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

In September, Bangkok averages 33°C high / 26°C low with about 254 mm of rain; Chiang Mai averages 33°C high / 24°C low with about 232 mm.

Bangkok vs Chiang Mai in September

Bangkok and Chiang Mai are nearly tied in September — 46 vs 49 on SeasonMap's comfort score. Bangkok is sweltering, soaked, muggy air; Chiang Mai is sweltering, soaked, muggy air.

Bangkok vs Chiang Mai — September climate, side by side

	🇹🇭 Bangkok	🇹🇭 Chiang Mai
Comfort score	46/100 (F)	49/100 (F)
Feels-like high	39°C	39°C
Avg high / low	33° / 26°	33° / 24°
Rainfall	254 mm	232 mm
Rainy days	26	23
Humidity	82%	86%
Air quality (AQI)	60	53

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

Month by month

Bangkok vs Chiang Mai in September — FAQ

Is September better in Bangkok or Chiang Mai?: Bangkok and Chiang Mai are nearly tied in September — 46 vs 49 on SeasonMap's comfort score. Bangkok is sweltering, soaked, muggy air; Chiang Mai is sweltering, soaked, muggy air.
What is the weather like in Bangkok vs Chiang Mai in September?: In September, Bangkok averages 33°C high / 26°C low with about 254 mm of rain; Chiang Mai averages 33°C high / 24°C low with about 232 mm.