Last updated: February 26, 2025
In September, Lille, France, offers a delightful transition from the warmth of summer to the crispness of autumn. The maximum temperature can reach a pleasant 32°C (89°F), while the average settles around a comfortable 16°C (61°F). As temperatures dip, minimums can drop to 4°C (40°F), making for brisk mornings. This month sees approximately 51 mm (2.0 in) of precipitation spread over 9 days, creating an atmosphere that is both refreshing and vibrant, with humidity levels hovering at 82%. Enjoy the unique charm that Lille presents in September, where every day invites exploration amidst the changing seasons.
As September rolls into Lille, France, the city begins to experience a notable shift in temperatures, marking the transition from the sweltering summer months to the crispness of autumn. With minimums averaging around 4°C (40°F) and maximums rising to a pleasant 32°C (89°F), this month offers a balanced climate that invites outdoor exploration. The average temperature reaches a comfortable 16°C (61°F), making it an ideal time for leisurely strolls through the city's charming parks or vibrant streets. Compared to the hot highs of August, September provides a refreshing respite, while still offering delightful warmth that lingers, perfect for enjoying the rich cultural experiences Lille has to offer. As autumn approaches, the gradual cooling sets the stage for the enchanting changes of the season ahead.
In September, Lille experiences a shift in weather as precipitation levels settle at 51 mm (2.0 in), marking a reduction from the wetter August. This month sees rain on 9 days, offering a balance between sun and showers. Compared to the preceding months, September transitions to milder rainfall patterns, setting the stage for October's more pronounced 82 mm (3.2 in) of precipitation. This trend highlights September as a bridge between the summer’s the heavier rains and the onset of autumn, where occasional drizzles keep the landscape lush while allowing for glimpses of sunny days.
As summer fades into autumn, September in Lille, France, registers a humidity level of 82%, a noticeable shift from the drier conditions of August, which boasted a comfortable 76%. This slight increase hints at the approaching fall season, where humidity levels tend to rise again. Historically, September often serves as a bridge between the warm,-muggy months of summer and the wetter, cooler autumn, reminiscent of the elevated humidity seen in May and June. As the year progresses, humidity gradually creeps back up, reaching 89% in October and climbing to a more humid 92% by the winter months. The rhythmic ebb and flow of humidity not only marks Lille's seasonal shifts but also sets the tone for a cozy advent into autumn.
As summer transitions to autumn in September, Lille experiences a shift in its UV Index, registering at 5—a sign of moderate sun exposure risk. This indicates that while the sun’s rays are still prominent, the burn time extends to 30 minutes, providing a bit more safety for those enjoying the lingering warmth of early fall. Compared to the peak summer months, where indices soared to 8, September offers a welcome reprieve, yet it still encourages mindfulness about sun protection. With the changing seasons, it's essential to stay informed about UV levels. For more detailed information, check Lille UV Index.
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As summer gracefully hands over the reins to autumn, September in Lille shines with a delightful 325 hours of sunshine, setting a warm tone as the days begin to cool. This month continues the trend from the sun-drenched heights of July and August, where residents enjoyed peak sunshine hours, making the transition less abrupt. While September’s sunshine is notably less than the summer months, it remains significantly higher than the gloomier offerings of October and November. The gradual decline in sunlight hours reflects the natural rhythm of the seasons, inviting both locals and visitors to cherish the lingering warmth before the chill of winter settles in. Such vibrant sunshine serves as a perfect backdrop for savoring the cultural tapestry and outdoor activities Lille has to offer.
As September arrives in Lille, France, the likelihood of sunny weather stands at 37%, marking a subtle shift in the seasonal trend post-summer. This month enjoys a moderate chance of sunshine, outperforming the gloomy winter months like January and November, but it doesn't quite reach the higher peaks of spring, particularly April at 52%. Compared to the summer months, which hover around the low to mid-30s, September offers a refreshing glimpse of sun before autumn sets in, making it a delightful time for outdoor activities while the warm days linger. Overall, September presents a pleasant balance of sun and cloud, perfect for enjoying the last vestiges of summer warmth.
As September unfolds in Lille, France, the daylight hours begin to wane, offering a gentle transition into the cozy embrace of autumn. With 12 hours of daylight, the month marks a noticeable shift from the sun-drenched summer, where June peaks at a brilliant 16 hours. This gradual decrease continues from the vibrant 15 hours in July and 14 hours in August, reflecting nature's rhythm as evenings draw in. While September's light lingers longer than the earlier months of January and February, which hover around 8 to 10 hours, it foreshadows the approaching chill as October brings a further reduction to 10 hours. Embracing these changes, the people of Lille can savor the beauty of early autumn, where the rich hues of falling leaves are illuminated by the softer daylight.
As September arrives in Lille, a noticeable shift in wind patterns marks the transition into autumn. With an average wind speed of 2.9 m/s (7 mph), this month experiences the gentlest breezes of the year, reflecting a calm before the seasonal change. Following the slightly breezier months of July and August, September's winds offer a tranquil respite, inviting residents and visitors alike to enjoy the crisp air and vibrant fall colors. Interestingly, October witnesses a resurgence in wind speed, climbing back to 4.1 m/s (9 mph), as if to usher in the more robust gusts of the coming months. This gentle decay in wind intensity during September underscores the gradual shift toward cooler days, hinting at the dramatic atmospheric changes that lie ahead.
The weather in Lille changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Lille and find detailed weather information for every month.
September and January present stark contrasts in weather. In September, temperatures range from a cool 4°C (40°F) at night to a warm 32°C (89°F) during the day, making it a more temperate month with an average of 16°C (61°F). The weather is relatively humid at 82%, with 51 mm (2.0 in) of precipitation spread over about 9 days. In contrast, January is much colder, with temperatures dipping to a minimum of -6°C (22°F) and peaking at just 15°C (59°F), yielding a much cooler average of 5°C (41°F). This midwinter month sees slightly more precipitation, totaling 65 mm (2.6 in) over around 11 days and higher humidity at 91%. For more details on January weather, check Lille weather in January.
September and February display noticeably contrasting weather patterns. In September, temperatures range from a mild 4°C (40°F) at night to a warm average of 16°C (61°F) during the day, peaking at 32°C (89°F). The month sees about 51 mm (2.0 in) of precipitation over approximately 9 days, with humidity lingering around 82%. In contrast, February experiences chillier conditions, with temperatures dipping as low as -8°C (18°F) and averaging only 6°C (43°F), reaching a maximum of 19°C (66°F). This month has a slightly higher precipitation of 59 mm (2.3 in) spread over 12 rainy days, accompanied by even higher humidity at 89%. For more details on February weather, you can check this link: Lille weather in February.
When comparing the weather in September and March, notable contrasts emerge. September generally presents warmer temperatures, with a minimum of 4°C (40°F) and an average of 16°C (61°F), peaking at 32°C (89°F). In contrast, March tends to be cooler, starting with a minimum of -7°C (20°F) and averaging just 8°C (46°F), though it can rise to a maximum of 22°C (72°F). Precipitation levels are also different, with September receiving 51 mm (2.0 in) over about 9 days, while March experiences slightly higher precipitation at 64 mm (2.5 in) across 14 days. Moreover, March exhibits higher humidity at 87%, compared to September's 82%. For more details on March weather, you can check Lille weather in March.
In comparing the weather of September and April, we see notable differences in temperature and precipitation. September generally offers milder conditions with minimum temperatures around 4°C (40°F) and an average of 16°C (61°F), peaking at a warm 32°C (89°F). In contrast, April tends to be cooler, with minimum temperatures dropping to -2°C (28°F) and an average of 10°C (51°F), reaching a maximum of 26°C (78°F). Precipitation levels are slightly higher in September at 51 mm (2.0 in) over about 9 days, compared to April's 36 mm (1.4 in) over 7 days. Humidity remains relatively similar, with September at 82% and April slightly higher at 85%. For more detailed insights on April's weather, you can visit Lille weather in April.
In September, the weather tends to be warmer with temperatures ranging from a chilly 4°C (40°F) at night to a pleasant high of 32°C (89°F) during the day, leading to an average temperature of 16°C (61°F). This month experiences around 51 mm (2.0 in) of precipitation over 9 days. In contrast, May features slightly cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 28°C (83°F), resulting in an average of 13°C (57°F). Precipitation is somewhat higher at 61 mm (2.4 in), occurring over 11 days. Notably, both months share a relatively high humidity level of 82%. For more detailed information, you can check Lille weather in May.
In June, the weather tends to be slightly warmer compared to September, with average temperatures reaching 18°C (64°F) versus September's average of 16°C (61°F). Both months experience similar humidity levels at 82%, but June has a marginally higher maximum temperature of 33°C (91°F) compared to September's 32°C (89°F). While precipitation is slightly higher in June at 60 mm (2.4 in) over 8 days, September sees 51 mm (2.0 in) of rain across 9 days. For more detailed information, you can check Lille weather in June.
When comparing the weather in September to that of July, there are some notable differences. September generally sees a wider temperature range, with minimums dropping to 4°C (40°F) and maximums reaching up to 32°C (89°F). In contrast, July has milder minimum temperatures of 8°C (46°F) and can soar to a maximum of 39°C (103°F). Both months experience similar precipitation levels at around 50-51 mm, but September tends to have slightly fewer rainfall days at 9 compared to July's 10. Humidity is also slightly higher in September at 82%, compared to 80% in July. For a more detailed overview, you can check out Lille weather in July.
In comparing the weather of September to that of August, September experiences cooler temperatures, with a minimum of 4°C (40°F) and an average of 16°C (61°F), while August has higher minimums starting at 8°C (47°F) and an average of 19°C (66°F). Furthermore, the maximum temperature in September reaches 32°C (89°F), which is lower than August's peak of 36°C (98°F). Precipitation also varies, with September receiving 51 mm (2.0 in) over 9 days, compared to August's 71 mm (2.8 in) over 12 days. Interestingly, September has a higher humidity level at 82% compared to August's 76%, indicating a more muggy atmosphere as summer transitions into fall. For more details, check Lille weather in August.
In September, the weather boasts a wider temperature range with minimums at 4°C (40°F) and maximums reaching 32°C (89°F), offering an average of 16°C (61°F). Rainfall during this month totals 51 mm (2.0 in) over about 9 days, and the humidity sits at a moderate 82%. In contrast, October sees cooler conditions with temperatures dipping to a minimum of 2°C (35°F) and a maximum of 25°C (77°F), averaging 13°C (55°F). This month experiences increased precipitation at 82 mm (3.2 in) across 13 days, along with a rise in humidity to 89%. For more detailed insights, check out Lille weather in October.
In September, the weather is generally warmer, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 32°C (89°F) and an average of 16°C (61°F). This month experiences a moderate level of precipitation, averaging 51 mm (2.0 in) over about 9 days, and humidity levels sit around 82%. In contrast, November brings cooler temperatures, with a minimum of -1°C (30°F), an average of 8°C (47°F), and a maximum of 19°C (67°F). This month also records slightly higher precipitation at 56 mm (2.2 in) over approximately 12 days, along with increased humidity at 92%. For more detailed information on November weather patterns, you can check Lille weather in November.
In September, temperatures are relatively mild, with an average of 16°C (61°F) and maximums reaching up to 32°C (89°F), offering warm days and cool nights. However, it experiences a fair amount of rain, with about 51 mm (2.0 in) falling over 9 days, coupled with humidity levels around 82%. In contrast, December brings a chillier climate, with an average temperature of 6°C (43°F) and maximums peaking at 15°C (59°F). This month sees more precipitation, totaling 95 mm (3.8 in) spread over 17 days, alongside increased humidity at 92%. For more detailed information, check out Lille weather in December.
As September arrives in Lille, the weather begins to transition from the warmth of summer to the crispness of autumn. With average temperatures hovering around a comfortable 16°C (61°F), the city experiences noticeably mild days, though the mercury can peak at an impressive 32°C (89°F). However, this month also brings an increase in precipitation, with roughly 9 days of rain contributing to a humidity level that averages 82%. This blend of warm days and cooler evenings signifies a shift, making September a unique time that straddles the exuberance of summer and the serene changes of fall. For a deeper dive into how the climate shapes Lille's atmosphere throughout the year, visit Lille Climate.