What is the weather like in Chiang Mai vs Chiang Rai in September?

In September, Chiang Mai averages 33°C high / 24°C low with about 232 mm of rain; Chiang Rai averages 32°C high / 24°C low with about 272 mm.

Chiang Mai vs Chiang Rai in September

Chiang Mai and Chiang Rai are nearly tied in September — 49 vs 50 on SeasonMap's comfort score. Chiang Mai is sweltering, soaked, muggy air; Chiang Rai is sweltering, soaked, clean air.

Chiang Mai vs Chiang Rai — September climate, side by side

	🇹🇭 Chiang Mai	🇹🇭 Chiang Rai
Comfort score	49/100 (F)	50/100 (D)
Feels-like high	39°C	38°C
Avg high / low	33° / 24°	32° / 24°
Rainfall	232 mm	272 mm
Rainy days	23	24
Humidity	86%	85%
Air quality (AQI)	53	38

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

Month by month

Chiang Mai vs Chiang Rai in September — FAQ

Is September better in Chiang Mai or Chiang Rai?: Chiang Mai and Chiang Rai are nearly tied in September — 49 vs 50 on SeasonMap's comfort score. Chiang Mai is sweltering, soaked, muggy air; Chiang Rai is sweltering, soaked, clean air.
What is the weather like in Chiang Mai vs Chiang Rai in September?: In September, Chiang Mai averages 33°C high / 24°C low with about 232 mm of rain; Chiang Rai averages 32°C high / 24°C low with about 272 mm.