City, Thailand
Chiang Mai weather by month and the best time to visit
When to go to Chiang Mai
Nov–Jan is cool, dry and busiest. Feb–Apr burning season brings heavy smoke and April heat; Jun–Oct is rainy and green.
Chiang Mai weather by month
Average daily high, rainfall and conditions.
- Jan28°15 mm
- Feb32°5 mm
- Mar35°23 mm
- Apr37°63 mm
- May34°189 mm
- Jun32°141 mm
- Jul31°178 mm
- Aug30°237 mm
- Sep30°222 mm
- Oct29°123 mm
- Nov28°37 mm
- Dec27°13 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 28°C83°F | 16°C61°F | 15 mm | 67% | Pleasant |
| February | 32°C90°F | 17°C63°F | 5 mm | 56% | Pleasant |
| March | 35°C95°F | 20°C67°F | 23 mm | 52% | Hot |
| April | 37°C98°F | 23°C74°F | 63 mm | 56% | Very hot |
| May | 34°C93°F | 24°C75°F | 189 mm | 75% | Rainy |
| June | 32°C90°F | 24°C74°F | 141 mm | 81% | Hot & humid |
| July | 31°C88°F | 23°C74°F | 178 mm | 83% | Rainy |
| August | 30°C87°F | 23°C74°F | 237 mm | 87% | Rainy |
| September | 30°C86°F | 23°C74°F | 222 mm | 89% | Rainy |
| October | 29°C85°F | 22°C71°F | 123 mm | 87% | Pleasant |
| November | 28°C83°F | 19°C67°F | 37 mm | 82% | Pleasant |
| December | 27°C81°F | 16°C62°F | 13 mm | 76% | Pleasant |
Best months across Thailand
| Place | Best months | Warmest month |
|---|---|---|
| Bangkok | Nov–Feb | Mar (36°C) |
| Phuket | Nov–Mar | Mar (30°C) |
| Chiang Mai | Nov–Jan | Apr (37°C) |
| Koh Samui | Jan–Apr, Jul–Aug | May (30°C) |
| Krabi | Nov–Mar | Mar (31°C) |
| Koh Phi Phi | Nov–Mar | Apr (30°C) |
| Koh Phangan | Jan–Apr, Jul–Aug | May (27°C) |
| Pai | Nov–Feb | Apr (35°C) |
| Pattaya | Nov–Feb | Apr (31°C) |
| Koh Tao | Feb–Aug | May (29°C) |
| Patong | Nov–Apr | Mar (30°C) |
| Hua Hin | Nov–Mar | Apr (33°C) |
| Chiang Rai | Nov–Feb | Apr (35°C) |
| Ayutthaya | Nov–Feb | Mar (37°C) |
| Koh Lanta | Nov–Apr | Apr (29°C) |
| Railay | Nov–Mar | Mar (31°C) |
| Kanchanaburi | Nov–Feb | Apr (37°C) |
| Koh Chang | Nov–Feb | Apr (30°C) |
| Khao Lak | Nov–Mar | Mar (31°C) |
| Koh Samet | Nov–Mar | Apr (30°C) |
| Koh Lipe | Nov–Mar | Apr (30°C) |
| Khao Yai | Nov–Feb | Apr (34°C) |
| Khao Sok | Dec–Apr | Apr (32°C) |
| Sukhothai | Nov–Feb | Apr (38°C) |
| Hat Yai | Jan–Apr | Apr (31°C) |
| Kata Beach | Nov–Mar | Mar (30°C) |
| Jomtien | Nov–Feb | Apr (31°C) |
| Rawai | Nov–Mar | Mar (30°C) |
| Udon Thani | Nov–Feb | Apr (37°C) |
| Koh Kood | Nov–Mar | May (30°C) |
Quick answers
What is the best month to visit Chiang Mai?
Nov–Jan. Nov–Jan is cool, dry and busiest. Feb–Apr burning season brings heavy smoke and April heat; Jun–Oct is rainy and green.
When is the rainy season in Chiang Mai?
Rain peaks in August with about 237 mm. Months with 150 mm or more: May, Jul–Sep.
What is the hottest month in Chiang Mai?
April, with average highs of 37°C (98°F).
How cold does Chiang Mai get?
The coolest nights are in January, averaging 16°C (61°F).
More about Chiang Mai
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Sources
- NASA POWER climatology (2001–2020)
- Chiang Mai International Airport (Airports of Thailand)
- Bolt Chiang Mai
- Punspace
- Chiang Mai Ram Hospital
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 2.9°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.