Wallonia (Charleroi)
September
Weather in Wallonia for September 2025
Your guide to Wallonia weather in September - trends and predictions
In general, the average temperature in Wallonia at the beginning of September is 24.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.7 °C by the end of September.
Wallonia experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 77.7 mm.
Is September a good time to visit Wallonia? check out the best time to travel to Wallonia page.
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Temperatures
Rain 🌧️
More
5
Dry days
25
Rainy days
0
Snow days
20°/12°
Temperatures
18 km/h
Avg max wind
74 %
Avg humidity
Wallonia in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  25° | 3 24° | 4 25° | 5  25° | 6  25° | 7 26° |
| 8 25° | 9  22° | 10  22° | 11 20° | 12 21° | 13 19° | 14 19° |
| 15 21° | 16 19° | 17 20° | 18  20° | 19 20° | 20 19° | 21 19° |
| 22 19° | 23 19° | 24 17° | 25 18° | 26 18° | 27 17° | 28 15° |
| 29 16° | 30 16° |
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Temperatures trend during September in Wallonia
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. | Sunny | 24° /13° | 8.2 mm | 6 | |
| 2 Sept. | Patchy rain possible | 25° /14° | 1.3 mm | 6 | |
| 3 Sept. | Sunny | 24° /13° | 0.5 mm | 6 | |
| 4 Sept. | Sunny | 25° /13° | 0.3 mm | 6 | |
| 5 Sept. | Moderate rain at times | 25° /14° | 4.2 mm | 6 | |
| 6 Sept. | Partly cloudy | 25° /15° | 5 mm | 6 | |
| 7 Sept. | Sunny | 26° /14° | 1.5 mm | 7 | |
| 8 Sept. | Sunny | 25° /15° | 3.2 mm | 6 | |
| 9 Sept. | Overcast | 22° /14° | 2.6 mm | 5 | |
| 10 Sept. | Heavy rain at times | 22° /14° | 3.9 mm | 5 | |
| 11 Sept. | Patchy rain possible | 20° /12° | 2.8 mm | 5 | |
| 12 Sept. | Patchy rain possible | 21° /10° | 0.2 mm | 5 | |
| 13 Sept. | Partly cloudy | 19° /11° | 4.5 mm | 5 | |
| 14 Sept. | Moderate rain at times | 19° /11° | 7.6 mm | 5 | |
| 15 Sept. | Heavy rain at times | 21° /11° | 1.3 mm | 5 | |
| 16 Sept. | Patchy rain possible | 19° /10° | 1.1 mm | 5 | |
| 17 Sept. | Patchy rain possible | 20° /12° | 2.2 mm | 5 | |
| 18 Sept. | Cloudy | 20° /11° | 1.3 mm | 5 | |
| 19 Sept. | Patchy rain possible | 20° /11° | 0.3 mm | 5 | |
| 20 Sept. | Cloudy | 19° /10° | 0.1 mm | 4 | |
| 21 Sept. | Partly cloudy | 19° /9° | 2.7 mm | 5 | |
| 22 Sept. | Sunny | 19° /9° | 1 mm | 5 | |
| 23 Sept. | Patchy rain possible | 19° /9° | 2.6 mm | 4 | |
| 24 Sept. | Patchy rain possible | 17° /10° | 2 mm | 4 | |
| 25 Sept. | Partly cloudy | 18° /10° | 4.5 mm | 4 | |
| 26 Sept. | Patchy rain possible | 18° /11° | 4.8 mm | 5 | |
| 27 Sept. | Heavy rain at times | 17° /9° | 4.3 mm | 4 | |
| 28 Sept. | Patchy rain possible | 15° /8° | 1.5 mm | 4 | |
| 29 Sept. | Moderate or heavy rain shower | 16° /7° | 1.3 mm | 4 | |
| 30 Sept. | Sunny | 16° /7° | 1 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Wallonia 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 Wallonia forecast closer to your planned date for the most up-to-date weather information.
Wallonia in September - FAQ
What are the expected maximum and minimum temperatures in Wallonia during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Wallonia during September?
Moderate rainfall is anticipated in Wallonia during September, with a total of 77.7 mm spread over approximately 25 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Wallonia during September?
The average wind speed in Wallonia during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Wallonia in September?
As you prepare for your trip to Wallonia 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 Wallonia, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Wallonia
Explore the daily rainfall trends and prepare for Wallonias September weather 💧
UV exposure in Wallonia during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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