Weather in Phuket for September 2025
Until now, September 2025 in Phuket is slightly cooler than the historical average by -0.9 °C.
The forecast for the next days in Phuket predicts temperatures to be around 29 °C, close to the historical average.
In general, the average temperature in Phuket at the beginning of September is 28 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 28.7 °C by the end of September.
Phuket experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 487.1 mm.
Is September a good time to visit Phuket? check out the best time to travel to Phuket page.
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Phuket Weather September
Temperatures trend during September in Phuket
September weather in Phuket day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 29° /25° | 23.7 mm | 6 | |
| 2 Sept. |  Moderate or heavy rain shower | 27° /24° | 35.7 mm | 6 | |
| 3 Sept. | Light rain shower | 27° /25° | 22.1 mm | 6 | |
| 4 Sept. |  Overcast | 28° /25° | 39.3 mm | 6 | |
| 5 Sept. |  Cloudy | 28° /25° | 27.1 mm | 6 | |
| 6 Sept. | Moderate or heavy rain shower | 28° /25° | 13.4 mm | 6 | |
| 7 Sept. | Light rain shower | 29° /25° | 11.9 mm | 6 | |
| 8 Sept. | Moderate or heavy rain shower | 28° /25° | 10.8 mm | 6 | |
| 9 Sept. | Moderate or heavy rain shower | 28° /25° | 11.2 mm | 6 | |
| 10 Sept. | Light rain shower | 29° /25° | 14.8 mm | 6 | |
| 11 Sept. | Patchy rain possible | 29° /25° | 3.4 mm | 6 | |
| 12 Sept. | Light rain shower | 29° /25° | 4.7 mm | 6 | |
| 13 Sept. | Light rain shower | 28° /25° | 8.3 mm | 6 | |
| 14 Sept. | Light rain shower | 28° /25° | 4.3 mm | 6 | |
| 15 Sept. | Moderate rain at times | 28° /25° | 10.7 mm | 6 | |
| 16 Sept. | Patchy rain possible | 28° /25° | 6.7 mm | 6 | |
| 17 Sept. |  Moderate rain | 29° /27° | 8.6 mm | 2.8 | |
| 18 Sept. | Moderate rain | 27° /26° | 7 mm | 2.7 | |
| 19 Sept. | Moderate rain | 27° /26° | 11.1 mm | 2.3 | |
| 20 Sept. | Patchy rain possible | 29° /26° | 3.4 mm | 3 | |
| 21 Sept. | Patchy rain possible | 29° /27° | 1.1 mm | 3.7 | |
| 22 Sept. |  Sunny | 29° /26° | 0 mm | 7 | |
| 23 Sept. | Patchy rain possible | 29° /27° | 2.5 mm | 6 | |
| 24 Sept. | Patchy rain possible | 29° /27° | 3.2 mm | 6 | |
| 25 Sept. | Patchy rain possible | 28° /27° | 3.9 mm | 6 | |
| 26 Sept. | Patchy rain possible | 29° /27° | 1.7 mm | 6 | |
| 27 Sept. | Patchy rain possible | 29° /26° | 0.4 mm | 6 | |
| 28 Sept. |  Partly cloudy | 29° /26° | 0 mm | 7 | |
| 29 Sept. | Patchy rain possible | 29° /26° | 0.3 mm | 6 | |
| 30 Sept. | Patchy rain possible | 28° /26° | 1.1 mm | 6 | |
| Next | |||||
Phuket weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 28°/26° | 28°/26° | 28°/25° |
| Rainfall | 322 mm | 487 mm | 321 mm |
| Wind | 17.4 km/h | 19.4 km/h | 15.8 km/h |
| Humidity | 78% | 79% | 79% |
| Rainy days | 31 days | 30 days | 31 days |
| Dry days | 0 days | 0 days | 0 days |
Planning a trip to Phuket? Discover the best time to visit
Phuket in September - FAQ
Phuket water temperatures in September
The average water temperature of the Andaman Sea near Phuket in September is 28 °C. At the beginning of September temperatures are around 28.1 °C; by the end of the month they get a bit cooler and reach 27.3 °C.
- What is the water temperature in Phuket in September?
- The average water temperature in Phuket in September is 28 °C.
- Can you swim in Phuket in September?
- The sea feels almost bath-like – perfect for floating, paddle-boarding or spending hours snorkeling without a wetsuit.
What to pack to Phuket in September?
As you prepare for your trip to Phuket 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 Phuket, 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 Phuket
UV exposure in Phuket during September
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Where is Phuket?Get accurate weather forecasts for Phuket, located at latitude 7.891 and longitude 98.398. Stay updated with localized weather information tailored for Phuket.