Ko Samui weather in August 2021

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  • 31°C maximum daytime temperature in August in Ko Samui31
    31°C max day temperature
  • 6 hours of sunshine per day
  • 17 days with some rainfall in August in Ko Samui17
    17 days with some rainfall
  • 24°C minimum night-time temperature in August in Ko Samui24
    24°C min night temperature
  • 12 hours of daylight per day in August in Ko Samui12
    12 hours of daylight per day
  • Very high heat & humidity in August in Ko SamuiVH
    Very High heat & humidity
  • 137 mm monthly rainfall in August in Ko Samui137
    137 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in August in Ko Samui11
    11+ (Extreme) UV index
  • 29°C sea temperature in August in Ko Samui29
    29°C sea temperature

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The August 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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How hot is it in Ko Samui in August?

Daytime temperatures usually reach 31°C in Ko Samui in August with very high heat and humidity, falling to 24°C at night.

How sunny is it in Ko Samui in August?

There are normally 6 hours of bright sunshine each day in Ko Samui in August - that's 47% of daylight hours.

How warm is the sea around Ko Samui in August?

The average sea temperature around Ko Samui in August is 29°C.

Does it rain in Ko Samui in August?

There are usually 17 days with some rain in Ko Samui in August and the average monthly rainfall is 137mm.

Ko Samui sunrise & sunset times for August 2021

Browse the sunrise & sunset times for Ko Samui in August 2021. Select a month to view Ko Samui sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st August 2021 06:10 18:42
Monday, 16th August 2021 06:11 18:37
Tuesday, 31st August 2021 06:11 18:29
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where is hot in Thailand in August for 2021/2022?

Below are average maximum temperatures at popular destinations in Thailand in August. Select a destination to see more weather parameters.

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