Chiang Mai weather by month & the best time to visit
Thailand · regional city · tropical — wet & dry seasons climate
The best time to visit Chiang Mai is February — its sunniest month (Sunshine Score 91/100), with December and January close behind. Chiang Mai averages about 2,275 hours of sunshine a year. Daytime highs around 32°C / 90°F and roughly 5 mm of rain in February.
When is the best time to visit Chiang Mai?
For sunshine, the best time to visit Chiang Mai is February, then December and January. The dullest month is April (40/100, 63 mm of rain). The full month-by-month picture is in the table below.
How sunny is Chiang Mai?
Chiang Mai gets a moderate 2,275 hours of sunshine a year. 51 Sunshine Score points separate February (91) from April (40), so the month you pick matters. It ranks #14 of 24 destinations in Thailand for annual sunshine, below the national median of 2,329 hours. Rain has a clear season: the wettest stretch, around August, carries about 51% of the annual 1,246 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 89 | 28° / 82°F | 16° / 61°F | 15 mm | 7 |
| February | 91 | 32° / 90°F | 17° / 63°F | 5 mm | 8 |
| March | 62 | 35° / 95°F | 20° / 68°F | 23 mm | 8 |
| April | 40 | 37° / 99°F | 23° / 73°F | 63 mm | 9 |
| May | 52 | 34° / 93°F | 24° / 75°F | 189 mm | 9 |
| June | 66 | 32° / 90°F | 24° / 75°F | 141 mm | 8 |
| July | 65 | 31° / 88°F | 23° / 73°F | 178 mm | 8 |
| August | 65 | 30° / 86°F | 23° / 73°F | 237 mm | 8 |
| September | 65 | 30° / 86°F | 23° / 73°F | 222 mm | 8 |
| October | 70 | 29° / 84°F | 22° / 72°F | 123 mm | 8 |
| November | 85 | 28° / 82°F | 19° / 66°F | 37 mm | 7 |
| December | 90 | 27° / 81°F | 16° / 61°F | 13 mm | 7 |
Nearest destinations
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Head-to-head
How Chiang Mai compares month by month: Chiang Mai vs Yangon · Chiang Mai vs Chiang Rai · Chiang Mai vs Phitsanulok · all comparisons
Chiang Mai: questions and answers
What kind of destination is Chiang Mai?
Chiang Mai is a regional city in Thailand at 310 m elevation with a tropical — wet & dry seasons climate.
How many hours of sunshine does Chiang Mai get a year?
Chiang Mai gets about 2,275 hours of sunshine a year, at its best around February.
When is the best time to visit Chiang Mai?
The sunniest time to visit Chiang Mai is February, when the Sunshine Score peaks at 91/100 (with December and January close behind). Expect daytime highs around 32°C / 90°F.
What is the least sunny month in Chiang Mai?
April is the least sunny month in Chiang Mai, scoring 40/100 with about 63 mm of rain.
How strong is the sun in Chiang Mai?
The typical midday UV index in Chiang Mai peaks around 9 (very high) in April, easing to about 7 (high) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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