Lille Weather in September
During September, Lille experiences pleasant daytime temperatures of 21°C (70°F) and cooler nights around 12°C (54°F). Some rainfall is typical during this period.
Rainfall in Lille in September
Historically, the month has about 15 days of rain, averaging 59 mm (2.3 in) in total. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Lille in September
Lille in September has perfect weather. Days reach 21°C (70°F) and nights cool to 12°C (54°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in Lille in September
The area enjoys a balanced 152 hours of sunlight, ensuring it's neither too overcast nor too sunny.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Lille.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit France, check out our Lille's climate page.
Lille Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
21°C (70°F)
Chance of Rain
49%
Precipitation
59 mm (2.3 in)
Rainy days
15 days
Humidity
83%
Sunshine
152 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lille typically stay consistent throughout September, with daily highs averaging around 21°C (70°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 13°C (55°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Lille in September
Browse day-by-day weather records for Lille spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Lille historical weather extremes in September
The extremes listed below come from historical weather data collected in Lille from 1976 through 2025.
- The hottest September day on record in Lille reached 35°C (95°F) (September 15, 2020).
- The coldest September day was on September 24, 1984, with a maximum of 10°C (50°F).
- The lowest overnight temperature recorded in September was 1°C (34°F) (September 23, 1979).
- The heaviest September precipitation occurred on September 28, 1993, when 34 mm (1.3 in) of precipitation fell.
Best Places in France in September
Find out more about the weather in France and which places have the best travel conditions in this month. See all of France in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Lille in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Lille in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit France, check out our Lille's climate page.
Temperature Rainfall Sunshine Humidity
See the full Lille climate overview or explore weather in France.
