Weather in Koh Tao for September 2025
In general, the average temperature in Koh Tao at the beginning of September is 28.6 °C. As the month progressed, temperatures tended to remain steady, reaching an average of 28.6 °C by the end of September.
Koh Tao experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.
Is September a good time to visit Koh Tao? check out the best time to travel to Koh Tao page.
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Koh Tao in September average weather
Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
---|---|---|---|---|---|---|
1 29° | 2 28° | 3 28° | 4 28° | 5 29° | 6 29° | 7 29° |
8 29° | 9 29° | 10 29° | 11 29° | 12 29° | 13 29° | 14 28° |
15 28° | 16 28° | 17 28° | 18 28° | 19 28° | 20 29° | 21 29° |
22 29° | 23 29° | 24 28° | 25 28° | 26 28° | 27 28° | 28 29° |
29 29° | 30 30° |
You can click on date
Temperatures trend during September in Koh Tao
September weather day by day
Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
1 Sept. | Moderate or heavy rain shower | 29° /26° | 9.9 mm | 6 | |
2 Sept. | Moderate or heavy rain shower | 28° /26° | 16.8 mm | 6 | |
3 Sept. | Moderate or heavy rain shower | 28° /26° | 9.3 mm | 6 | |
4 Sept. | Moderate or heavy rain shower | 28° /27° | 10.4 mm | 6 | |
5 Sept. | Moderate or heavy rain shower | 29° /26° | 20.1 mm | 6 | |
6 Sept. | Moderate or heavy rain shower | 29° /27° | 18.9 mm | 6 | |
7 Sept. | Cloudy | 29° /27° | 3.1 mm | 6 | |
8 Sept. | Patchy rain possible | 29° /28° | 1.1 mm | 6 | |
9 Sept. | Patchy rain possible | 29° /27° | 1.6 mm | 7 | |
10 Sept. | Light rain shower | 29° /27° | 7.8 mm | 6 | |
11 Sept. | Overcast | 29° /27° | 0.9 mm | 7 | |
12 Sept. | Moderate rain | 29° /27° | 2.3 mm | 6 | |
13 Sept. | Partly cloudy | 29° /27° | 5.4 mm | 7 | |
14 Sept. | Overcast | 28° /26° | 4.1 mm | 6 | |
15 Sept. | Overcast | 28° /26° | 1.6 mm | 6 | |
16 Sept. | Light rain shower | 28° /27° | 5.9 mm | 6 | |
17 Sept. | Light rain shower | 28° /27° | 7.2 mm | 6 | |
18 Sept. | Light rain shower | 28° /27° | 9 mm | 6 | |
19 Sept. | Patchy light rain | 28° /26° | 3.6 mm | 6 | |
20 Sept. | Patchy rain possible | 29° /27° | 1.3 mm | 6 | |
21 Sept. | Moderate or heavy rain shower | 29° /27° | 10.3 mm | 6 | |
22 Sept. | Moderate or heavy rain shower | 29° /27° | 7.1 mm | 6 | |
23 Sept. | Light rain shower | 29° /27° | 4.7 mm | 6 | |
24 Sept. | Light rain shower | 28° /27° | 5.1 mm | 6 | |
25 Sept. | Light rain shower | 28° /25° | 6.4 mm | 6 | |
26 Sept. | Light rain shower | 28° /26° | 11.6 mm | 7 | |
27 Sept. | Light rain shower | 28° /26° | 9.6 mm | 6 | |
28 Sept. | Light rain shower | 29° /26° | 5.6 mm | 6 | |
29 Sept. | Patchy rain possible | 29° /27° | 6.9 mm | 7 | |
30 Sept. | Partly cloudy | 30° /27° | 0.2 mm | 7 | |
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Koh Tao in September - FAQ
What to pack to Koh Tao in September?
As you prepare for your trip to Koh Tao in September, 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 Koh Tao, during September, 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
- 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
September rainfall patterns in Koh Tao
UV exposure in Koh Tao during September
Quick links
Get accurate weather forecasts for Koh Tao, located at latitude 10.098 and longitude 99.838. Stay updated with localized weather information tailored for Koh Tao.