Koh Samui weather in August (Bangkok Province, Thailand)

This month is known as a warm month. The average maximum daytime temperature in Koh Samui in August lies at 29.3°C (84.74°F). The average minimum temperature goes down to around 26.1°C (78.98°F) (often the minimum temperature is noted at night).

Rainfall during August is high with an average of 156mm (6.1 inchec). There are generally around 16 rainy days. The sun will show itself now and again, with 152 hours of sunshine during the entire month.

 

Koh Samui, monthly averages in August

Show in Fahrenheit

Min Temperature 26 °C  

Max Temperature 29 °C  

Water Temperature 28 °C *  

Chance of Rain 56%  

Precipitation 155mm  

Rainy days 17 days  

Humidity 78% *  

Sunshine 152 hrs *  

Where to stay in Koh Samui

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Where to go in Thailand in August

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

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

So what to wear in August? Visitors traveling to Koh Samui should plan on bringing a totally waterproof coat since it will often be raining. However, also bring your summer cloths because it can be very warm or even hot. With a water temperature of around 28.8°C (83.84°F), 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 August.

Swimming

7/10

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.