Chiang Mai weather in December 2025

Expect daytime maximum temperatures of 28°C in Chiang Mai, Thailand in December based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 28°C maximum daytime temperature in December in Chiang Mai28
    28°C max day temperature
  • 8 hours of sunshine per day
  • 2 days with some rainfall in December in Chiang Mai2
    2 days with some rainfall
  • 14°C minimum night-time temperature in December in Chiang Mai14
    14°C min night temperature
  • 11 hours of daylight per day in December in Chiang Mai11
    11 hours of daylight per day
  • Moderate heat & humidity in December in Chiang MaiM
    Moderate heat & humidity
  • 12 mm monthly rainfall in December in Chiang Mai12
    12 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in December in Chiang Mai8
    8 (Very High) UV index

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The December weather guide for Thailand (Chiang Mai) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in Chiang Mai in December?

Daytime temperatures usually reach 28°C in Chiang Mai in December with moderate heat and humidity, falling to 14°C at night.

How sunny is it in Chiang Mai in December?

There are normally 8 hours of bright sunshine each day in Chiang Mai in December - that's 75% of daylight hours.

Does it ever rain in Chiang Mai in December?

There are usually 2 days with some rain in Chiang Mai in December and the average monthly rainfall is 12mm.

Chiang Mai December sunrise & sunset times

Browse the sunrise and sunset times for Chiang Mai in December 2025. Select a month to view Chiang Mai sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 06:40 17:46
Tuesday, 16th December 2025 06:49 17:50
Wednesday, 31st December 2025 06:56 17:58

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