Climate in Koh Samet (Rayong Province), 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 Koh Samet, 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 Koh Samet, Thailand

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* Data from: Jomtien Beach, Thailand (66 KM, 41 Miles).

Monthly precipitation

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

Average monthly rainfall, snow, precipitation in Koh Samet, 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 Koh Samet, Thailand

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Average humidity

The mean monthly relative humidity over the year

Average monthly relative humidity in Koh Samet, Thailand

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* Data from: Jomtien Beach, Thailand (66 KM, 41 Miles).

Weather Forecasts for Koh Samet

Fri   Mar 29
32°C | 28°C
S 14 km/h
0.2 mm
partly cloudy and  chance of slight rain

partly cloudy and chance of slight rain

Sat   Mar 30
33°C | 29°C
S 11 km/h
0.8 mm
partly cloudy and  chance of slight rain

partly cloudy and chance of slight rain

Sun   Mar 31
33°C | 29°C
SW 18 km/h
almost clear and no rain

almost clear and no rain

The best time of year to visit Koh Samet in Thailand

Koh Samet has high temperatures year round ranging between 30°C and 31°C.
The best time to visit is during the drier months: January, February and December.

Other facts from our historical weather data:

  • When is the rainy season in Koh Samet?
    Rainy season in Koh Samet occurs in the months of May, June, July, August, September and October.
  • Which is the hottest month in Koh Samet?
    May has an average maximum temperature of 31°C and is the hottest month of the year.
  • Which is the coolest month in Koh Samet?
    The coolest month is December with an average maximum temperature of 30°C.
  • Which is the wettest month in Koh Samet?
    September tops the wettest month list with 322 mm of rainfall.
  • Which is the driest month in Koh Samet?
    December is the driest month with 16 mm of precipitation.
  • Which is the sunniest month in Koh Samet?
    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.