Tournai
September
Weather in Tournai for September 2025
Your guide to Tournai weather in September - trends and predictions
Yellow Flood Vigilance - See hour by hour.
Until now, September 2025 in Tournai is slightly cooler than the historical average by -1.4 °C.
The forecast for the next days in Tournai predicts a temperature of 19.3 °C, which is cooler than the historical average.
In general, the average temperature in Tournai at the beginning of September is 25.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17 °C by the end of September.
Tournai experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 74.6 mm.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
7
Dry days
23
Rainy days
0
Snow days
21°/12°
Temperatures
18 km/h
Avg max wind
70 %
Avg humidity
Tournai Weather September
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Temperatures trend during September in Tournai
See the weather trend as well as the moving average line
September weather in Tournai day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 25° /14° | 8.6 mm | 6 | |
| 2 Sept. |  Patchy rain possible | 25° /14° | 1.8 mm | 6 | |
| 3 Sept. |  Sunny | 24° /14° | 0.9 mm | 6 | |
| 4 Sept. | Sunny | 25° /13° | 0.1 mm | 6 | |
| 5 Sept. | Patchy rain possible | 26° /14° | 1.8 mm | 6 | |
| 6 Sept. |  Overcast | 26° /14° | 4 mm | 6 | |
| 7 Sept. | Patchy rain possible | 28° /14° | 2 mm | 7 | |
| 8 Sept. | Sunny | 25° /15° | 2.4 mm | 6 | |
| 9 Sept. | Patchy rain possible | 23° /14° | 1.5 mm | 5 | |
| 10 Sept. | Patchy rain possible | 24° /14° | 1.5 mm | 5 | |
| 11 Sept. | Patchy rain possible | 22° /13° | 2 mm | 5 | |
| 12 Sept. | Patchy rain possible | 22° /11° | 0.1 mm | 5 | |
| 13 Sept. | Patchy rain possible | 19° /12° | 3.5 mm | 0.7 | |
| 14 Sept. | Patchy rain possible | 21° /10° | 0.2 mm | 1 | |
| 15 Sept. | Patchy rain possible | 21° /15° | 0.8 mm | 1 | |
| 16 Sept. | Patchy rain possible | 19° /13° | 2.7 mm | 0.7 | |
| 17 Sept. |  Moderate rain | 19° /13° | 6.8 mm | 0.1 | |
| 18 Sept. | Overcast | 20° /14° | 0 mm | 4 | |
| 19 Sept. | Patchy rain possible | 21° /13° | 0 mm | 4 | |
| 20 Sept. | Partly cloudy | 28° /16° | 0 mm | 6 | |
| 21 Sept. | Patchy rain possible | 21° /13° | 0.4 mm | 4 | |
| 22 Sept. | Patchy rain possible | 15° /11° | 2.5 mm | 3 | |
| 23 Sept. | Patchy rain possible | 15° /9° | 2.8 mm | 3 | |
| 24 Sept. | Patchy rain possible | 16° /9° | 1.4 mm | 3 | |
| 25 Sept. | Sunny | 17° /7° | 0 mm | 4 | |
| 26 Sept. | Sunny | 18° /8° | 0 mm | 4 | |
| 27 Sept. |  Moderate or heavy rain shower | 18° /10° | 4.4 mm | 4 | |
| 28 Sept. | Overcast | 16° /9° | 0.7 mm | 4 | |
| 29 Sept. | Patchy rain possible | 17° /8° | 1.1 mm | 4 | |
| 30 Sept. | Sunny | 17° /8° | 1.8 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Tournai 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 Tournai forecast closer to your planned date for the most up-to-date weather information.
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Tournai in September - FAQ
What are the expected maximum and minimum temperatures in Tournai during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Tournai during September?
Moderate rainfall is anticipated in Tournai during September, with a total of 74.6 mm spread over approximately 23 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Tournai during September?
The average wind speed in Tournai during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Tournai
Explore the daily rainfall trends and prepare for Tournais September weather 💧
UV exposure in Tournai during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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