Ko Samui weather forecast

Last updated at 04:05 on Monday 29th May 2023 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 Tuesday 30th May 2023

Below is the Ko Samui weather forecast for Tuesday 30th May 2023. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 78% chance of some rain and a gentle breeze of 16 kph from the west.

  • 32°C maximum temperature32
    °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 9 (Very High)9
    UV index (Very High)
  • 78% chance of some rain78
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 16 kph from the West16
    kph wind from W

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Ko Samui weather for Wednesday 31st May 2023

Below is the Ko Samui weather forecast for Wednesday 31st May 2023. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 2-5 mm of rainfall expected with 68% chance of some rain and a gentle breeze of 19 kph from the west.

  • 32°C maximum temperature32
    °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 8 (Very High)8
    UV index (Very High)
  • 68% chance of some rain68
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 19 kph from the West19
    kph wind from W

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Ko Samui weather for Thursday 1st June 2023

Below is the Ko Samui weather forecast for Thursday 1st June 2023. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 32°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 3 hours of bright sunshine. There are 2-5 mm of rainfall expected with 68% chance of some rain and a gentle breeze of 19 kph from the west.

  • 32°C maximum temperature32
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 3 hours of bright sunshine3
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 68% chance of some rain68
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 19 kph from the West19
    kph wind from W

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Ko Samui weather for Friday 2nd June 2023

Below is the Ko Samui weather forecast for Friday 2nd June 2023. 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 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 82% chance of some rain and a moderate breeze of 21 kph from the south-west.

  • 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 9 (Very High)9
    UV index (Very High)
  • 82% chance of some rain82
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 21 kph from the South-West21
    kph wind from SW

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Ko Samui weather for Saturday 3rd June 2023

Below is the Ko Samui weather forecast for Saturday 3rd June 2023. 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 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 65% chance of some rain and a gentle breeze of 19 kph from the west.

  • 31°C maximum temperature31
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 65% chance of some rain65
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 19 kph from the West19
    kph wind from W

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

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