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Weather in Lille for September 2025

Your guide to Lille weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Yellow Violent Wind Vigilance - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Lille is slightly cooler than the historical average by -1.3 °C.

  • The forecast for the next days in Lille predicts a temperature of 19 °C, which is cooler than the historical average.

  • In general, the average temperature in Lille at the beginning of September is 25.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16 °C by the end of September.

    • Rain 🌧️

  • Lille experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 73.1 mm.

    • More

  • Is September a good time to visit Lille? check out the best time to travel to Lille page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
8
Dry days
Average rainy days
22
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/13°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
67 %
Avg humidity

Lille Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
25°
2
Sunny
25°
3
Sunny
24°
4
Partly cloudy
25°
5
Partly cloudy
25°
6
Overcast
26°
7
Sunny
28°
8
Sunny
25°
9
Overcast
23°
10
Patchy rain possible
24°
11
Overcast
21°
12
Light rain shower
22°
13
Sunny
20°
14
Partly cloudy
21°
15
Partly cloudy
22°
16
Weather Alert Patchy rain possible
19°
17
Patchy rain possible
21°
18
Sunny
26°
19
Partly cloudy
31°
20
Patchy rain possible
21°
21
Patchy rain possible
19°
22
Patchy rain possible
18°
23
Patchy rain possible
16°
24
Patchy rain possible
16°
25
Patchy rain possible
15°
26
Patchy rain possible
16°
27
Partly cloudy
17°
28
Overcast
17°
29
Patchy rain possible
14°
30
Sunny
17°

Temperatures trend during September in Lille

See the weather trend as well as the moving average line

September weather in Lille day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 25° /14° 9.3 mm 6
2 Sept. Sunny
Sunny
 25° /14° 2.2 mm 6
3 Sept. Sunny
Sunny
 24° /14° 0.7 mm 6
4 Sept. Partly cloudy
Partly cloudy
 25° /14° 0.2 mm 6
5 Sept. Partly cloudy
Partly cloudy
 25° /14° 1.2 mm 6
6 Sept. Overcast
Overcast
 26° /15° 2.7 mm 6
7 Sept. Sunny
Sunny
 28° /14° 2.2 mm 7
8 Sept. Sunny
Sunny
 25° /15° 1.8 mm 6
9 Sept. Overcast
Overcast
 23° /15° 1.4 mm 5
10 Sept. Patchy rain possible
Patchy rain possible
 24° /15° 1.2 mm 5
11 Sept. Overcast
Overcast
 21° /13° 1.6 mm 5
12 Sept. Light rain shower
Light rain shower
 22° /11° 0.8 mm 5
13 Sept. Sunny
Sunny
 20° /12° 3.4 mm 5
14 Sept. Partly cloudy
Partly cloudy
 21° /12° 6.2 mm 5
15 Sept. Partly cloudy
Partly cloudy
 22° /11° 0 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
 19° /13° 0.6 mm 0.8
17 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 0.6 mm 0.5
18 Sept. Sunny
Sunny
 26° /15° 0 mm 1.1
19 Sept. Partly cloudy
Partly cloudy
 31° /15° 0 mm 1
20 Sept. Patchy rain possible
Patchy rain possible
 21° /14° 1.9 mm 0.4
21 Sept. Patchy rain possible
Patchy rain possible
 19° /12° 0.5 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 18° /9° 0.3 mm 3
23 Sept. Patchy rain possible
Patchy rain possible
 16° /9° 0.8 mm 3
24 Sept. Patchy rain possible
Patchy rain possible
 16° /9° 1.7 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 15° /10° 1.4 mm 3
26 Sept. Patchy rain possible
Patchy rain possible
 16° /12° 0.6 mm 3
27 Sept. Partly cloudy
Partly cloudy
 17° /9° 0 mm 4
28 Sept. Overcast
Overcast
 17° /9° 0 mm 3
29 Sept. Patchy rain possible
Patchy rain possible
 14° /11° 0.2 mm 3
30 Sept. Sunny
Sunny
 17° /8° 1.9 mm 5
Next
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.
Change Month
‹
›

Lille weather in September vs August vs October

Compare September weather in Lille with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures24°/15°21°/13°17°/10°
Rainfall52 mm73 mm79 mm
Wind18.6 km/h17.9 km/h20.7 km/h
Humidity65%67%74%
Rainy days22 days22 days23 days
Dry days9 days8 days8 days

Planning a trip to Lille? Discover the best time to visit

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 ☀️

Quick links

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Location coordinates Where is Lille?

Get accurate weather forecasts for Lille, located at latitude 50.633 and longitude 3.059. Stay updated with localized weather information tailored for Lille.

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