Climate in Chaweng Beach (Koh Samui), Thailand

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Average monthly minimum and maximum temperature in Chaweng Beach, Thailand

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Monthly hours of sunshine

The average monthly total hours of sunshine over the year

Average monthly hours of sunshine in Chaweng Beach, Thailand

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* Data from: Koh Samui, Thailand (13 KM, 8 Miles).

Average water temperature

The mean water temperature over the year.

Average monthly water temperature in Chaweng Beach, Thailand

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* Data from: Koh Samui, Thailand (13 KM, 8 Miles).

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Average monthly rainfall, snow, precipitation in Chaweng Beach, Thailand

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Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average monthly rainy days in Chaweng Beach, Thailand

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Average humidity

The mean monthly relative humidity over the year

Average monthly relative humidity in Chaweng Beach, Thailand

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* Data from: Koh Samui, Thailand (13 KM, 8 Miles).

Weather Forecasts for Chaweng Beach

Fri   Mar 29
33°C | 28°C
SE 18 km/h
partly cloudy and no rain

partly cloudy and no rain

Sat   Mar 30
33°C | 28°C
SE 18 km/h
1.5 mm
broken clouds and  chance of rain

broken clouds and chance of rain

Sun   Mar 31
33°C | 28°C
E 14 km/h
0.6 mm
partly cloudy and small chance of rain

partly cloudy and small chance of rain

The best time of year to visit Chaweng Beach in Thailand

Chaweng Beach has a Tropical savanna climate. It is warm and humid for most of the year. In comparison to Phuket and most of the rest of southern Thailand, Chaweng's weather is relatively drier. Phuket's wet season is spread over six to eight months. Chaweng Beach has only two months with more than 212 mm of rain). The heaviest precipitation typically falls in the months of October and November. For the rest of the year, given the tropical climate, rain showers are brief; 20–60 minutes duration is typical.

Other facts from our historical weather data:

  • Which months have the greatest rainfall in Chaweng Beach?
    Most rainfall (rainy season) is seen in September, October, November and December.
  • Which is the hottest month in Chaweng Beach?
    May has an average maximum temperature of 31°C and is the hottest month of the year.
  • Which is the coolest month in Chaweng Beach?
    The coolest month is January with an average maximum temperature of 28°C.
  • Which is the wettest month in Chaweng Beach?
    October tops the wettest month list with 302 mm of rainfall.
  • Which is the driest month in Chaweng Beach?
    February is the driest month with 45 mm of precipitation.
  • Which is the sunniest month in Chaweng Beach?
    March is the sunniest month with an average of 240 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.