Chiang Mai weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Excellent
Best time to visit: November – January
What is the weather like in Chiang Mai in December?
In December, Chiang Mai is hot: daytime highs average 27 °C, and nights cool down to about 17 °C. The sun shines for around 8 hours a day. It hardly ever rains. All in all, December is an excellent month for a holiday in Chiang Mai.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 82 | 94 | 92 |
| Day | 29° | 27° | 28° |
| Night | 19° | 17° | 16° |
| Sun | 7 h | 8 h | 9 h |
| Rain days | 5 | 1 | 1 |
More details for December
- Daylight
- 11 h 1 min06:49 – 17:49
- UV index
- 6 · highclear sky, noon (estimate)
- Muggy days
- 10 daysdew point 18 °C or more
- Wind
- 7 km/haverage daily peak
- Cloud cover
- 33 %on average
- Hot days
- 2 days30 °C or more
- Time zone
- UTC+7Asia/Bangkok
How the score comes together
- Temperatureweight 50 %95 %
- Sunshineweight 20 %80 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
Chiang Mai in December: quick answers
Is Chiang Mai hot in December?
Yes. In December, Chiang Mai is hot: daytime highs average 27 °C and nights stay around 17 °C. On about 2 days the thermometer climbs to 30 °C or more.
Does it rain much in Chiang Mai in December?
It hardly ever rains.
Chiang Mai month by month
The whole year in Chiang MaiAll destinations: Thailand
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)