Ko Samui weather in December 2021

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

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

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How hot is it in Ko Samui in December?

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

How sunny is it in Ko Samui in December?

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

How warm is the sea around Ko Samui in December?

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

Does it rain in Ko Samui in December?

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

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

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

Ko Samui December sunrise & sunset times

Browse the sunrise and sunset times for Ko Samui in December 2021. Select a month to view Ko Samui sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st December 2021 06:20 17:57
Thursday, 16th December 2021 06:28 18:02
Friday, 31st December 2021 06:35 18:10

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