Bissau
September
Weather in Bissau for September 2025
Your guide to Bissau weather in September - trends and predictions
In general, the average temperature in Bissau at the beginning of September is 27.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 29.3 °C by the end of September.
Bissau experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.
Is September a good time to visit Bissau? check out the best time to travel to Bissau page.
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0
Dry days
30
Rainy days
0
Snow days
28°/24°
Temperatures
16 km/h
Avg max wind
84 %
Avg humidity
Bissau in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2  29° | 3  28° | 4 29° | 5 27° | 6 27° | 7 28° |
| 8 29° | 9 28° | 10 27° | 11 28° | 12  28° | 13 29° | 14 27° |
| 15 28° | 16 27° | 17 28° | 18 28° | 19 28° | 20 28° | 21 28° |
| 22  27° | 23  29° | 24 30° | 25  29° | 26 27° | 27 30° | 28  30° |
| 29 29° | 30 30° |
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Temperatures trend during September in Bissau
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. | Torrential rain shower | 25° /24° | 29.6 mm | 6 | |
| 2 Sept. | Moderate or heavy rain shower | 29° /24° | 13.1 mm | 7 | |
| 3 Sept. | Light rain shower | 28° /24° | 4 mm | 6 | |
| 4 Sept. | Torrential rain shower | 29° /23° | 26.1 mm | 6 | |
| 5 Sept. | Torrential rain shower | 27° /24° | 16.7 mm | 6 | |
| 6 Sept. | Moderate or heavy rain shower | 27° /24° | 42.7 mm | 6 | |
| 7 Sept. | Torrential rain shower | 28° /23° | 15.3 mm | 6 | |
| 8 Sept. | Moderate or heavy rain shower | 29° /23° | 9.2 mm | 6 | |
| 9 Sept. | Torrential rain shower | 28° /23° | 14.7 mm | 6 | |
| 10 Sept. | Patchy rain possible | 27° /24° | 33.6 mm | 6 | |
| 11 Sept. | Moderate or heavy rain shower | 28° /24° | 20.4 mm | 6 | |
| 12 Sept. | Cloudy | 28° /24° | 4.7 mm | 6 | |
| 13 Sept. | Moderate rain at times | 29° /25° | 8.5 mm | 7 | |
| 14 Sept. | Moderate or heavy rain shower | 27° /23° | 27.2 mm | 6 | |
| 15 Sept. | Cloudy | 28° /24° | 23.6 mm | 6 | |
| 16 Sept. | Torrential rain shower | 27° /23° | 39.9 mm | 6 | |
| 17 Sept. | Light rain shower | 28° /24° | 14.2 mm | 6 | |
| 18 Sept. | Light rain shower | 28° /24° | 18 mm | 6 | |
| 19 Sept. | Light rain shower | 28° /25° | 19.1 mm | 6 | |
| 20 Sept. | Light rain shower | 28° /24° | 10.3 mm | 6 | |
| 21 Sept. | Patchy rain possible | 28° /24° | 6.5 mm | 6 | |
| 22 Sept. | Moderate rain | 27° /24° | 18.6 mm | 6 | |
| 23 Sept. | Patchy light rain | 29° /24° | 4.6 mm | 6 | |
| 24 Sept. | Light rain shower | 30° /25° | 7.3 mm | 7 | |
| 25 Sept. | Patchy light rain with thunder | 29° /25° | 14 mm | 7 | |
| 26 Sept. | Light rain shower | 27° /24° | 49.2 mm | 6 | |
| 27 Sept. | Moderate or heavy rain shower | 30° /25° | 3.5 mm | 7 | |
| 28 Sept. | Thundery outbreaks possible | 30° /24° | 3.2 mm | 7 | |
| 29 Sept. | Thundery outbreaks possible | 29° /25° | 1.1 mm | 7 | |
| 30 Sept. | Patchy light rain with thunder | 30° /25° | 5.9 mm | 7 | |
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Important Notice
Our weather forecast for Bissau 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 Bissau forecast closer to your planned date for the most up-to-date weather information.
Bissau in September - FAQ
What are the expected maximum and minimum temperatures in Bissau during September?
During September, expect a variety of temperatures with highs around 28° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Bissau during September?
Significant rainfall exceeding 505.5 mm is expected in Bissau during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bissau during September?
The average wind speed in Bissau during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Bissau in September?
As you prepare for your trip to Bissau 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 Bissau, 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 Bissau
Explore the daily rainfall trends and prepare for Bissaus September weather 💧
UV exposure in Bissau during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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