Bangkok vs San Francisco: which is better, month by month

San Francisco beats Bangkok in 10 of 12 months — its lead peaks in September (96 vs 46) — while Bangkok wins December to January.

Each place is scored under the lens that suits its type. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.

Bangkok

🇹🇭 Thailand · tropical climate

Best month: December 75/100
Months won: 2 of 12

San Francisco

🇺🇸 United States · mild climate

Best month: September 96/100
Months won: 10 of 12

Bangkok vs San Francisco — all 12 months

Month	Bangkok	San Francisco	Winner	Gap
January	73Bsweltering, dry, poor air quality	68Ccool, rainy, clean air	Bangkok	5
February	69Csweltering, dry, poor air quality	75Bcool, rainy, muggy air	San Francisco	6
March	60Csweltering, a little rain, poor air quality	76Bcool, rainy, clean air	San Francisco	16
April	51Dsweltering, a little rain, poor air quality	85Anice, a little rain, clean air	San Francisco	34
May	47Fsweltering, rainy, muggy air	88Anice, dry, clean air	San Francisco	41
June	58Dsweltering, rainy, muggy air	92Snice, dry, clean air	San Francisco	34
July	56Dsweltering, soaked, clean air	93Snice, dry, clean air	San Francisco	37
August	57Dsweltering, rainy, clean air	95Snice, dry, clean air	San Francisco	38
September	46Fsweltering, soaked, muggy air	96Snice, dry, clean air	San Francisco	50
October	50Dsweltering, soaked, poor air quality	90Snice, dry, clean air	San Francisco	40
November	65Csweltering, a little rain, poor air quality	80Anice, a little rain, clean air	San Francisco	15
December	75Bsweltering, dry	67Ccool, rainy, clean air	Bangkok	8

A month is a tie when the two are within 3 points. The widest gap is September (46 vs 96). Tap a month for that month's temperature, rain, humidity and air quality side by side.