Asia › Thailand › Chiang Mai
30-year normals (1991-2020)
Chiang Mai has a tropical monsoon climate, classified as Am in the Köppen system. The warmest month is April with an average high of 36°C, while the coldest month is January with lows dropping to 16°C. The annual temperature range of 20°C reflects moderate seasonal variation.
The driest month is February with only 1 rain days and 3mm of precipitation. For travellers, February through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 78% to 78% throughout the year.
Based on temperature and rainfall data, the best months to visit Chiang Mai are January, November, December. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
Full Best Time to Visit GuideWarmest Month
36°C
April
Coldest Month
16°C
January
Driest Month
1 days
February
Annual Range
20°C
16° to 36°
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 28°C | 16°C | 1 | 10h | View |
| February | 31°C | 18°C | 1 | 11h | View |
| March | 34°C | 21°C | 2 | 11h | View |
| April | 36°C | 24°C | 5 | 11h | View |
| May | 33°C | 24°C | 14 | 10h | View |
| June | 31°C | 24°C | 20 | 9h | View |
| July | 30°C | 24°C | 23 | 7h | View |
| August | 29°C | 23°C | 25 | 7h | View |
| September | 29°C | 23°C | 24 | 8h | View |
| October | 29°C | 21°C | 16 | 10h | View |
| November | 28°C | 18°C | 4 | 10h | View |
| December | 27°C | 16°C | 2 | 10h | View |
January
1 rain days, 10h sun
February
1 rain days, 11h sun
March
2 rain days, 11h sun
April
5 rain days, 11h sun
May
14 rain days, 10h sun
June
20 rain days, 9h sun
July
23 rain days, 7h sun
August
25 rain days, 7h sun
September
24 rain days, 8h sun
October
16 rain days, 10h sun
November
4 rain days, 10h sun
December
2 rain days, 10h sun
Chiang Mai in April
Data Sources for Chiang Mai
Climate normals represent 30-year averages (1991-2020). Individual years may vary.