Koh Samui weather in December 2024

Expect 29°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Koh Samui in December. Check more long-term weather averages for Koh Samui in December before you book your next holiday to Thailand in 2024/2025.

  • 29°C maximum daytime temperature in December in Koh Samui29
    29°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in December in Koh Samui13
    13 days with some rainfall
  • 22°C minimum night-time temperature in December in Koh Samui22
    22°C min night temperature
  • 12 hours of daylight per day in December in Koh Samui12
    12 hours of daylight per day
  • High heat & humidity in December in Koh SamuiH
    High heat & humidity
  • 188 mm monthly rainfall in December in Koh Samui188
    188 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in December in Koh Samui10
    10 (Very High) UV index
  • 28°C sea temperature in December in Koh Samui28
    28°C sea temperature

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

Daytime temperatures usually reach 29°C in Koh Samui in December with high heat and humidity, falling to 22°C at night.

How sunny is it in Koh Samui in December?

There are normally 6 hours of bright sunshine each day in Koh Samui in December - that's 54% of daylight hours.

How warm is the sea around Koh Samui in December?

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

Does it rain in Koh Samui in December?

There are usually 13 days with some rain in Koh Samui in December and the average monthly rainfall is 188mm.

What is the chance of a typhoon in Koh Samui in December?

On average less than 1 day in December in Koh Samui is likely to be affected by the passage of one or more tropical storms.

Koh Samui December sunrise & sunset times

Browse the sunrise and sunset times for Koh Samui in December 2024. Select a month to view Koh Samui sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2024 06:21 17:57
Monday, 16th December 2024 06:28 18:03
Tuesday, 31st December 2024 06:35 18:10

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