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

Chiang Mai beats Ayutthaya in 9 of 12 months — its lead peaks in February (82 vs 72) — while Ayutthaya wins August; they are within 3 points in June to July.

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.

Ayutthaya

🇹🇭 Thailand · tropical climate

Best month: December 80/100
Months won: 1 of 12

Chiang Mai

🇹🇭 Thailand · tropical climate

Best month: January 87/100
Months won: 9 of 12

Ayutthaya vs Chiang Mai — all 12 months

Month	Ayutthaya	Chiang Mai	Winner	Gap
January	78Bsweltering, dry	87Ahot, dry	Chiang Mai	9
February	72Bsweltering, dry, poor air quality	82Asweltering, dry	Chiang Mai	10
March	59Dsweltering, a little rain, poor air quality	65Csweltering, dry	Chiang Mai	6
April	48Fsweltering, a little rain, poor air quality	54Dsweltering, dry	Chiang Mai	6
May	46Fsweltering, soaked, poor air quality	52Dsweltering, rainy	Chiang Mai	6
June	58Dsweltering, rainy, muggy air	60Csweltering, rainy, clean air	Tie	2
July	55Dsweltering, soaked, clean air	53Dsweltering, soaked, clean air	Tie	2
August	54Dsweltering, soaked, clean air	46Fsweltering, soaked, clean air	Ayutthaya	8
September	44Fsweltering, soaked, muggy air	49Fsweltering, soaked, muggy air	Chiang Mai	5
October	56Dsweltering, soaked, muggy air	61Csweltering, soaked, muggy air	Chiang Mai	5
November	70Bsweltering, a little rain	74Bsweltering, a little rain, muggy air	Chiang Mai	4
December	80Asweltering, dry	84Ahot, dry	Chiang Mai	4

A month is a tie when the two are within 3 points. The widest gap is February (72 vs 82). Tap a month for that month's temperature, rain, humidity and air quality side by side.