Chiang Rai vs Vientiane: which is better, month by month

Chiang Rai beats Vientiane in 2 of 12 months — its lead peaks in September (50 vs 43) — while Vientiane wins May; they are within 3 points in the other 9 months.

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 Rai

🇹🇭 Thailand · tropical climate

Best month: January 89/100
Months won: 2 of 12

Vientiane

🇱🇦 Laos · tropical climate

Best month: December 87/100
Months won: 1 of 12

Chiang Rai vs Vientiane — all 12 months

Month	Chiang Rai	Vientiane	Winner	Gap
January	89Ahot, a little rain	86Ahot, dry	Tie	3
February	84Ahot, dry	81Asweltering, dry	Tie	3
March	74Bsweltering, dry, poor air quality	70Bsweltering, dry	Chiang Rai	4
April	59Dsweltering, rainy, poor air quality	56Dsweltering, a little rain, poor air quality	Tie	3
May	46Fsweltering, soaked	50Dsweltering, soaked	Vientiane	4
June	49Fsweltering, soaked, clean air	47Fsweltering, soaked, clean air	Tie	2
July	41Fsweltering, soaked, clean air	40Fsweltering, soaked, clean air	Tie	1
August	40Fsweltering, soaked, clean air	38Fsweltering, soaked, clean air	Tie	2
September	50Dsweltering, soaked, clean air	43Fsweltering, soaked, clean air	Chiang Rai	7
October	63Csweltering, soaked, clean air	64Csweltering, rainy, clean air	Tie	1
November	76Bsweltering, a little rain, clean air	75Bsweltering, dry	Tie	1
December	87Ahot, dry	87Ahot, dry	Tie	0

A month is a tie when the two are within 3 points. The widest gap is September (50 vs 43). Tap a month for that month's temperature, rain, humidity and air quality side by side.