Koh Chang weather in December 2025

Expect 30°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Koh Chang in December. Check more long-term weather averages for Koh Chang in December before you book your next holiday to Thailand in 2025/2026.

  • 30°C maximum daytime temperature in December in Koh Chang30
    30°C max day temperature
  • 9 hours of sunshine per day
  • 3 days with some rainfall in December in Koh Chang3
    3 days with some rainfall
  • 20°C minimum night-time temperature in December in Koh Chang20
    20°C min night temperature
  • 11 hours of daylight per day in December in Koh Chang11
    11 hours of daylight per day
  • High heat & humidity in December in Koh ChangH
    High heat & humidity
  • 26 mm monthly rainfall in December in Koh Chang26
    26 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in December in Koh Chang10
    10 (Very High) UV index
  • 28°C sea temperature in December in Koh Chang28
    28°C sea temperature

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The December weather guide for Thailand (Koh Chang) 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 Koh Chang in December?

Daytime temperatures usually reach 30°C in Koh Chang in December with high heat and humidity, falling to 20°C at night.

How sunny is it in Koh Chang in December?

There are normally 9 hours of bright sunshine each day in Koh Chang in December - that's 74% of daylight hours.

How warm is the sea around Koh Chang in December?

The average sea temperature around Koh Chang in December is 28°C.

Does it ever rain in Koh Chang in December?

There are usually 3 days with some rain in Koh Chang in December and the average monthly rainfall is 26mm.

Koh Chang December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 06:16 17:44
Tuesday, 16th December 2025 06:24 17:49
Wednesday, 31st December 2025 06:31 17:57

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