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

In September, Chiang Mai averages 33°C high / 24°C low with about 232 mm of rain; Oslo averages 18°C high / 10°C low with about 93 mm.

Chiang Mai vs Oslo in September

Oslo is the better pick in September — 74 vs 49 on SeasonMap's comfort score. Oslo is nice, rainy, clean air, while Chiang Mai is sweltering, soaked, muggy air.

Chiang Mai vs Oslo — September climate, side by side

	🇹🇭 Chiang Mai	🇳🇴 Oslo
Comfort score	49/100 (F)	74/100 (B)
Feels-like high	39°C	16°C
Avg high / low	33° / 24°	18° / 10°
Rainfall	232 mm	93 mm
Rainy days	23	10
Humidity	86%	82%
Air quality (AQI)	53	38

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

Month by month

Chiang Mai 🇹🇭 Thailandsweltering, soaked, muggy air · best January49
Oslo 🇳🇴 Norwaynice, rainy, clean air · best July74

Chiang Mai vs Oslo in September — FAQ

Is September better in Chiang Mai or Oslo?: Oslo is the better pick in September — 74 vs 49 on SeasonMap's comfort score. Oslo is nice, rainy, clean air, while Chiang Mai is sweltering, soaked, muggy air.
What is the weather like in Chiang Mai vs Oslo in September?: In September, Chiang Mai averages 33°C high / 24°C low with about 232 mm of rain; Oslo averages 18°C high / 10°C low with about 93 mm.