What is the weather like in Chiang Mai vs Khao Lak in September?

In September, Chiang Mai averages 33°C high / 24°C low with about 232 mm of rain; Khao Lak averages 31°C high / 24°C low with about 378 mm.

Chiang Mai vs Khao Lak in September

Khao Lak is the better pick in September — 55 vs 49 on SeasonMap's comfort score. Khao Lak is sweltering, soaked, clean air, while Chiang Mai is sweltering, soaked, muggy air.

Chiang Mai vs Khao Lak — September climate, side by side

	Chiang Mai	Khao Lak
Comfort score	49/100 (F)	55/100 (D)
Feels-like high	39°C	36°C
Avg high / low	33° / 24°	31° / 24°
Rainfall	232 mm	378 mm
Rainy days	23	26
Humidity	86%	88%
Air quality (AQI)	53	24

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

Chiang Mai vs Khao Lak in September — FAQ

Is September better in Chiang Mai or Khao Lak?: Khao Lak is the better pick in September — 55 vs 49 on SeasonMap's comfort score. Khao Lak is sweltering, soaked, clean air, while Chiang Mai is sweltering, soaked, muggy air.
What is the weather like in Chiang Mai vs Khao Lak in September?: In September, Chiang Mai averages 33°C high / 24°C low with about 232 mm of rain; Khao Lak averages 31°C high / 24°C low with about 378 mm.