Koh Samui weather in March (Bangkok Province, Thailand)

How is the weather in Koh Samui in March? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In March, Koh Samui generally has high temperatures and moderate rainfall. Throughout the daytime, temperatures often hover around 30°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 27°C. Keep in mind, these temperatures are averages, and some days might be even warmer. Dress suitably to manage the heat.

Koh Samui in March usually receives moderate rainfall, averaging around 94 mm for the month. When we look at the climate data from the last 30 years, we can expect around 5 days of rain.

With around 240 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

In case you lean more towards enjoying temperate temperatures and rain-free days January and February typically offer the most optimal weather. In contrast, October and November tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Koh Samui climate page with graphs.

 

Koh Samui, monthly averages in March

Min TemperatureMin Temperature 27°C  
Max TemperatureMax Temperature 30°C  
Water TemperatureWater Temperature 29°C  
Chance of RainChance of Rain 15%  
PrecipitationPrecipitation 94 mm  
Rainy daysRainy days 5 days  
HumidityHumidity 82%  
SunshineSunshine 240 hours  
Percentage SunshinePercentage Sunshine  

Where to go in Thailand in March

Find out more about the weather in Thailand in March and which places have the best weather conditions in this month.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Koh Samui in March?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case. With a water temperature of around 29°C this is a great month to swim so bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in March.

Swimming
9/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Koh Samui.

Our site offers climate and forecast data for every country in the world. Are you going to Thailand? On this website you can find historical weather averages for many cities in Thailand. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.