Dehiwala-Mount Lavinia
September
Weather in Dehiwala-Mount Lavinia for September 2025
Your guide to Dehiwala-Mount Lavinia weather in September - trends and predictions
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 28.1 °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 in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  27° | 2  27° | 3 27° | 4 28° | 5 28° | 6 28° | 7 28° |
| 8 28° | 9 28° | 10 27° | 11 27° | 12  28° | 13 28° | 14  28° |
| 15  28° | 16  29° | 17 29° | 18 28° | 19 28° | 20 27° | 21 28° |
| 22 28° | 23 28° | 24 28° | 25 28° | 26 28° | 27 28° | 28 28° |
| 29 29° | 30 28° |
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Temperatures trend during September in Dehiwala-Mount Lavinia
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 | 27° /24° | 24.2 mm | 6 | |
| 2 Sept. | Torrential rain shower | 27° /25° | 37.1 mm | 6 | |
| 3 Sept. | Torrential rain shower | 27° /24° | 51.6 mm | 6 | |
| 4 Sept. | Moderate or heavy rain shower | 28° /25° | 26.6 mm | 6 | |
| 5 Sept. | Torrential rain shower | 28° /25° | 39 mm | 6 | |
| 6 Sept. | Moderate or heavy rain shower | 28° /25° | 33.5 mm | 6 | |
| 7 Sept. | Torrential rain shower | 28° /25° | 36.7 mm | 6 | |
| 8 Sept. | Moderate or heavy rain shower | 28° /25° | 27.4 mm | 6 | |
| 9 Sept. | Moderate or heavy rain shower | 28° /25° | 36.7 mm | 6 | |
| 10 Sept. | Moderate or heavy rain shower | 27° /25° | 27.6 mm | 6 | |
| 11 Sept. | Moderate or heavy rain shower | 27° /25° | 32.4 mm | 6 | |
| 12 Sept. | Overcast | 28° /25° | 3.7 mm | 6 | |
| 13 Sept. | Overcast | 28° /25° | 5.1 mm | 6 | |
| 14 Sept. | Partly cloudy | 28° /25° | 8.7 mm | 7 | |
| 15 Sept. | Cloudy | 28° /26° | 7.7 mm | 6 | |
| 16 Sept. | Patchy rain possible | 29° /25° | 10.9 mm | 6 | |
| 17 Sept. | Light rain shower | 29° /25° | 12.6 mm | 6 | |
| 18 Sept. | Light rain shower | 28° /25° | 11.2 mm | 6 | |
| 19 Sept. | Light rain shower | 28° /25° | 10.1 mm | 6 | |
| 20 Sept. | Moderate or heavy rain shower | 27° /25° | 25.6 mm | 6 | |
| 21 Sept. | Light rain shower | 28° /24° | 9.2 mm | 6 | |
| 22 Sept. | Patchy rain possible | 28° /25° | 9.4 mm | 6 | |
| 23 Sept. | Light rain shower | 28° /25° | 9.1 mm | 6 | |
| 24 Sept. | Patchy rain possible | 28° /25° | 16.5 mm | 6 | |
| 25 Sept. | Light rain shower | 28° /25° | 17.2 mm | 6 | |
| 26 Sept. | Light rain shower | 28° /25° | 15.3 mm | 6 | |
| 27 Sept. | Light rain shower | 28° /25° | 22.7 mm | 6 | |
| 28 Sept. | Light rain shower | 28° /25° | 15.2 mm | 6 | |
| 29 Sept. | Light rain shower | 29° /25° | 15 mm | 7 | |
| 30 Sept. | Light rain shower | 28° /25° | 13.1 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.
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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