Cambodia (Siem Reap)
September
Weather in Cambodia for September 2025
Your guide to Cambodia weather in September - trends and predictions
In general, the average temperature in Cambodia at the beginning of September is 31.3 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 30.6 °C by the end of September.
Cambodia experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 257.9 mm.
Is September a good time to visit Cambodia? check out the best time to travel to Cambodia page.
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Temperatures
Rain 🌧️
More
2
Dry days
28
Rainy days
0
Snow days
31°/24°
Temperatures
14 km/h
Avg max wind
80 %
Avg humidity
Cambodia in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  31° | 2  32° | 3 31° | 4 31° | 5 31° | 6 31° | 7 32° |
| 8 32° | 9 32° | 10 32° | 11 29° | 12  31° | 13 30° | 14 30° |
| 15 30° | 16 31° | 17 31° | 18 29° | 19 31° | 20 32° | 21  30° |
| 22 30° | 23 31° | 24 31° | 25 29° | 26 30° | 27  30° | 28 29° |
| 29 33° | 30 32° |
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Temperatures trend during September in Cambodia
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Moderate or heavy rain shower | 31° /24° | 17 mm | 7 | |
| 2 Sept. | Light rain shower | 32° /24° | 8.6 mm | 7 | |
| 3 Sept. | Patchy rain possible | 31° /24° | 16.5 mm | 7 | |
| 4 Sept. | Moderate or heavy rain shower | 31° /24° | 14.4 mm | 7 | |
| 5 Sept. | Moderate or heavy rain shower | 31° /24° | 31.3 mm | 7 | |
| 6 Sept. | Moderate or heavy rain shower | 31° /24° | 15.1 mm | 7 | |
| 7 Sept. | Patchy rain possible | 32° /24° | 1.7 mm | 7 | |
| 8 Sept. | Patchy rain possible | 32° /25° | 5.8 mm | 7 | |
| 9 Sept. | Moderate or heavy rain shower | 32° /25° | 24.1 mm | 7 | |
| 10 Sept. | Moderate or heavy rain shower | 32° /24° | 11.3 mm | 7 | |
| 11 Sept. | Light rain shower | 29° /24° | 4.7 mm | 7 | |
| 12 Sept. | Overcast | 31° /24° | 1.3 mm | 7 | |
| 13 Sept. | Overcast | 30° /24° | 7.5 mm | 7 | |
| 14 Sept. | Overcast | 30° /24° | 0.3 mm | 7 | |
| 15 Sept. | Overcast | 30° /23° | 0.2 mm | 7 | |
| 16 Sept. | Light rain shower | 31° /24° | 4.2 mm | 7 | |
| 17 Sept. | Light rain shower | 31° /24° | 6.9 mm | 7 | |
| 18 Sept. | Light rain shower | 29° /24° | 6 mm | 7 | |
| 19 Sept. | Light rain shower | 31° /23° | 5.7 mm | 7 | |
| 20 Sept. | Light rain shower | 32° /24° | 7.3 mm | 7 | |
| 21 Sept. | Patchy light rain with thunder | 30° /24° | 13.7 mm | 7 | |
| 22 Sept. | Patchy rain possible | 30° /24° | 9.9 mm | 7 | |
| 23 Sept. | Light rain shower | 31° /24° | 4.7 mm | 7 | |
| 24 Sept. | Light rain shower | 31° /24° | 9.6 mm | 7 | |
| 25 Sept. | Patchy rain possible | 29° /24° | 4.7 mm | 7 | |
| 26 Sept. | Light rain shower | 30° /23° | 5.6 mm | 7 | |
| 27 Sept. | Patchy light drizzle | 30° /23° | 4.5 mm | 7 | |
| 28 Sept. | Light rain shower | 29° /24° | 8.8 mm | 7 | |
| 29 Sept. | Light rain shower | 33° /24° | 1.7 mm | 7 | |
| 30 Sept. | Light rain shower | 32° /24° | 4.9 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Cambodia in September 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 Cambodia forecast closer to your planned date for the most up-to-date weather information.
Cambodia in September - FAQ
What are the expected maximum and minimum temperatures in Cambodia during September?
During September, expect a variety of temperatures with highs around 31° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cambodia during September?
Significant rainfall exceeding 257.9 mm is expected in Cambodia during September, occurring over more than 28 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Cambodia during September?
The average wind speed in Cambodia during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Cambodia in September?
As you prepare for your trip to Cambodia 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 Cambodia, 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
- 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
- Insect Repellent: For destinations with mosquitos or other insects
September rainfall patterns in Cambodia
Explore the daily rainfall trends and prepare for Cambodias September weather 💧
UV exposure in Cambodia during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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