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Climate · Chiang Mai

Chiang Mai in December

Warm and dry, as the days hold steady.

Typical weather, averaged over 30 years

December in Chiang Mai is warm: highs near 84°F, lows near 61°F. Rain falls on about one day a week, and daylight holds at about 11 hours 1 minute.December in Chiang Mai is warm: highs near 29°C, lows near 16°C. Rain falls on about one day a week, and daylight holds at about 11 hours 1 minute.

High
84°F29°Caverage
Low
61°F16°Caverage
Wet days
1a week · 8% of days
Daylight
11h 01mon average

Is December a good time to visit Chiang Mai?

Yes. December is one of Chiang Mai's best months (December to January).

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How December sits in the year

week by week

Temperature

Highs near 84°F in December, against 84°F to 100°F through the year.Highs near 29°C in December, against 29°C to 38°C through the year.

Chance of a wet day

8% of days in December, against 5% to 89% through the year.

Cloud cover

45% cover in December, against 35% to 86% through the year.

Daylight

11h 01m in December, against 11h 01m to 13h 14m through the year.

Week by week, lightly smoothed, with December shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. November87°31°low 66°low 19°2 wet days a weekRain on about two days a week.
  2. December84°29°low 61°low 16°1 wet day a weekRain on about one day a week.
  3. January85°29°low 60°low 16°no wet daysRain on fewer than one day a week.

Where Chiang Mai sits, in December

Asia/Bangkok
this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
6:49 AMsets 5:49 PM
Above the sea
310 mlow-lying
Latitude
18.8°Nnorthern hemisphere
Nearest of ours
Chiang Saen201 km north-east

The land around Chiang Mai, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Thailand in December

high · low · wet days
See December on the planning mapThe whole year in Chiang Mai

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Chiang Mai. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (310 m) against the climate model's (394 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (310 m) against the climate model's (394 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.