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

In September, Chiang Mai averages 33°C high / 24°C low with about 232 mm of rain; London averages 21°C high / 12°C low with about 56 mm.

Chiang Mai vs London in September

London is the better pick in September — 84 vs 49 on SeasonMap's comfort score. London is nice, a little rain, clean air, while Chiang Mai is sweltering, soaked, muggy air.

Chiang Mai vs London — September climate, side by side

	Chiang Mai	London
Comfort score	49/100 (F)	84/100 (A)
Feels-like high	39°C	19°C
Avg high / low	33° / 24°	21° / 12°
Rainfall	232 mm	56 mm
Rainy days	23	11
Humidity	86%	78%
Air quality (AQI)	53	46

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

Chiang Mai vs London in September — FAQ

Is September better in Chiang Mai or London?: London is the better pick in September — 84 vs 49 on SeasonMap's comfort score. London is nice, a little rain, clean air, while Chiang Mai is sweltering, soaked, muggy air.
What is the weather like in Chiang Mai vs London in September?: In September, Chiang Mai averages 33°C high / 24°C low with about 232 mm of rain; London averages 21°C high / 12°C low with about 56 mm.