ThailandAverage weather for Koh Samui in March
It's hot in March in Koh Samui with an average temperature of 32°C. Temperatures this month range from a low of 31°C to a high of 33°C. At night, you can expect temperatures between 26°C and 27°C.
Start of March
The month of March starts in Koh Samui with hot temps, averaging around 32°C during the day and nights around 27°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid March
By mid-March, daytime temps stay steady at around 32°C, with nights around 27°C. Not much precipitation expected during this period. It’s mostly dry and sunny. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of March
By the end of March, the average daytime temperature in Koh Samui is around 33°C, while nighttime temps are about 27°C. A shower might pop up, but overall, the weather will be dry and sunny. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In March, there is an average of 50 mm of precipitation, spread over 6 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Koh Samui in March |
New York | ||
|---|---|---|---|
 Average temperature |
32°C | 11°C | |
 Max. temperature |
33°C | 14°C | |
| Min. temperature |
31°C | -5°C | |
 Total precipitation |
50 mm | 63 mm | |
| Rainy days |
6 days | 10 days | |
February
UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is March a good time to visit Koh Samui?
March is a good month to be in Koh Samui for sunny weather. You’ll have high temperatures and not too much rain.
Temperature records
With 39°C in 2015, Koh Samui reached the highest temperature in March over the past 10 years. The lowest daytime temperature in this month was 28°C in 2023. The extreme nighttime temperatures ranged from a lowest recorded value of 23°C to a highest value of 29°C.
Check out the climate of Koh Samui for all months and discover the best travel time
Daily Temperature in March in Koh Samui
This chart shows the average daily high and low temperatures in March for Koh Samui, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in March in Koh Samui
The chart below shows the average daily precipitation in March for Koh Samui, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for March, you can expect about 6 days of precipitation in Koh Samui.
Daily UV index in March in Koh Samui
This chart shows the average daily UV index in March in Koh Samui, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in March in Koh Samui over the years
This chart shows the average temperature in March in Koh Samui, measured in degrees Celsius, over the past few years.
Total precipitation in March in Koh Samui over the years
This chart shows the average precipitation in March in Koh Samui, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in March for Koh Samui
Click on any day in March to get detailed info about the usual weather on that day in Koh Samui. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in March in Koh Samui
Have you been to Koh Samui in March?
Share your weather experience in March in Koh Samui.
Average weather in Koh Samui by month
Click on a month below to see detailed weather info for Koh Samui. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Koh Samui for all months at once
