Dehiwala-Mount Lavinia
September
Weather in Dehiwala-Mount Lavinia for September 2026
Your guide to Dehiwala-Mount Lavinia weather in September - trends and predictions
Until now, September 2026 in Dehiwala-Mount Lavinia has been nearly identical to the historical average, with a temperature of 27.6 °C (showing only a slight deviation of 0.2 °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 slightly increase, reaching an average of 27.9 °C by the end of September.
Dehiwala-Mount Lavinia experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 553.4 mm.
Temperatures
Rain 🌧️
1
Dry days
29
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° /25° | 15.1 mm | 6 | |
| 2 Sept. | Patchy rain possible | 27° /25° | 22.1 mm | 6 | |
| 3 Sept. | Patchy rain possible | 27° /25° | 30.9 mm | 6 | |
| 4 Sept. | Light rain shower | 28° /25° | 18.4 mm | 6 | |
| 5 Sept. | Light rain shower | 28° /25° | 25.6 mm | 5 | |
| 6 Sept. | Light rain shower | 28° /25° | 19.9 mm | 5 | |
| 7 Sept. | Light rain shower | 28° /25° | 22.8 mm | 5 | |
| 8 Sept. | Light rain shower | 28° /25° | 21.6 mm | 6 | |
| 9 Sept. |  Moderate or heavy rain shower | 28° /25° | 21 mm | 6 | |
| 10 Sept. | Moderate or heavy rain shower | 28° /25° | 17.3 mm | 5 | |
| 11 Sept. | Light rain shower | 28° /25° | 18.9 mm | 5 | |
| 12 Sept. |  Overcast | 29° /25° | 6 mm | 5 | |
| 13 Sept. | Overcast | 28° /25° | 11.8 mm | 5 | |
| 14 Sept. |  Partly cloudy | 28° /25° | 12.1 mm | 5 | |
| 15 Sept. |  Cloudy | 28° /25° | 14.9 mm | 5 | |
| 16 Sept. | Light rain shower | 28° /25° | 17.1 mm | 5 | |
| 17 Sept. | Light rain shower | 28° /25° | 16.2 mm | 6 | |
| 18 Sept. | Light rain shower | 28° /25° | 15 mm | 5 | |
| 19 Sept. | Light rain shower | 28° /25° | 15.8 mm | 5 | |
| 20 Sept. | Moderate or heavy rain shower | 27° /25° | 30 mm | 5 | |
| 21 Sept. | Light rain shower | 28° /25° | 9.8 mm | 5 | |
| 22 Sept. | Patchy rain possible | 28° /25° | 11.4 mm | 5 | |
| 23 Sept. | Light rain shower | 28° /25° | 13.5 mm | 5 | |
| 24 Sept. | Patchy rain possible | 28° /25° | 24.7 mm | 5 | |
| 25 Sept. | Light rain shower | 28° /26° | 16.8 mm | 5 | |
| 26 Sept. | Light rain shower | 27° /25° | 20.7 mm | 6 | |
| 27 Sept. | Patchy rain possible | 28° /28° | 5.4 mm | 12.7 | |
| 28 Sept. | Light rain shower | 28° /27° | 22.8 mm | 11.7 | |
| 29 Sept. | Light rain shower | 28° /27° | 15.1 mm | 12.1 | |
| 30 Sept. | Patchy rain possible | 28° /27° | 6.7 mm | 12.2 | |
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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 553.4 mm is expected in Dehiwala-Mount Lavinia during September, occurring over more than 29 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 💧
Typically, Dehiwala-Mount Lavinia has 29 rainy days in September with a total of 553.4 mm of rainfall.
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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