Ko Samui weather averages for holidays in 2017/2018

Check Ko Samui weather averages before you book your next holiday in 2017/2018. Today's maximum temperature in Ko Samui is expected to be 31°C, while the average maximum temperature in August is 31°C.

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Ko Samui weather averages

Check out the Ko Samui weather averages before you book your next holiday to Thailand. The warmest months in Ko Samui are April and May with an average maximum temperature of 32°C. The sunniest month is February with on average 9 hours of bright sunshine per day. The months with the least number of days with some rain are February and March with 5 days. The sea is at its warmest in Ko Samui in April, May and June with an average sea temperature of 30°C.

Maximum daytime temperature (°C)

Hours of sunshine (daily)

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

Days with some rainfall

Sea temperature (°C)

More weather parameters

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

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Ko Samui weather today

Here is the weather in Ko Samui today, Wednesday 23rd August 2017. Expect isolated thunderstorms in Ko Samui, Thailand with a maximum temperature of 31°C, moderate levels of heat & humidity and 4 hours of bright sunshine. There are 2-5 mm of rainfall expected with 75% chance of some rain and a gentle breeze of 14 kph from the west.

  • 31
    °C maximum temperature
  • 25
    °C minimum temperature
  • isolated thunderstorms
  • 4
    hours of sunshine
  • 75
    % chance of some rain
  • <5
    mm of rainfall expected
  • M
    moderate heat & humidity
  • 14
    kph wind from W

5-day weather forecast

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

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

The Ko Samui, Thailand tropical cyclone risk chart above shows the typhoon season.

More about tropical cyclones

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Ko Samui holiday 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)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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