Koh Samui weather in August
August is a good time to visit Koh Samui, but only if you like hot weather.
You can expect very hot, sunny days interspersed with brief late-afternoon tropical downpours. Daytime temperatures average 29°C (84°F).
How hot is it in Koh Samui in August?
Daytime temperatures in Koh Samui in August reach an average high of 32°C (89°F) with high heat and humidity, falling to a night-time low of 27°C (80°F).
How sunny is it in Koh Samui in August?
There are normally six hours of bright sunshine each day in Koh Samui in August – that's around 47% of daylight hours.
August is the cloudiest month of the year in Koh Samui, with the sky overcast or mostly cloudy on average for 93% of the time.
Sunrise & sunset in August?
Sunrise is around 6:10am with sunset around 6:40pm.
How warm is the sea around Koh Samui in August?
The average sea temperature in Koh Samui in August is 29°C (84°F).
Does it rain in Koh Samui in August?
There are usually 10 days with some rain in Koh Samui in August; the average monthly rainfall is 98mm (3.8in).
The wet season typically lasts from May to mid-December, with a greater than 37% chance of a given day being a wet day. During this time you can expect frequent but brief heavy downpours interspersed with sunny skies.
How windy is it in Koh Samui in August?
August sees an average hourly wind speed of 19 kilometres per hour (12 mph; 10 knots).
What to do in Koh Samui in August?
Weather conditions in August are good for swimming, snorkelling, scuba diving and kayaking. It’s also a good time to explore Koh Samui on foot or by elephant.
Local holidays?
H.M. Queen Sirikit The Queen Mother’s Birthday – 12th Aug.
August is considered the low season in Koh Samui, with more reasonable hotel prices and less people on the beaches.
Koh Samui weather in August
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High Temp: 32°C (89°F) |
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Low Temp: 27°C (80°F) |
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Sunshine: 6 hours per day |
12
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Daylight: 12 hours per day |
 |
Wind speed: 19 km/h (12 mph; 10 knots) |
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Wet Days: 10 days with some rain |
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Rainfall: 98 mm (3.8 in) per month |
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Comfort Level: High heat & 78% humidity |
11
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UV Index: Extreme |
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Sea Temp: 29°C (84°F) |
| Koh Samui, Thailand | |
Best time to visit Koh Samui
The best time to visit Koh Samui is during January and February.
However, anytime during the dry season from mid-December through to early-March is good, with daytime temperatures averaging 28°C (82°F).
For more climate info: Koh Samui weather overview…
Koh Samui weather by month
Source: Meteorological data for Koh Samui is based on weather statistics gathered for the 10-year period 2012 to 2021 by the Thai Meteorological Department at the closest weather station: Koh Samui Airport, (USM), located about 2km north of Chaweng.
Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.
Latest update: Koh Samui weather in April: 12 June, 2024
Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.
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