Ko Samui weather forecast

Last updated at 04:04 on Sunday 25th September 2022 GMT

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

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Ko Samui weather forecast by day

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

Ko Samui weather for Monday 26th September 2022

Below is the Ko Samui weather forecast for Monday 26th September 2022. 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 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 94% chance of some rain and a gentle breeze of 16 kph from the west.

  • 31°C maximum temperature31
    °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 11 (Extreme)11
    UV index (Extreme)
  • 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 16 kph from the West16
    kph wind from W

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Ko Samui weather for Tuesday 27th September 2022

Below is the Ko Samui weather forecast for Tuesday 27th September 2022. 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 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 82% chance of some rain and a moderate breeze of 22 kph from the west.

  • 31°C maximum temperature31
    °C maximum temperature
  • 27°C minimum temperature27
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    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
  • Moderate breeze of 22 kph from the West22
    kph wind from W

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Ko Samui weather for Wednesday 28th September 2022

Below is the Ko Samui weather forecast for Wednesday 28th September 2022. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 6 (High) and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 64% chance of some rain and a moderate breeze of 24 kph from the west.

  • 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 6 (High)6
    UV index (High)
  • 64% chance of some rain64
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    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 Thursday 29th September 2022

Below is the Ko Samui weather forecast for Thursday 29th September 2022. 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 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 73% chance of some rain and a moderate breeze of 24 kph from the west.

  • 31°C maximum temperature31
    °C maximum temperature
  • 27°C minimum temperature27
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 73% chance of some rain73
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    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 Friday 30th September 2022

Below is the Ko Samui weather forecast for Friday 30th September 2022. 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 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 75% chance of some rain and a moderate breeze of 23 kph from the west.

  • 31°C maximum temperature31
    °C maximum temperature
  • 27°C minimum temperature27
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 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
  • Moderate breeze of 23 kph from the West23
    kph wind from W

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

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