Leuven
September
Weather in Leuven for September 2025
Your guide to Leuven weather in September - trends and predictions
In general, the average temperature in Leuven at the beginning of September is 25.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.1 °C by the end of September.
Leuven sees moderate rainfall in September, averaging 8 rainy days.
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22
Dry days
8
Rainy days
0
Snow days
23°/14°
Temperatures
18 km/h
Avg max wind
69 %
Avg humidity
Leuven in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2 26° | 3  24° | 4  23° | 5 25° | 6 25° | 7 28° |
| 8 26° | 9 23° | 10 23° | 11 22° | 12  19° | 13  18° | 14 19° |
| 15  22° | 16 22° | 17 23° | 18 24° | 19 22° | 20 23° | 21 22° |
| 22 20° | 23 18° | 24 18° | 25 18° | 26 20° | 27 19° | 28 17° |
| 29 18° | 30 17° |
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Temperatures trend during September in Leuven
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. | Light rain shower | 25° /15° | 20.8 mm | 7 | |
| 2 Sept. | Patchy rain possible | 26° /16° | 3.1 mm | 6 | |
| 3 Sept. | Mist | 24° /16° | 0.1 mm | 5 | |
| 4 Sept. | Sunny | 23° /13° | 1 mm | 6 | |
| 5 Sept. | Sunny | 25° /15° | 6.3 mm | 6 | |
| 6 Sept. | Sunny | 25° /15° | 0.8 mm | 6 | |
| 7 Sept. | Sunny | 28° /14° | 0.6 mm | 7 | |
| 8 Sept. | Sunny | 26° /15° | 2.2 mm | 7 | |
| 9 Sept. | Sunny | 23° /15° | 4.2 mm | 6 | |
| 10 Sept. | Sunny | 23° /15° | 0.9 mm | 6 | |
| 11 Sept. | Patchy rain possible | 22° /13° | 4.2 mm | 5 | |
| 12 Sept. | Cloudy | 19° /11° | 1.4 mm | 4 | |
| 13 Sept. | Overcast | 18° /9° | 1.1 mm | 5 | |
| 14 Sept. | Cloudy | 19° /11° | 0 mm | 5 | |
| 15 Sept. | Partly cloudy | 22° /10° | 0 mm | 5 | |
| 16 Sept. | Sunny | 22° /12° | 0.5 mm | 6 | |
| 17 Sept. | Light rain shower | 23° /14° | 1 mm | 5 | |
| 18 Sept. | Overcast | 24° /14° | 0.6 mm | 6 | |
| 19 Sept. | Patchy rain possible | 22° /12° | 0.1 mm | 6 | |
| 20 Sept. | Partly cloudy | 23° /13° | 0 mm | 6 | |
| 21 Sept. | Light rain shower | 22° /12° | 5.5 mm | 5 | |
| 22 Sept. | Light rain shower | 20° /12° | 1.6 mm | 5 | |
| 23 Sept. | Patchy rain possible | 18° /11° | 7.4 mm | 4 | |
| 24 Sept. | Partly cloudy | 18° /9° | 1.2 mm | 5 | |
| 25 Sept. | Overcast | 18° /11° | 10 mm | 5 | |
| 26 Sept. | Partly cloudy | 20° /12° | 3.3 mm | 5 | |
| 27 Sept. | Overcast | 19° /11° | 2.3 mm | 4 | |
| 28 Sept. | Mist | 17° /11° | 2.9 mm | 4 | |
| 29 Sept. | Light rain shower | 18° /8° | 0.7 mm | 4 | |
| 30 Sept. | Partly cloudy | 17° /9° | 2.2 mm | 4 | |
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Important Notice
Our weather forecast for Leuven 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 Leuven forecast closer to your planned date for the most up-to-date weather information.
Leuven in September - FAQ
What are the expected maximum and minimum temperatures in Leuven during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Leuven during September?
Moderate rainfall is anticipated in Leuven during September, with a total of 63.1 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Leuven during September?
The average wind speed in Leuven during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Leuven in September?
As you prepare for your trip to Leuven 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 Leuven, 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
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- 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
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