Measured, not vibes
Best Time to Visit Chiang Mai
By measured weather comfort, the top months for Chiang Mai are December, January, February — and RouteVerdict's editorial pick, which also weighs crowds and prices, is January, February, November, December. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Chiang Mai (313 m elevation).
Month by month
Chiang Mai weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 27.6°C / 82°F | 3.2 | 82 | Best |
| February | 30.2°C / 86°F | 2 | 70 | Best |
| March | 34.8°C / 95°F | 1.8 | 41 | |
| April | 35.7°C / 96°F | 6.8 | 32 | |
| May | 33.8°C / 93°F | 17.8 | 32 | |
| June | 31.8°C / 89°F | 22.7 | 40 | |
| July | 30.5°C / 87°F | 23 | 46 | |
| August | 29.6°C / 85°F | 24.7 | 50 | |
| September | 29.5°C / 85°F | 22.2 | 50 | Shoulder |
| October | 29.1°C / 84°F | 15.5 | 55 | Shoulder |
| November | 28.9°C / 84°F | 7.5 | 69 | |
| December | 27.5°C / 82°F | 2 | 85 | Best |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
FAQ
Chiang Mai timing questions
What is the best month to visit Chiang Mai?
By measured weather comfort (ERA5 2020–2024), the top months are December, January, and February, with December scoring highest. RouteVerdict's editorial pick is January, February, November, and December, which also weighs crowds, prices, and events.
What is the hottest month in Chiang Mai?
April, with an average daily high of 35.7°C (96°F).
What is the rainiest month in Chiang Mai?
August, averaging 24.7 days with at least 1 mm of precipitation.
When is shoulder season in Chiang Mai?
October and September — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.