Ko Samui
August
Weather in Ko Samui for August 2025
Your guide to Ko Samui weather in August - trends and predictions
In general, the average temperature in Ko Samui at the beginning of August is 28.7 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 29.4 °C by the end of August.
Ko Samui experiences an exceptionally high level of rainfall in August, with more than 24 rainy days on average.
Is August a good time to visit Ko Samui? check out the best time to travel to Ko Samui page.
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2
Dry days
29
Rainy days
0
Snow days
29°/27°
Temperatures
24 km/h
Avg max wind
74 %
Avg humidity
Ko Samui in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2 29° | 3  29° | ||||
| 4 29° | 5 29° | 6 29° | 7 28° | 8 29° | 9 30° | 10 30° |
| 11 30° | 12  29° | 13 30° | 14 30° | 15  29° | 16 29° | 17 30° |
| 18 30° | 19 29° | 20 29° | 21 29° | 22  29° | 23  29° | 24 29° |
| 25  29° | 26 30° | 27 29° | 28 29° | 29  30° | 30 29° | 31 30° |
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Temperatures trend during August in Ko Samui
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Patchy rain possible | 28° /27° | 1.4 mm | 6 | |
| 2 Aug. | Patchy rain possible | 29° /27° | 2.9 mm | 6 | |
| 3 Aug. | Partly cloudy | 29° /28° | 0.2 mm | 7 | |
| 4 Aug. | Patchy rain possible | 29° /27° | 4.5 mm | 6 | |
| 5 Aug. | Patchy rain possible | 29° /27° | 2.6 mm | 6 | |
| 6 Aug. | Light rain shower | 29° /27° | 5.8 mm | 6 | |
| 7 Aug. | Light rain shower | 28° /27° | 13.8 mm | 6 | |
| 8 Aug. | Patchy rain possible | 29° /27° | 0.4 mm | 6 | |
| 9 Aug. | Light rain shower | 30° /27° | 14.4 mm | 6 | |
| 10 Aug. | Patchy rain possible | 30° /28° | 1.1 mm | 7 | |
| 11 Aug. | Patchy rain possible | 30° /28° | 3.7 mm | 7 | |
| 12 Aug. | Moderate or heavy rain shower | 29° /28° | 10.3 mm | 6 | |
| 13 Aug. | Patchy rain possible | 30° /28° | 3.8 mm | 7 | |
| 14 Aug. | Patchy rain possible | 30° /28° | 3.2 mm | 7 | |
| 15 Aug. | Patchy light drizzle | 29° /28° | 2 mm | 6 | |
| 16 Aug. | Patchy rain possible | 29° /28° | 8.9 mm | 6 | |
| 17 Aug. | Patchy rain possible | 30° /28° | 6.9 mm | 6 | |
| 18 Aug. | Patchy rain possible | 30° /28° | 4.4 mm | 7 | |
| 19 Aug. | Patchy rain possible | 29° /28° | 2.3 mm | 6 | |
| 20 Aug. | Patchy rain possible | 29° /27° | 6.3 mm | 6 | |
| 21 Aug. | Moderate or heavy rain shower | 29° /27° | 2.1 mm | 6 | |
| 22 Aug. | Heavy rain at times | 29° /27° | 5.4 mm | 6 | |
| 23 Aug. | Sunny | 29° /27° | 6.1 mm | 7 | |
| 24 Aug. | Patchy rain possible | 29° /27° | 5.7 mm | 6 | |
| 25 Aug. | Cloudy | 29° /27° | 6.5 mm | 6 | |
| 26 Aug. | Patchy rain possible | 30° /27° | 3 mm | 7 | |
| 27 Aug. | Patchy rain possible | 29° /27° | 6.1 mm | 7 | |
| 28 Aug. | Partly cloudy | 29° /26° | 7.2 mm | 7 | |
| 29 Aug. | Thundery outbreaks possible | 30° /26° | 3.1 mm | 7 | |
| 30 Aug. | Patchy rain possible | 29° /28° | 3 mm | 7 | |
| 31 Aug. | Light rain shower | 30° /28° | 2.1 mm | 7 | |
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Important Notice
Our weather forecast for Ko Samui in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ko Samui forecast closer to your planned date for the most up-to-date weather information.
Ko Samui in August - FAQ
What are the expected maximum and minimum temperatures in Ko Samui during August?
During August, expect a variety of temperatures with highs around 29° and lows near 27°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ko Samui during August?
Significant rainfall exceeding 199.7 mm is expected in Ko Samui during August, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Ko Samui during August?
The average wind speed in Ko Samui during August is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Ko Samui in August?
As you prepare for your trip to Ko Samui in August, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Ko Samui, during August, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
August rainfall patterns in Ko Samui
Explore the daily rainfall trends and prepare for Ko Samuis August weather 💧
UV exposure in Ko Samui during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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