Ko Samui weather in August 2019

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

Guide to Ko Samui weather in August

The average maximum daytime temperature in Ko Samui in August is a hot 31°C (88°F) with very high heat & humidity. The average night-time temperature is usually a warm 24°C (75°F). There are usually 6 hours of bright sunshine each day, which represents 47% of the 12 hours of daylight.

Expect 137mm (5.4 inches) of rainfall across the whole of August with 17 days with some rain falling. Maximum UV levels will be extreme (11+ UV index) at midday when the skies are clear.

The average sea temperature in and around Ko Samui in August is 29°C (84°F).

Ko Samui sunrise & sunset times for August 2019

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st August 2019 06:10 18:42
Friday, 16th August 2019 06:11 18:37
Saturday, 31st August 2019 06:11 18:29
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Where's hot in Thailand in August?

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

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