Weather in Phnom Penh for September 2025
In general, the average temperature in Phnom Penh at the beginning of September is 32 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 32.1 °C by the end of September.
Phnom Penh experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.
Is September a good time to visit Phnom Penh? check out the best time to travel to Phnom Penh page.
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Phnom Penh in September average weather
Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
---|---|---|---|---|---|---|
1 32° | 2 33° | 3 32° | 4 31° | 5 31° | 6 32° | 7 33° |
8 32° | 9 33° | 10 32° | 11 30° | 12 31° | 13 32° | 14 30° |
15 32° | 16 34° | 17 32° | 18 31° | 19 32° | 20 33° | 21 32° |
22 30° | 23 32° | 24 34° | 25 31° | 26 32° | 27 31° | 28 30° |
29 35° | 30 32° |
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Temperatures trend during September in Phnom Penh
September weather day by day
Date | Weather | Temperatures | Rain | UV | More |
---|---|---|---|---|---|
1 Sept. | Light rain shower | 32° /25° | 9.9 mm | 7 | |
2 Sept. | Light rain shower | 33° /25° | 9.5 mm | 7 | |
3 Sept. | Light rain shower | 32° /25° | 4.3 mm | 7 | |
4 Sept. | Light rain shower | 31° /25° | 1.7 mm | 7 | |
5 Sept. | Moderate or heavy rain shower | 31° /25° | 14.7 mm | 7 | |
6 Sept. | Light rain shower | 32° /26° | 4.4 mm | 7 | |
7 Sept. | Light rain shower | 33° /25° | 5.4 mm | 7 | |
8 Sept. | Moderate or heavy rain shower | 32° /25° | 7.6 mm | 7 | |
9 Sept. | Light rain shower | 33° /25° | 15.1 mm | 7 | |
10 Sept. | Overcast | 32° /25° | 1 mm | 7 | |
11 Sept. | Patchy rain possible | 30° /25° | 6.6 mm | 7 | |
12 Sept. | Cloudy | 31° /25° | 5.9 mm | 7 | |
13 Sept. | Moderate or heavy rain shower | 32° /25° | 5.3 mm | 7 | |
14 Sept. | Overcast | 30° /25° | 0.7 mm | 7 | |
15 Sept. | Overcast | 32° /25° | 1.5 mm | 7 | |
16 Sept. | Light rain shower | 34° /25° | 0.7 mm | 8 | |
17 Sept. | Patchy rain possible | 32° /24° | 5.9 mm | 7 | |
18 Sept. | Light rain shower | 31° /25° | 2.8 mm | 7 | |
19 Sept. | Patchy rain possible | 32° /25° | 3.2 mm | 7 | |
20 Sept. | Light rain shower | 33° /25° | 5.2 mm | 7 | |
21 Sept. | Light rain shower | 32° /25° | 8 mm | 7 | |
22 Sept. | Light rain shower | 30° /25° | 7.9 mm | 7 | |
23 Sept. | Light rain shower | 32° /24° | 8.1 mm | 7 | |
24 Sept. | Light rain shower | 34° /25° | 10 mm | 7 | |
25 Sept. | Moderate or heavy rain shower | 31° /25° | 14.8 mm | 7 | |
26 Sept. | Light rain shower | 32° /24° | 11.4 mm | 7 | |
27 Sept. | Light rain shower | 31° /24° | 5.2 mm | 7 | |
28 Sept. | Moderate rain | 30° /24° | 10.3 mm | 7 | |
29 Sept. | Overcast | 35° /25° | 2.2 mm | 8 | |
30 Sept. | Light rain shower | 32° /26° | 5.1 mm | 7 | |
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Phnom Penh in September - FAQ
What to pack to Phnom Penh in September?
As you prepare for your trip to Phnom Penh 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 Phnom Penh, 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 Phnom Penh
UV exposure in Phnom Penh during September
Quick links
Get accurate weather forecasts for Phnom Penh, located at latitude 11.562 and longitude 104.916. Stay updated with localized weather information tailored for Phnom Penh.