Ko Samui weather averages

Going to Ko Samui? Find the best month to visit Ko Samui based on the weather.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Check Ko Samui weather averages before you book your next holiday in 2018/2019. Today's maximum temperature in Ko Samui is expected to be 28°C, while the average maximum temperature in December is 29°C.

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More about Ko Samui

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The weather for Ko Samui, Thailand 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.

Metric (°C / mm)  |  Imperial (°F / inches)

Ko Samui weather averages: best month

Ko Samui Best month Averages
Warmest April & May 32°C
Sunniest February 9 hours per day
Least rain February & March 5 days
Warmest sea April, May & June 30°C

Ko Samui climate guide

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Tropical cyclone risk: Ko Samui, Thailand typhoon season

% of month affected by tropical cyclones
0
<1%
0
0
0
0
0
0
<1%
1%
2%
1%
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Dec

The Ko Samui, Thailand tropical cyclone 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.

More about tropical cyclones

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Ko Samui weather averages by month

Check Ko Samui holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare Ko Samui weather with the USA

Below the Ko Samui weather chart shows maximum daytime temperature for Ko Samui, Thailand and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

Maximum daytime temperature (°C)

Ko Samui, Thailand
USA (Washington)
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Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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Popular Thailand destinations

Below are average maximum temperatures at popular destinations in Thailand in December. Select a destination to see the weather overview and compare average conditions with today's forecast.

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