweltering, soaked, muggy air.

Ko Samui vs Penang — September climate, side by side

	Ko Samui	Penang
Comfort score	73/100 (B)	68/100 (C)
Feels-like high	37°C	36°C
Avg high / low	32° / 25°	30° / 24°
Rainfall	141 mm	237 mm
Rainy days	22	26
Humidity	79%	83%
Air quality (AQI)	27	63

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

Ko Samui vs Penang in September — FAQ

Is September better in Ko Samui or Penang?: Ko Samui is the better pick in September — 73 vs 68 on SeasonMap's comfort score. Ko Samui is sweltering, rainy, clean air, while Penang is sweltering, soaked, muggy air.
What is the weather like in Ko Samui vs Penang in September?: In September, Ko Samui averages 32°C high / 25°C low with about 141 mm of rain; Penang averages 30°C high / 24°C low with about 237 mm.