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Koh Samui weather in August (Bangkok Province, Thailand)

What can you expect from the weather in Koh Samui during August? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In August, Koh Samui generally has very high temperatures and high rainfall. Daytime temperatures hover around 30°C, while nights can cool down to about 27°C.

While these temperatures are typical, some days might be even hotter. Always be prepared for the unexpected spikes in warmth. Dressing in lightweight and breathable outfits will help you stay cool. Don't forget to stay hydrated and wear sun protection to handle the heat better.

Koh Samui in August usually receives high rainfall, averaging around 103 mm for the month. Based on our climate data of the past 30 years, about 17 days of rain are anticipated.

The area enjoys a balanced 152 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

If your ideal day consists of dry skies and moderate temperatures January and February generally stand out with the best circumstances. While October and November tend to showcase 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 August

Min TemperatureMin Temperature 27°C  
Max TemperatureMax Temperature 30°C  
Water TemperatureWater Temperature 29°C  
Chance of RainChance of Rain 56%  
PrecipitationPrecipitation 103 mm  
Rainy daysRainy days 17 days  
HumidityHumidity 78%  
SunshineSunshine 152 hours  
Percentage SunshinePercentage Sunshine  

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.

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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°C and 29°C and not too much precipitation (less than 90 mm a month).

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

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 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.