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Ko Samui weather
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Usually
in June
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The weather guide for Thailand (Ko Samui) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
When is the best time to go to Ko Samui?
The best time to go to Ko Samui is February based on the following average weather conditions.
Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]
Change the criteria to reflect your weather preferences.
Max Day Temperature (°C)
- Jan
29 - Feb29
- Mar
30 - Apr32
- May32
- Jun31
- Jul31
- Aug31
- Sep31
- Oct30
- Nov29
- Dec29
Best time to go for the weather
Metric (°C / mm) | Imperial (°F / inches)
Tropical storm risk: Ko Samui, Thailand typhoon season
% of month affected by tropical storms
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
The Ko Samui, Thailand tropical storm risk chart above shows the typhoon season. The chart was processed from data supplied by the US Meteorological Agency (NOAA). Find out more about our data sources.
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More about Thailand
Which is the hottest month in Ko Samui?
The hottest time of year in Ko Samui is normally April. Expect maximum daytime temperatures to reach 32°C with very high heat and humidity.
Which month has the most rain in Ko Samui?
In terms of rainfall, November is usually the wettest month in Ko Samui with 463mm on average. There are normally 19 days in November with some rain.
When is it sunniest in Ko Samui?
The sunniest time of year in Ko Samui is normally February with bright sunshine on average for 72% of daylight hours; that's 9 hours of sunshine per day.
When is the sea warmest in Ko Samui?
The sea is usually at its warmest in Ko Samui in May when the water temperature reaches 30°C.
Compare Ko Samui weather with the USA
Below the Ko Samui weather chart shows average maximum daytime temperature for Ko Samui, Thailand and the USA (Washington).
Maximum daytime temperature (°C)
Ko Samui, Thailand
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Metric (°C / mm) | Imperial (°F / inches)
Compare more Ko Samui weather >>
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