Weather in Chiang Mai in December
December in Chiang Mai is warm outdoor weather. Days are long enough to be useful. Shade starts to matter at midday.
In Thailand, this is how Chiang Mai actually wears December, not how a country centroid would. December is the cold side of the year in Chiang Mai. Pack for that, not for a leftover summer photo.
- Average temp
- 23°C
17–29°C
- Rainfall
- 14 mm
Not much rain
- Sunshine
- 7.8 h
hours per day
What to expect
Daytime
Warm days in Chiang Mai in December. A hat starts to earn its keep at midday. Evenings are the comfortable part of the clock.
You can walk at more hours than in the fierce months. Still build in a pause when the sun is high. Nights are easy.
Rain
Rain is not the story in Chiang Mai in December. Pack for sun. A shower would be news, not a plan.
Do not build the trip around weather windows. Build it around shade if it is hot, and around getting outside if it is not.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
Sun protection
A layer for cooler evenings
Where to stay in Chiang Mai
Dates are a starting point for December.
Travel guides for Chiang Mai
What to read before you book.
Average weather in Chiang Mai
TemperatureRainfall
Check another month
This is the month you are reading. Change either side to look at another.
FAQs about Chiang Mai
Climate averages for Chiang Mai, 1991–2020.
The best time to visit Chiang Mai is between October and March, the most comfortable stretch of the year on these averages.
April is the hottest month, with an average around 30°C.
August is the wettest month, with about 234 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
