Cotonou
September
Weather in Cotonou for September 2025
Your guide to Cotonou weather in September - trends and predictions
In general, the average temperature in Cotonou at the beginning of September is 26.3 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 27.4 °C by the end of September.
Cotonou experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 125.1 mm.
Temperatures
Rain 🌧️
6
Dry days
24
Rainy days
0
Snow days
26°/24°
Temperatures
22 km/h
Avg max wind
84 %
Avg humidity
Cotonou in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  26° | 2 26° | 3 26° | 4  27° | 5 26° | 6 27° | 7 26° |
| 8 26° | 9 27° | 10 26° | 11 26° | 12  27° | 13  26° | 14 26° |
| 15 26° | 16 26° | 17 26° | 18 26° | 19 27° | 20  27° | 21  27° |
| 22 27° | 23 27° | 24 27° | 25 28° | 26 27° | 27 27° | 28 28° |
| 29 27° | 30 28° |
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Temperatures trend during September in Cotonou
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 | 26° /23° | 8.5 mm | 6 | |
| 2 Sept. | Moderate or heavy rain shower | 26° /23° | 12.6 mm | 6 | |
| 3 Sept. | Moderate or heavy rain shower | 26° /24° | 13.4 mm | 6 | |
| 4 Sept. | Light rain shower | 27° /23° | 1.1 mm | 7 | |
| 5 Sept. | Light rain shower | 26° /23° | 3.6 mm | 7 | |
| 6 Sept. | Light rain shower | 27° /24° | 1.5 mm | 7 | |
| 7 Sept. | Patchy rain possible | 26° /23° | 3 mm | 6 | |
| 8 Sept. | Light rain shower | 26° /24° | 1.6 mm | 6 | |
| 9 Sept. | Moderate or heavy rain shower | 27° /24° | 12 mm | 7 | |
| 10 Sept. | Moderate or heavy rain shower | 26° /24° | 10.3 mm | 6 | |
| 11 Sept. | Light rain shower | 26° /24° | 2 mm | 6 | |
| 12 Sept. | Overcast | 27° /24° | 0.5 mm | 6 | |
| 13 Sept. | Cloudy | 26° /24° | 1.2 mm | 6 | |
| 14 Sept. | Overcast | 26° /24° | 6.3 mm | 6 | |
| 15 Sept. | Overcast | 26° /24° | 0.9 mm | 6 | |
| 16 Sept. | Light rain shower | 26° /24° | 2.5 mm | 6 | |
| 17 Sept. | Light rain shower | 26° /24° | 3.4 mm | 6 | |
| 18 Sept. | Light rain shower | 26° /24° | 7.9 mm | 6 | |
| 19 Sept. | Light rain shower | 27° /24° | 2.5 mm | 6 | |
| 20 Sept. | Patchy light drizzle | 27° /24° | 0.7 mm | 6 | |
| 21 Sept. | Partly cloudy | 27° /24° | 1.7 mm | 7 | |
| 22 Sept. | Patchy rain possible | 27° /25° | 1 mm | 6 | |
| 23 Sept. | Light rain shower | 27° /24° | 6.9 mm | 6 | |
| 24 Sept. | Light rain shower | 27° /24° | 5.1 mm | 6 | |
| 25 Sept. | Patchy rain possible | 28° /24° | 0.7 mm | 6 | |
| 26 Sept. | Light rain shower | 27° /25° | 0.8 mm | 6 | |
| 27 Sept. | Patchy rain possible | 27° /25° | 0.7 mm | 6 | |
| 28 Sept. | Patchy rain possible | 28° /25° | 1.2 mm | 6 | |
| 29 Sept. | Light rain shower | 27° /24° | 9.3 mm | 6 | |
| 30 Sept. | Light rain shower | 28° /25° | 2.5 mm | 6 | |
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Important Notice
Our weather forecast for Cotonou 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 Cotonou forecast closer to your planned date for the most up-to-date weather information.
Cotonou in September - FAQ
What are the expected maximum and minimum temperatures in Cotonou during September?
During September, expect a variety of temperatures with highs around 26° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cotonou during September?
Significant rainfall exceeding 125.1 mm is expected in Cotonou during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Cotonou during September?
The average wind speed in Cotonou during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Cotonou
Explore the daily rainfall trends and prepare for Cotonous September weather 💧
UV exposure in Cotonou during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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