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 an exceptionally high level of rainfall in September, with more than 20 rainy days on average.
Is September a good time to visit Cotonou? check out the best time to travel to Cotonou page.
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8
Dry days
22
Rainy days
0
Snow days
26°/25°
Temperatures
23 km/h
Avg max wind
85 %
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 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cotonou during September?
Significant rainfall exceeding 189.6 mm is expected in Cotonou during September, occurring over more than 22 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 23 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Cotonou in September?
As you prepare for your trip to Cotonou in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Cotonou, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
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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