Weather in Koh Phangan for September 2026
Until now, September 2026 in Koh Phangan has been nearly identical to the historical average, with a temperature of 29.1 °C (showing only a slight deviation of 0.2 °C).
The forecast for the next days in Koh Phangan predicts temperatures to be around 28 °C, close to the historical average.
In general, the average temperature in Koh Phangan at the beginning of September is 29 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 28.4 °C by the end of September.
Koh Phangan experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 192.3 mm.
Is September a good time to visit Koh Phangan? check out the best time to travel to Koh Phangan page.
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Koh Phangan Weather September
Temperatures trend during September in Koh Phangan
September weather in Koh Phangan day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate or heavy rain shower | 29° /26° | 7.9 mm | 5 | |
| 2 Sept. |  Light rain shower | 29° /26° | 9.8 mm | 6 | |
| 3 Sept. | Light rain shower | 29° /26° | 6.6 mm | 5 | |
| 4 Sept. | Light rain shower | 29° /27° | 6.2 mm | 5 | |
| 5 Sept. | Moderate or heavy rain shower | 29° /26° | 10.3 mm | 6 | |
| 6 Sept. | Light rain shower | 29° /27° | 10.9 mm | 6 | |
| 7 Sept. |  Cloudy | 29° /27° | 3.5 mm | 6 | |
| 8 Sept. | Light rain shower | 29° /27° | 2.7 mm | 6 | |
| 9 Sept. | Patchy rain possible | 29° /27° | 6.2 mm | 6 | |
| 10 Sept. | Patchy rain possible | 29° /26° | 8.7 mm | 5 | |
| 11 Sept. |  Overcast | 29° /27° | 7.3 mm | 5 | |
| 12 Sept. |  Moderate rain | 29° /27° | 8.9 mm | 5 | |
| 13 Sept. | Moderate or heavy rain shower | 29° /26° | 17.8 mm | 5 | |
| 14 Sept. | Light rain shower | 28° /26° | 11.8 mm | 5 | |
| 15 Sept. | Light rain shower | 28° /26° | 6.1 mm | 6 | |
| 16 Sept. | Light rain shower | 29° /27° | 14.5 mm | 11.3 | |
| 17 Sept. | Light rain shower | 28° /27° | 6.7 mm | 5.6 | |
| 18 Sept. | Overcast | 28° /27° | 1.9 mm | 11.7 | |
| 19 Sept. | Patchy rain possible | 29° /27° | 9.1 mm | 9.4 | |
| 20 Sept. | Light rain shower | 28° /27° | 30.4 mm | 10 | |
| 21 Sept. | Light rain shower | 27° /25° | 24.2 mm | 6 | |
| 22 Sept. | Light rain shower | 27° /26° | 8 mm | 6 | |
| 23 Sept. | Patchy rain possible | 27° /26° | 6 mm | 6 | |
| 24 Sept. | Light rain shower | 28° /27° | 18.6 mm | 6 | |
| 25 Sept. | Light rain shower | 27° /25° | 7.7 mm | 6 | |
| 26 Sept. | Overcast | 28° /26° | 2.1 mm | 6 | |
| 27 Sept. | Overcast | 29° /28° | 4 mm | 7 | |
| 28 Sept. | Overcast | 29° /28° | 0.4 mm | 6 | |
| 29 Sept. | Overcast | 29° /28° | 1.9 mm | 7 | |
| 30 Sept. |  Partly cloudy | 29° /27° | 4.1 mm | 6 | |
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Koh Phangan weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 29°/27° | 28°/27° | 28°/27° |
| Rainfall | 152 mm | 192 mm | 323 mm |
| Wind | 27.4 km/h | 30.6 km/h | 22.2 km/h |
| Humidity | 74% | 75% | 75% |
| Rainy days | 31 days | 28 days | 31 days |
| Dry days | 0 days | 2 days | 0 days |
Planning a trip to Koh Phangan? Discover the best time to visit
Koh Phangan in September - FAQ
What are the expected maximum and minimum temperatures in Koh Phangan during September?
How much rainfall should be expected in Koh Phangan during September?
What are the typical wind conditions in Koh Phangan during September?
September rainfall patterns in Koh Phangan
UV exposure in Koh Phangan during September
What to pack to Koh Phangan in September?
Warm & sunny · highs around 28 °C, frequent showers
As you prepare for your trip to Koh Phangan 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 Phangan, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
🧴 Personal Items
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Where is Koh Phangan?Get accurate weather forecasts for Koh Phangan, located at latitude 9.745 and longitude 100.025. Stay updated with localized weather information tailored for Koh Phangan.