Ko Samui weather forecast

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Last updated at 04:05 on Monday 18th October 2021 GMT

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The 5-day weather forecast for Ko Samui, Thailand is provided by the Swiss meteorological agency, MeteoBlue. Find out more about our data sources.

Ko Samui weather forecast by day

Below are the detailed weather forecasts for Ko Samui for the next 5 days.

Ko Samui weather for Tuesday 19th October 2021

Below is the Ko Samui weather forecast for Tuesday 19th October 2021. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 82% chance of some rain and a light breeze of 8 kph from the north-east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 82% chance of some rain82
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 8 kph from the North-East8
    kph wind from NE

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Ko Samui weather for Wednesday 20th October 2021

Below is the Ko Samui weather forecast for Wednesday 20th October 2021. Expect scattered clouds in Ko Samui, Thailand with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 27°C minimum temperature27
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 13 kph from the East13
    kph wind from E

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Ko Samui weather for Thursday 21st October 2021

Below is the Ko Samui weather forecast for Thursday 21st October 2021. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 10 (Very High) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 67% chance of some rain and a light breeze of 7 kph from the north-east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 10 (Very High)10
    UV index (Very High)
  • 67% chance of some rain67
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 7 kph from the North-East7
    kph wind from NE

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Ko Samui weather for Friday 22nd October 2021

Below is the Ko Samui weather forecast for Friday 22nd October 2021. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 75% chance of some rain and a light breeze of 7 kph from the east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 27°C minimum temperature27
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 75% chance of some rain75
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 7 kph from the East7
    kph wind from E

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Ko Samui weather for Saturday 23rd October 2021

Below is the Ko Samui weather forecast for Saturday 23rd October 2021. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 11 (Extreme) and 4 hours of bright sunshine. There are 10-20 mm of rainfall expected with 95% chance of some rain and a light breeze of 8 kph from the north-east.

  • 31°C maximum temperature31
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 11 (Extreme)11
    UV index (Extreme)
  • 95% chance of some rain95
    % chance of some rain
  • 10-20 mm of rainfall expected<20
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Light breeze of 8 kph from the North-East8
    kph wind from NE

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

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