What to pack for Chiang Mai in December
- t-shirts and light layers
- a light jacket for evenings
Humidity averages 73%; max daily wind around 8 km/h.
How December compares
Best months in Chiang Mai: December–January. See the full best time to visit Chiang Mai guide.
Chiang Mai in December: the details
In December, Chiang Mai sees average daytime highs of 28°C (82°F) and overnight lows of 18°C (64°F). Rainfall totals roughly 19 mm across 2.3 rainy days, and the sun shines about 10.6 hours per day with 10.9 hours of daylight mid-month. Relative humidity averages 73%.
In context: December is the 11th-warmest month and the 11th-wettest in Chiang Mai. The sunniest month is April (10.9 h/day).
| Metric | December average |
|---|---|
| Daytime high | 28°C / 82°F |
| Overnight low | 18°C / 64°F |
| Rainfall | 19 mm over 2.3 rainy days |
| Sunshine | 10.6 h/day (10.9 h daylight) |
| Humidity | 73% |
| Travel score | 10.0 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Chiang Mai, Thailand (18.79, 98.98) — see our methodology. Actual conditions vary year to year.
Not set on Chiang Mai? Browse the best places to visit in December ranked by travel score.
Frequently asked questions
How hot is Chiang Mai in December?
Daytime highs in Chiang Mai in December average 28°C (82°F); nights drop to about 18°C.
Does it rain in Chiang Mai in December?
Expect around 2.3 rainy days and 19 mm of rainfall in December.
Is December a good time to visit Chiang Mai?
December is one of the best months to visit Chiang Mai. Overall travel score: 10.0/10. The best months are December–January.
Also good in December, near Chiang Mai
Where should you go next month?
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