Weather in Phuket for September 2025
In general, the average temperature in Phuket at the beginning of September is 28.1 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 28.4 °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.
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Phuket in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2  27° | 3 28° | 4  28° | 5  29° | 6 28° | 7  28° |
| 8 28° | 9 28° | 10 29° | 11 29° | 12 29° | 13 28° | 14 28° |
| 15 28° | 16 28° | 17 29° | 18 29° | 19 29° | 20 28° | 21 28° |
| 22 28° | 23 28° | 24 28° | 25 28° | 26 28° | 27 28° | 28 29° |
| 29 29° | 30 29° |
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Temperatures trend during September in Phuket
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Heavy rain at times | 29° /25° | 24.1 mm | 6 | |
| 2 Sept. | Moderate or heavy rain shower | 27° /24° | 40.4 mm | 6 | |
| 3 Sept. | Moderate or heavy rain shower | 28° /25° | 21.7 mm | 6 | |
| 4 Sept. | Overcast | 28° /25° | 47.2 mm | 6 | |
| 5 Sept. | Cloudy | 29° /25° | 30.1 mm | 6 | |
| 6 Sept. | Moderate or heavy rain shower | 28° /25° | 14.4 mm | 7 | |
| 7 Sept. | Light rain shower | 28° /25° | 13.6 mm | 6 | |
| 8 Sept. | Moderate or heavy rain shower | 28° /25° | 11 mm | 6 | |
| 9 Sept. | Moderate or heavy rain shower | 28° /25° | 11.6 mm | 7 | |
| 10 Sept. | Heavy rain at times | 29° /25° | 17.3 mm | 6 | |
| 11 Sept. | Patchy rain possible | 29° /26° | 4.1 mm | 6 | |
| 12 Sept. | Moderate rain at times | 29° /26° | 5.1 mm | 6 | |
| 13 Sept. | Moderate rain at times | 28° /25° | 8.6 mm | 6 | |
| 14 Sept. | Moderate rain at times | 28° /25° | 3.1 mm | 6 | |
| 15 Sept. | Moderate rain at times | 28° /25° | 8.4 mm | 6 | |
| 16 Sept. | Patchy rain possible | 28° /25° | 6.7 mm | 6 | |
| 17 Sept. | Light rain shower | 29° /25° | 7.3 mm | 7 | |
| 18 Sept. | Light rain shower | 29° /25° | 8.2 mm | 7 | |
| 19 Sept. | Moderate rain at times | 29° /26° | 10.5 mm | 6 | |
| 20 Sept. | Moderate or heavy rain shower | 28° /26° | 17.4 mm | 6 | |
| 21 Sept. | Moderate or heavy rain shower | 28° /25° | 18.4 mm | 6 | |
| 22 Sept. | Moderate or heavy rain shower | 28° /25° | 24.2 mm | 6 | |
| 23 Sept. | Patchy rain possible | 28° /25° | 19.3 mm | 6 | |
| 24 Sept. | Patchy rain possible | 28° /25° | 29.4 mm | 6 | |
| 25 Sept. | Patchy rain possible | 28° /25° | 12.4 mm | 6 | |
| 26 Sept. | Patchy rain possible | 28° /25° | 17.2 mm | 6 | |
| 27 Sept. | Moderate or heavy rain shower | 28° /25° | 17.7 mm | 6 | |
| 28 Sept. | Light rain shower | 29° /25° | 15.8 mm | 6 | |
| 29 Sept. | Moderate or heavy rain shower | 29° /25° | 10.7 mm | 6 | |
| 30 Sept. | Moderate or heavy rain shower | 29° /25° | 11.2 mm | 6 | |
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Guide for Phuket in September
Phuket, Thailand, in September is characterized by its tropical monsoon climate, which brings significant rainfall and high humidity. At the beginning of the month, the weather is typically warm and wet, with frequent heavy showers and thunderstorms.
Daytime temperatures usually hover around 28° to 30°, while nighttime temperatures can drop slightly to around 24° to 26°. The humidity levels are high, often exceeding 80%, making the air feel quite muggy.
As the month progresses, the weather pattern remains relatively consistent, with continued rainfall and occasional sunny intervals. The sea temperature is warm, around 29°, making it suitable for water activities, although caution is advised due to the potential for rough seas and strong currents.
Towards the end of September, the rainfall begins to decrease slightly, but the weather remains unpredictable with sudden downpours still possible. The temperatures remain fairly stable, with daytime highs around 29° to 31° and nighttime lows around 25° to 27°.
The humidity continues to be high, contributing to the overall tropical feel of the island.
Overall, September in Phuket is a month of transition, moving from the peak of the rainy season towards the drier months. Visitors should be prepared for wet conditions but can also enjoy the lush, green landscapes that the rains bring.
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Phuket in September - FAQ
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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