December · Thailand
Best time to visit Chiang Mai in December Weather, crowds & prices
Weather in Chiang Mai in December
Average temperature 20°C, 20 mm of rain, about 15 days with 6+ hours of sunshine and 84% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
8.8/10
Ranked #5 of 12 months
- Avg temp
- 20°C
- Rainfall
- 20 mm
- Humidity
- 84%
- Days with 6h+ sun
- 15
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
December in Chiang Mai scores 8.8/10 for sightseeing and cultural travel - an above-average month (#5 of 12). Expect around 20°C, 20 mm of rain, and roughly 15 days with 6+ hours of sunshine this month.
Temple mountains, night markets, and cooler northern air shine January through March.
December ranks 5th of 12 for Chiang Mai — one of the best windows
December averages 20°C (68°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Expect 20 mm of rain — occasional showers rather than washed-out days — alongside about 15 days with 6+ hours of sunshine and 10.9 daylight hours.
A 8.8/10 puts this among the year's best months in Chiang Mai (5th of 12); only February scores higher, at 9.8/10.
Pack light clothing, a hat and real sun protection.
Plan for peak pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Chiang Mai in December?
- In December, Chiang Mai averages 20°C, 20 mm of rain, and about 15 days with 6+ hours of sunshine. Its climate-comfort score is 8.8/10.
- Is December a good time to visit Chiang Mai?
- December earns a 8.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Chiang Mai in December?
- Expect about 20 mm of rain in December. Average humidity is 84% and there are about 15 days with 6+ hours of sunshine.
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