Ko Samui weather in December 2019

  • 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 Ko Samui, Thailand 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)

Guide to Ko Samui weather in December

The average maximum daytime temperature in Ko Samui in December is a warm 29°C (84°F) with high heat & humidity. The average night-time temperature is usually a warm 22°C (72°F). There are usually 6 hours of bright sunshine each day, which represents 54% of the 12 hours of daylight.

Expect 188mm (7.4 inches) of rainfall across the whole of December with 13 days with some rain falling. Maximum UV levels will be very high (10 UV index) at midday when the skies are clear.

The average sea temperature in and around Ko Samui in December is 28°C (82°F).

Ko Samui sunrise & sunset times for December 2019

Browse the sunrise & sunset times for Ko Samui in December 2019. Select a month to view Ko Samui sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st December 2019 06:20 17:57
Monday, 16th December 2019 06:28 18:02
Tuesday, 31st December 2019 06:35 18:10
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Below are average maximum temperatures at popular destinations in Thailand in December. Select a destination to see more weather parameters.

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