When to go
The Best Time to Visit Chiang Mai
Month-by-month climate data for Chiang Mai, Thailand — daily highs and lows, rain days, and an honest verdict for every month of the year.
Timing is the first real decision when planning Chiang Mai— it drives crowds, prices and what's actually open. Here's how the year breaks down so you can pick dates that fit the trip you're building, not just the weather.
Warmest in Chiang Mai: Apr (36°C / 97°F) · Coolest: Jan (28°C / 82°F) · Wettest: Aug (~30 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
Chiang Mai climate, month by month
January
28° / 17°C
~3 rain days
Excellent
February
30° / 18°C
~2 rain days
Excellent
March
35° / 21°C
~2 rain days
Good
April
36° / 24°C
~8 rain days
Fair
May
34° / 24°C
~21 rain days
Tough
June
32° / 24°C
~27 rain days
Fair
July
31° / 24°C
~28 rain days
Fair
August
30° / 24°C
~30 rain days
Fair
September
30° / 23°C
~26 rain days
Fair
October
29° / 22°C
~19 rain days
Good
November
29° / 20°C
~9 rain days
Excellent
December
28° / 18°C
~2 rain days
Excellent
Plan around it
Dates locked in? Start from the Chiang Mai travel guide or jump straight to a 3-day, 5-day or 7-day itinerary.