Koh Samui weather live forecast

Tomorrow's maximum temperature in Koh Samui is expected to be 29°C.

5-day weather forecast updated at 04:08 on Saturday 11th January 2025 GMT

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

Koh Samui weather forecast by day

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

Koh Samui weather for Saturday 11th January 2025

Expect isolated thunderstorms in Koh Samui, Thailand with a maximum temperature of 29°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0-2 mm of rainfall expected with 30% chance of some rain and a moderate breeze of 25 kph from the north-east.

  • 29°C maximum temperature29
    °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 8 (Very High)8
    UV index (Very High)
  • 30% chance of some rain30
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 25 kph from the North-East25
    kph wind from NE

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Koh Samui weather for Sunday 12th January 2025

Expect broken clouds in Koh Samui, Thailand with a maximum temperature of 28°C, low levels of heat & humidity, maximum UV of 8 (Very High) and 4 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 28 kph from the north-east.

  • 28°C maximum temperature28
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Moderate breeze of 28 kph from the North-East28
    kph wind from NE

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Koh Samui weather for Monday 13th January 2025

Expect broken clouds in Koh Samui, Thailand with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 20 kph from the north-east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 24°C minimum temperature24
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Moderate breeze of 20 kph from the North-East20
    kph wind from NE

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Koh Samui weather for Tuesday 14th January 2025

Expect scattered clouds in Koh Samui, Thailand with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north-east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 25°C minimum temperature25
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 9 (Very High)9
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 17 kph from the North-East17
    kph wind from NE

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Koh Samui weather for Wednesday 15th January 2025

Expect broken clouds in Koh Samui, Thailand with a maximum temperature of 30°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north-east.

  • 30°C maximum temperature30
    °C maximum temperature
  • 26°C minimum temperature26
    °C minimum temperature
  • Broken clouds
    broken clouds
  • 5 hours of bright sunshine5
    hours of sunshine
  • UV (maximum) index 8 (Very High)8
    UV index (Very High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 19 kph from the North-East19
    kph wind from NE

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  • Destinations across Europe, Americas, Asia, Africa & beyond
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Metric (°C / mm)  |  Imperial (°F / inches)

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