Koh Samet Weather and Climate: A Comprehensive Guide
Koh Samet maintains a fairly consistent very warm average temperature.
It also has a relatively rainy climate with high levels of precipitation.
Let’s explore the climate details in depth to provide you with a complete overview.
Average maximum day and minimum night temperature
With minimal seasonal shifts, Koh Samet experiences a constant climate year-round. On average, daytime temperatures range from a very warm 31°C in April to a very warm 30°C in December.
Nighttime temperatures can drop, with average lows reaching 25°C in December. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Koh Samet has a notably wet climate with abundant precipitation, recording 1960 mm of rainfall per year. The seasons in Koh Samet, bring significant changes in precipitation. The wettest month, September, receives heavy rainfall, with an average of 322 mm of precipitation. This rainfall is distributed across 19 rainy days. In contrast, the driest month, December, experiences much less rainfall, totaling 16 mm over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Koh Samet Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
In Koh Samet, summer days are longer and more sunny, with daily sunshine hours peaking at 8.0 hours in March. As the darker season arrives, the brightness of the sun becomes less. September sees a soft sun for only 3.7 hours per average day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is high throughout the year in Koh Samet.
The city experiences its highest humidity in October, reaching 85%. In December, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
broken clouds and no rain almost clear and no rain broken clouds and no rainForecast for Koh Samet
6 m/s
7 m/s
7 m/s
Select a Month of Interest
Check the conditions for any month of the year.
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, November and December.
Other facts from our historical weather data:
Rainy season in Koh Samet occurs in the months of May, June, July, August, September and October.
May has an average maximum temperature of 31°C and is the hottest month of the year.
The coolest month is December with an average maximum temperature of 30°C.
September tops the wettest month list with 322 mm of rainfall.
December is the driest month with 16 mm of precipitation.
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.
