Phnom Penh Weather in September
What's the weather like in Phnom Penh (Phnom Penh) in September 2024?
The climate in Phnom Penh during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Phnom Penh and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a steamy 31°C (88°F), whilst at night 25°C (76°F) is normal.
| Daytime temperature | 31.2°C 88.1°F |
|---|---|
| Nightly temperature | 24.5°C 76°F |
| Average temperature | 27.8°C 82°F |
| Daily sunshine | 5.3 hrs |
| Avg rainfall | 245 mm 9.6 ins |
| Rainy days | 19 days |
| Sea temperature | 29°C 84.1°F |
| Humidity | 84% |
| Windspeed | 7.9kph 5 mph |
On average September is the 2nd wettest month of the year in Phnom Penh with around 245mm 9.6 inches of rain making it a very wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.3 hours of sunshine per day.
September temperatures in Phnom Penh
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Phnom Penh in September 2024.
Other monthly averages
Best places to visit in September
Phnom Penh weather stats
| Hottest month: | April | 34.2°C 93.6°F |
|---|---|---|
| Driest month: | January | 6mm 0.2ins |
| Sunniest month: | January | 9.4hrs |
| Coldest month: | December | 29.9°C 85.8°F |
| Wettest month: | October | 263mm 10.4ins |
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