Ko Samui weather forecast

Last updated at 04:06 on Saturday 24th August 2019 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.

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

Ko Samui weather forecast by day

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

Ko Samui weather for Saturday 24th August 2019

Below is the Ko Samui weather forecast for Saturday 24th August 2019. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 7 (High) and 2 hours of bright sunshine. There are 5-10 mm of rainfall expected with 94% chance of some rain and a gentle breeze of 14 kph from the west.

  • 30°C maximum temperature30
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 2 hours of bright sunshine2
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 94% chance of some rain94
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 14 kph from the West14
    kph wind from W

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Ko Samui weather for Sunday 25th August 2019

Below is the Ko Samui weather forecast for Sunday 25th August 2019. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and no hours of bright sunshine. There are 0-2 mm of rainfall expected with 44% chance of some rain and a gentle breeze of 16 kph from the west.

  • 31°C maximum temperature31
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • No hours of bright sunshine0
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 44% chance of some rain44
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 16 kph from the West16
    kph wind from W

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Ko Samui weather for Monday 26th August 2019

Below is the Ko Samui weather forecast for Monday 26th August 2019. 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 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 56% chance of some rain and a gentle breeze of 18 kph from the west.

  • 30°C maximum temperature30
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 56% chance of some rain56
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 18 kph from the West18
    kph wind from W

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Ko Samui weather for Tuesday 27th August 2019

Below is the Ko Samui weather forecast for Tuesday 27th August 2019. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a moderate breeze of 24 kph from the west.

  • 31°C maximum temperature31
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 58% chance of some rain58
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 24 kph from the West24
    kph wind from W

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Ko Samui weather for Wednesday 28th August 2019

Below is the Ko Samui weather forecast for Wednesday 28th August 2019. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 11+ (Extreme) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 34% chance of some rain and a moderate breeze of 27 kph from the west.

  • 29°C maximum temperature29
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 1 hour of bright sunshine1
    hour of sunshine
  • UV (maximum) index 11+ (Extreme)11
    UV index (Extreme)
  • 34% chance of some rain34
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 27 kph from the West27
    kph wind from W

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