Chiang Mai vs London: which is better, month by month

London beats Chiang Mai in 8 of 12 months — its lead peaks in August (93 vs 46) — while Chiang Mai wins November to February.

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.

Chiang Mai

🇹🇭 Thailand · tropical climate

Best month: January 87/100
Months won: 4 of 12

London

🇬🇧 United Kingdom · mild climate

Best month: July 94/100
Months won: 8 of 12

Chiang Mai vs London — all 12 months

Month	Chiang Mai	London	Winner	Gap
January	87Ahot, dry	54Dcold, a little rain, clean air	Chiang Mai	33
February	82Asweltering, dry	63Ccold, a little rain, clean air	Chiang Mai	19
March	65Csweltering, dry	69Ccold, a little rain, clean air	London	4
April	54Dsweltering, dry	79Bcool, a little rain, clean air	London	25
May	52Dsweltering, rainy	86Anice, a little rain, clean air	London	34
June	60Csweltering, rainy, clean air	91Snice, a little rain, clean air	London	31
July	53Dsweltering, soaked, clean air	94Swarm, a little rain, clean air	London	41
August	46Fsweltering, soaked, clean air	93Snice, a little rain, clean air	London	47
September	49Fsweltering, soaked, muggy air	84Anice, a little rain, clean air	London	35
October	61Csweltering, soaked, muggy air	73Bcool, a little rain, clean air	London	12
November	74Bsweltering, a little rain, muggy air	61Ccold, a little rain, clean air	Chiang Mai	13
December	84Ahot, dry	56Dcold, a little rain, clean air	Chiang Mai	28

A month is a tie when the two are within 3 points. The widest gap is August (46 vs 93). Tap a month for that month's temperature, rain, humidity and air quality side by side.