Lille
September
Weather in Lille for September 2025
Your guide to Lille weather in September - trends and predictions
In general, the average temperature in Lille at the beginning of September is 25.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18 °C by the end of September.
Lille experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 73.1 mm.
Is September a good time to visit Lille? check out the best time to travel to Lille page.
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Temperatures
Rain 🌧️
More
8
Dry days
22
Rainy days
0
Snow days
21°/13°
Temperatures
18 km/h
Avg max wind
67 %
Avg humidity
Lille in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  25° | 2 26° | 3 25° | 4  25° | 5 26° | 6 26° | 7 27° |
| 8 26° | 9  23° | 10  24° | 11 22° | 12 22° | 13 20° | 14 21° |
| 15 22° | 16 21° | 17 21° | 18 22° | 19 21° | 20 21° | 21 21° |
| 22 20° | 23  19° | 24 19° | 25 19° | 26 19° | 27  18° | 28 17° |
| 29 17° | 30 17° |
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Temperatures trend during September in Lille
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 | 25° /14° | 11.5 mm | 7 | |
| 2 Sept. | Sunny | 26° /14° | 2 mm | 6 | |
| 3 Sept. | Sunny | 25° /14° | 0.4 mm | 6 | |
| 4 Sept. | Partly cloudy | 25° /14° | 0 mm | 6 | |
| 5 Sept. | Partly cloudy | 26° /15° | 1.5 mm | 6 | |
| 6 Sept. | Partly cloudy | 26° /16° | 3.4 mm | 6 | |
| 7 Sept. | Sunny | 27° /15° | 2.6 mm | 7 | |
| 8 Sept. | Sunny | 26° /16° | 2.3 mm | 6 | |
| 9 Sept. | Overcast | 23° /15° | 1.7 mm | 6 | |
| 10 Sept. | Patchy rain possible | 24° /15° | 1.5 mm | 6 | |
| 11 Sept. | Overcast | 22° /13° | 1.1 mm | 5 | |
| 12 Sept. | Partly cloudy | 22° /12° | 0.2 mm | 5 | |
| 13 Sept. | Sunny | 20° /12° | 3.2 mm | 5 | |
| 14 Sept. | Partly cloudy | 21° /13° | 7.6 mm | 5 | |
| 15 Sept. | Partly cloudy | 22° /11° | 0 mm | 6 | |
| 16 Sept. | Overcast | 21° /12° | 1.6 mm | 5 | |
| 17 Sept. | Patchy rain possible | 21° /13° | 0.5 mm | 5 | |
| 18 Sept. | Partly cloudy | 22° /13° | 1.2 mm | 5 | |
| 19 Sept. | Partly cloudy | 21° /13° | 0 mm | 5 | |
| 20 Sept. | Patchy rain possible | 21° /12° | 0.3 mm | 5 | |
| 21 Sept. | Overcast | 21° /11° | 4.9 mm | 5 | |
| 22 Sept. | Light rain shower | 20° /10° | 2.9 mm | 5 | |
| 23 Sept. | Cloudy | 19° /10° | 2.9 mm | 5 | |
| 24 Sept. | Patchy rain possible | 19° /11° | 2.2 mm | 5 | |
| 25 Sept. | Patchy rain possible | 19° /11° | 3.9 mm | 5 | |
| 26 Sept. | Patchy rain possible | 19° /13° | 5.5 mm | 5 | |
| 27 Sept. | Moderate or heavy rain shower | 18° /11° | 4.5 mm | 4 | |
| 28 Sept. | Patchy rain possible | 17° /9° | 0.5 mm | 4 | |
| 29 Sept. | Moderate rain at times | 17° /9° | 1.2 mm | 4 | |
| 30 Sept. | Sunny | 17° /8° | 1.9 mm | 5 | |
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Important Notice
Our weather forecast for Lille 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 Lille forecast closer to your planned date for the most up-to-date weather information.
Lille in September - FAQ
What are the expected maximum and minimum temperatures in Lille during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Lille during September?
Moderate rainfall is anticipated in Lille during September, with a total of 73.1 mm spread over approximately 22 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Lille during September?
The average wind speed in Lille during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Lille in September?
As you prepare for your trip to Lille 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 Lille, 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
September rainfall patterns in Lille
Explore the daily rainfall trends and prepare for Lilles September weather 💧
UV exposure in Lille during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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