What is the weather like in Chiang Mai vs San Francisco in December?

In December, Chiang Mai averages 30°C high / 18°C low with about 8 mm of rain; San Francisco averages 15°C high / 9°C low with about 121 mm.

Chiang Mai vs San Francisco in December

Chiang Mai is the better pick in December — 84 vs 67 on SeasonMap's comfort score. Chiang Mai is hot, dry, while San Francisco is cool, rainy, clean air.

Chiang Mai vs San Francisco — December climate, side by side

	🇹🇭 Chiang Mai	🇺🇸 San Francisco
Comfort score	84/100 (A)	67/100 (C)
Feels-like high	33°C	13°C
Avg high / low	30° / 18°	15° / 9°
Rainfall	8 mm	121 mm
Rainy days	1	9
Humidity	74%	82%
Air quality (AQI)	79	50

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

Month by month

Chiang Mai vs San Francisco in December — FAQ

Is December better in Chiang Mai or San Francisco?: Chiang Mai is the better pick in December — 84 vs 67 on SeasonMap's comfort score. Chiang Mai is hot, dry, while San Francisco is cool, rainy, clean air.
What is the weather like in Chiang Mai vs San Francisco in December?: In December, Chiang Mai averages 30°C high / 18°C low with about 8 mm of rain; San Francisco averages 15°C high / 9°C low with about 121 mm.