Colombo District (Colombo)
September
Weather in Colombo District for September 2025
Your guide to Colombo District weather in September - trends and predictions
Until now, September 2025 in Colombo District has been nearly identical to the historical average, with a temperature of 27.9 °C (showing only a slight deviation of 0.1 °C).
The forecast for the next days in Colombo District predicts temperatures to be around 28 °C, close to the historical average.
In general, the average temperature in Colombo District 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.
Colombo District experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 611.9 mm.
Temperatures
Rain 🌧️
0
Dry days
30
Rainy days
0
Snow days
28°/25°
Temperatures
20 km/h
Avg max wind
84 %
Avg humidity
Colombo District Weather September
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Temperatures trend during September in Colombo District
See the weather trend as well as the moving average line
September weather in Colombo District day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 27° /24° | 25.4 mm | 6 | |
| 2 Sept. |  Torrential rain shower | 27° /24° | 28.1 mm | 6 | |
| 3 Sept. | Torrential rain shower | 27° /24° | 34.8 mm | 6 | |
| 4 Sept. | Light rain shower | 28° /24° | 21.5 mm | 6 | |
| 5 Sept. | Light rain shower | 28° /25° | 29.7 mm | 6 | |
| 6 Sept. | Light rain shower | 28° /25° | 25 mm | 6 | |
| 7 Sept. | Light rain shower | 28° /24° | 26.3 mm | 6 | |
| 8 Sept. | Light rain shower | 28° /24° | 19.8 mm | 6 | |
| 9 Sept. |  Moderate or heavy rain shower | 28° /24° | 24.4 mm | 6 | |
| 10 Sept. | Moderate or heavy rain shower | 27° /24° | 22.4 mm | 6 | |
| 11 Sept. | Light rain shower | 27° /24° | 24 mm | 6 | |
| 12 Sept. | Light rain shower | 29° /24° | 4.7 mm | 6 | |
| 13 Sept. |  Overcast | 29° /25° | 7.7 mm | 6 | |
| 14 Sept. | Light rain shower | 29° /24° | 11.8 mm | 6 | |
| 15 Sept. |  Cloudy | 28° /25° | 17.3 mm | 6 | |
| 16 Sept. | Patchy rain possible | 29° /25° | 10.3 mm | 6 | |
| 17 Sept. | Heavy rain | 27° /26° | 38.6 mm | 1.8 | |
| 18 Sept. |  Moderate rain | 28° /26° | 19.2 mm | 2.9 | |
| 19 Sept. | Moderate rain | 28° /26° | 19.3 mm | 2.8 | |
| 20 Sept. | Moderate rain | 28° /26° | 8.4 mm | 2.2 | |
| 21 Sept. | Moderate rain | 28° /26° | 9.6 mm | 3.2 | |
| 22 Sept. | Patchy rain possible | 28° /26° | 2.1 mm | 6 | |
| 23 Sept. | Moderate rain | 28° /26° | 6 mm | 6 | |
| 24 Sept. | Patchy rain possible | 28° /26° | 2.8 mm | 6 | |
| 25 Sept. | Patchy rain possible | 29° /27° | 0.9 mm | 6 | |
| 26 Sept. | Patchy rain possible | 28° /27° | 1.7 mm | 6 | |
| 27 Sept. | Patchy rain possible | 28° /27° | 0.8 mm | 6 | |
| 28 Sept. | Patchy rain possible | 28° /26° | 1.8 mm | 6 | |
| 29 Sept. | Patchy rain possible | 29° /26° | 1.8 mm | 6 | |
| 30 Sept. | Patchy rain possible | 28° /26° | 1.3 mm | 6 | |
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Important Notice
Our weather forecast for Colombo District 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 Colombo District forecast closer to your planned date for the most up-to-date weather information.
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Colombo District in September - FAQ
What are the expected maximum and minimum temperatures in Colombo District 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 Colombo District during September?
Significant rainfall exceeding 611.9 mm is expected in Colombo District during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Colombo District during September?
The average wind speed in Colombo District during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Colombo District
Explore the daily rainfall trends and prepare for Colombo Districts September weather 💧
UV exposure in Colombo District during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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