Dehiwala-Mount Lavinia
September
Weather in Dehiwala-Mount Lavinia for September 2025
Your guide to Dehiwala-Mount Lavinia weather in September - trends and predictions
Until now, September 2025 in Dehiwala-Mount Lavinia has been nearly identical to the historical average, with a temperature of 27.7 °C (showing only a slight deviation of 0 °C).
The forecast for the next days in Dehiwala-Mount Lavinia predicts temperatures to be around 28 °C, close to the historical average.
In general, the average temperature in Dehiwala-Mount Lavinia at the beginning of September is 27.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 28.3 °C by the end of September.
Dehiwala-Mount Lavinia experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 611 mm.
Temperatures
Rain 🌧️
0
Dry days
30
Rainy days
0
Snow days
28°/25°
Temperatures
21 km/h
Avg max wind
83 %
Avg humidity
Dehiwala-Mount Lavinia Weather September
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Temperatures trend during September in Dehiwala-Mount Lavinia
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September weather in Dehiwala-Mount Lavinia day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 27° /24° | 18.9 mm | 6 | |
| 2 Sept. |  Torrential rain shower | 27° /25° | 25.2 mm | 6 | |
| 3 Sept. | Torrential rain shower | 27° /24° | 37.3 mm | 6 | |
| 4 Sept. | Light rain shower | 28° /25° | 21.3 mm | 6 | |
| 5 Sept. | Light rain shower | 28° /25° | 30.1 mm | 6 | |
| 6 Sept. | Light rain shower | 28° /25° | 24.7 mm | 6 | |
| 7 Sept. | Light rain shower | 28° /25° | 28.4 mm | 6 | |
| 8 Sept. | Light rain shower | 28° /25° | 19.2 mm | 6 | |
| 9 Sept. |  Moderate or heavy rain shower | 28° /25° | 25.5 mm | 6 | |
| 10 Sept. | Moderate or heavy rain shower | 27° /25° | 22.8 mm | 6 | |
| 11 Sept. | Light rain shower | 27° /25° | 24.5 mm | 6 | |
| 12 Sept. |  Overcast | 28° /25° | 4.6 mm | 6 | |
| 13 Sept. | Overcast | 28° /25° | 7.8 mm | 6 | |
| 14 Sept. |  Partly cloudy | 28° /25° | 11.2 mm | 6 | |
| 15 Sept. |  Cloudy | 28° /25° | 17.6 mm | 6 | |
| 16 Sept. | Patchy rain possible | 29° /25° | 10.9 mm | 6 | |
| 17 Sept. | Heavy rain | 28° /26° | 32.6 mm | 2.8 | |
| 18 Sept. | Heavy rain | 28° /26° | 20.3 mm | 2.3 | |
| 19 Sept. |  Moderate rain | 28° /26° | 19.2 mm | 2.9 | |
| 20 Sept. | Moderate rain | 28° /25° | 12.2 mm | 3.4 | |
| 21 Sept. | Moderate rain | 28° /26° | 7.3 mm | 6 | |
| 22 Sept. | Patchy rain possible | 28° /26° | 3.9 mm | 6 | |
| 23 Sept. | Moderate rain | 28° /26° | 5 mm | 6 | |
| 24 Sept. | Patchy rain possible | 28° /26° | 1.7 mm | 6 | |
| 25 Sept. | Patchy rain possible | 28° /26° | 1.9 mm | 6 | |
| 26 Sept. | Patchy rain possible | 28° /27° | 1.7 mm | 6 | |
| 27 Sept. | Patchy rain possible | 28° /27° | 2.5 mm | 6 | |
| 28 Sept. | Patchy rain possible | 29° /26° | 1.2 mm | 6 | |
| 29 Sept. | Patchy rain possible | 29° /26° | 2 mm | 6 | |
| 30 Sept. | Patchy rain possible | 28° /25° | 2.9 mm | 6 | |
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Important Notice
Our weather forecast for Dehiwala-Mount Lavinia 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 Dehiwala-Mount Lavinia forecast closer to your planned date for the most up-to-date weather information.
Change Month
Dehiwala-Mount Lavinia in September - FAQ
What are the expected maximum and minimum temperatures in Dehiwala-Mount Lavinia during September?
During September, expect a variety of temperatures with highs around 28° and lows near 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Dehiwala-Mount Lavinia during September?
Significant rainfall exceeding 611 mm is expected in Dehiwala-Mount Lavinia during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Dehiwala-Mount Lavinia during September?
The average wind speed in Dehiwala-Mount Lavinia during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Dehiwala-Mount Lavinia
Explore the daily rainfall trends and prepare for Dehiwala-Mount Lavinias September weather 💧
UV exposure in Dehiwala-Mount Lavinia during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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