Sihanoukville
September
Weather in Sihanoukville for September 2025
Your guide to Sihanoukville weather in September - trends and predictions
Until now, September 2025 in Sihanoukville has been nearly identical to the historical average, with a temperature of 27.5 °C (showing only a slight deviation of -0.2 °C).
The forecast for the next days in Sihanoukville predicts temperatures to be around 28 °C, close to the historical average.
In general, the average temperature in Sihanoukville at the beginning of September is 27.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 28.1 °C by the end of September.
Sihanoukville experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 844.2 mm.
Temperatures
Rain 🌧️
1
Dry days
29
Rainy days
0
Snow days
28°/26°
Temperatures
23 km/h
Avg max wind
81 %
Avg humidity
Sihanoukville Weather September
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Temperatures trend during September in Sihanoukville
See the weather trend as well as the moving average line
September weather in Sihanoukville day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate or heavy rain shower | 27° /25° | 63.8 mm | 6 | |
| 2 Sept. | Moderate or heavy rain shower | 27° /26° | 55.4 mm | 6 | |
| 3 Sept. | Moderate or heavy rain shower | 27° /25° | 61 mm | 6 | |
| 4 Sept. | Moderate or heavy rain shower | 28° /26° | 40.1 mm | 6 | |
| 5 Sept. |  Light rain shower | 28° /26° | 23.8 mm | 6 | |
| 6 Sept. | Moderate or heavy rain shower | 28° /27° | 42.2 mm | 6 | |
| 7 Sept. | Moderate or heavy rain shower | 28° /25° | 32.9 mm | 6 | |
| 8 Sept. | Moderate or heavy rain shower | 27° /25° | 38.7 mm | 6 | |
| 9 Sept. | Moderate rain at times | 28° /25° | 21.6 mm | 6 | |
| 10 Sept. | Moderate or heavy rain shower | 28° /26° | 8.9 mm | 6 | |
| 11 Sept. |  Heavy rain at times | 28° /26° | 8.1 mm | 6 | |
| 12 Sept. | Moderate or heavy rain shower | 28° /26° | 21.2 mm | 6 | |
| 13 Sept. | Moderate rain at times | 28° /25° | 12.9 mm | 6 | |
| 14 Sept. |  Moderate rain | 28° /25° | 7.3 mm | 2.3 | |
| 15 Sept. | Patchy rain possible | 28° /27° | 3.3 mm | 2.9 | |
| 16 Sept. | Moderate rain | 28° /27° | 8.4 mm | 1.5 | |
| 17 Sept. | Moderate rain | 28° /27° | 16.4 mm | 1.6 | |
| 18 Sept. |  Heavy rain | 28° /26° | 49.6 mm | 2.5 | |
| 19 Sept. | Heavy rain | 27° /25° | 80 mm | 6 | |
| 20 Sept. | Patchy rain possible | 28° /26° | 1.2 mm | 6 | |
| 21 Sept. |  Partly cloudy | 28° /26° | 0 mm | 7 | |
| 22 Sept. | Partly cloudy | 29° /28° | 0 mm | 7 | |
| 23 Sept. | Moderate rain | 28° /26° | 6.6 mm | 6 | |
| 24 Sept. | Moderate rain | 27° /26° | 7.2 mm | 6 | |
| 25 Sept. | Patchy rain possible | 27° /27° | 3.9 mm | 6 | |
| 26 Sept. | Partly cloudy | 28° /26° | 0 mm | 7 | |
| 27 Sept. | Patchy rain possible | 29° /27° | 1.1 mm | 6 | |
| 28 Sept. | Moderate rain at times | 28° /25° | 2.2 mm | 6 | |
| 29 Sept. | Partly cloudy | 29° /26° | 0 mm | 7 | |
| 30 Sept. | Light rain shower | 29° /28° | 0.6 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Sihanoukville 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 Sihanoukville forecast closer to your planned date for the most up-to-date weather information.
Change Month
Sihanoukville in September - FAQ
What are the expected maximum and minimum temperatures in Sihanoukville during September?
During September, expect a variety of temperatures with highs around 28° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Sihanoukville during September?
Significant rainfall exceeding 844.2 mm is expected in Sihanoukville during September, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sihanoukville during September?
The average wind speed in Sihanoukville during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Sihanoukville
Explore the daily rainfall trends and prepare for Sihanoukvilles September weather 💧
UV exposure in Sihanoukville during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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