September Weather in Kortrijk, Belgium

Last updated: August 21, 2025

September in Kortrijk, Belgium, is characterized by a diverse range of temperatures and a notable level of humidity. With maximum temperatures reaching 31°C (89°F) and an average of 16°C (61°F), the month showcases a warm and inviting atmosphere. However, nighttime can bring cooler moments, with temperatures dipping as low as 5°C (41°F). The city experiences a total precipitation of 52 mm (2.1 in) over 9 days, making it a month of occasional showers amidst sunny spells. Humidity levels hover around 82%, adding to the overall freshness of the air. This blend of warmth, coolness, and moisture creates a unique experience for visitors and locals alike, perfect for enjoying the vibrant early autumn in Kortrijk.

September Temperature in Kortrijk

In September, Kortrijk, Belgium, experiences a delightful transition into early autumn, characterized by mild temperatures that invite outdoor exploration. With lows around 5°C (41°F) and averages reaching 16°C (61°F), the city enjoys a gentle warmth, while highs can soar to 31°C (89°F), reminiscent of the lingering summer heat. This month marks a noticeable dip from the sweltering highs of July and August, offering a more temperate climate perfect for leisurely strolls through the vibrant streets and scenic parks. As days grow shorter and nights cool, September in Kortrijk is a charming prelude to the crispness of fall, making it an ideal time to bask in the beauty of the changing seasons.

September Weather in Kortrijk: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Kortrijk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kortrijk, September typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec404246505664666660554643
Data source: Temperature data for Kortrijk generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Kortrijk

September in Kortrijk sees a modest precipitation level of 52 mm (2.1 in), marking a slight decrease from the wetter summer months. With only 9 days of rainfall, it indicates a transition towards drier conditions, as the city prepares for the autumn season. This drop in both amount and frequency of rain aligns with typical weather patterns, where the lushness of summer gives way to a more tempered climate. Interestingly, while August experienced the peak with 75 mm (3.0 in), September's rainfall helps to maintain sufficient soil moisture as the landscape shifts. Overall, this month acts as a gentle bridge into the wetter days ahead, particularly with October anticipating 84 mm (3.3 in) of rainfall.

September Precipitation Trends in Kortrijk

The chart displays monthly precipitation patterns in Kortrijk, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Kortrijk, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec676567375861557552845898
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Kortrijk

In September, humidity in Kortrijk, Belgium settles at a comfortable 82%, reflecting a slight increase from the drier summer months. As the weather transitions from the warmth of August, which boasts the year's lowest humidity at 76%, September's levels signal the approach of autumn, where moisture in the air begins to rise once more. This trend continues into the fall, with October seeing humidity climb back up to 89%. Overall, the humidity in Kortrijk displays a clear seasonality, starting high in winter and gradually tapering down through the summer, only to rise again in the fall and winter months.

September Average Humidity in Kortrijk

This chart illustrates the average monthly humidity levels in Kortrijk, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Kortrijk is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%85%82%82%80%76%82%89%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kortrijk

As the seasons transition in September, Kortrijk experiences a moderate UV Index of 5, encouraging outdoor enthusiasts to enjoy the lingering warmth while being mindful of sun exposure. This month marks a shift from the very high UV conditions noted in summer, promoting a safer sun experience with an average burn time of 30 minutes. Compared to the earlier months of the year, where the UV Index hovered around lower levels, this late summer signal reminds us that UV rays remain potent even as autumn approaches. With the sun's intensity gradually decreasing, September presents a fitting opportunity to bask in the outdoors responsibly. For more insights, check out the full details on the Kortrijk UV Index.

Maximum UV Index Levels in Kortrijk for September

The chart shows the monthly maximum UV Index (UVI) for Kortrijk in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Kortrijk typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Kortrijk September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Kortrijk

As the summer fades and the golden hues of autumn begin to paint the landscape, September in Kortrijk, Belgium still shines brightly with an impressive 319 hours of sunshine. This month marks a gentle transition, as daylight remains abundant but does taper off from the peak summer months of June and July, which basked in over 400 hours each. September retains a vibrant glow, especially when compared to the cooler months ahead, such as October with its 244 hours. The gradual decrease in sunshine hours reflects the shifting seasons, inviting locals and visitors alike to cherish the lingering warmth and breathtaking views before autumn fully sets in.

Monthly Sunshine Duration in Kortrijk: September Highlighted

The September sunshine duration represents the total number of hours Kortrijk experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec119h198h268h344h394h402h413h379h319h244h196h150h
Data source: Kortrijk September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kortrijk During September

In September, Kortrijk experiences a moderate likelihood of sunshine, with a 36% chance of clear skies. This marks a slight increase from the summer months, suggesting that while the warm days of August may be fading, there's still ample opportunity to enjoy some sun. As autumn approaches, the chance of sunny weather dips compared to the spring peak of 51% in April, but it's still more favorable than the dreary winter months ahead. Overall, September offers a pleasant balance where residents and visitors can relish the last touches of summer sunshine before the chill sets in.

Percentage of Sunny Days in September in Kortrijk

The chart illustrates the percentage of sunny days in Kortrijk throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Kortrijk experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec13%29%40%51%34%32%35%32%36%34%23%16%
Data source: Kortrijk September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kortrijk in September

In September, daylight in Kortrijk, Belgium begins to wane as summer's vibrant days give way to the crispness of autumn. With approximately 12 hours of sunlight, September marks a transition from the longer days of June and July, which boast a peak of 16 hours. This month signifies a gentle decline, following the beautiful 15 hours of daylight in May, as daylight diminishes steadily towards the colder months. The trend showcases how sunlight ebbs and flows throughout the year, reminding us to savor the last warm rays before October's shorter days, with only 10 hours of daylight ahead.

Average Daylight Hours in Kortrijk for September

The chart illustrates the variation in daylight duration in Kortrijk throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 31m10h 2m11h 55m13h 50m15h 31m16h 23m15h 55m14h 25m12h 34m10h 39m8h 56m8h 2m
Data source: Kortrijk daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Kortrijk

As summer gracefully fades into autumn, September in Kortrijk experiences a gentle shift in its winds, with an average speed of 3.0 m/s (7 mph). This marks the month with the lowest wind activity since June, reflecting a calm interlude before the brisk gusts of fall begin to sweep in. Comparatively, September's wind is notably lighter than the earlier summer months, where it hovered around 3.3 to 3.4 m/s (7 to 8 mph). However, as the leaves start to change and the chill in the air becomes more pronounced, wind speeds will soon climb back up in October, reaching an average of 4.1 m/s (9 mph). This evolving pattern indicates a transition not only in meteorological conditions but also in the vibrant tapestry of life in Kortrijk, where the whispers of the September breeze invite contemplation and anticipation for the coming seasons.

Average September Wind Speed in Kortrijk

The chart displays monthly wind speed patterns in Kortrijk, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.04.44.03.44.12.83.33.43.0 m/s4.13.24.0
Data source: Kortrijk September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Kortrijk Compares to Other Months

Weather in Kortrijk varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Kortrijk, focusing on differences in temperature, rainfall, humidity, and UV levels.

September and January in Kortrijk present distinctly contrasting weather patterns. In September, temperatures range from a mild 5°C (41°F) at night to a warm 31°C (89°F) during the day, with an average of 16°C (61°F). The month experiences about 52 mm of precipitation over 9 days, coupled with relatively high humidity at 82%. Conversely, January brings much colder conditions, with temperatures dropping to a minimum of -6°C (22°F) and averaging just 4°C (40°F), peaking at 15°C (58°F). The precipitation increases to 67 mm over 11 days, while humidity rises slightly to 91%. For a more detailed look at January weather, you can visit Kortrijk weather in January.

In comparing the weather of September and February, September offers a much warmer climate, with average temperatures ranging from 5°C (41°F) to a maximum of 31°C (89°F), while February sees colder conditions with temperatures typically between -8°C (18°F) and a maximum of 18°C (65°F). Precipitation levels are relatively similar, with September receiving about 52 mm (2.1 in) over 9 days and February experiencing slightly more rain at 65 mm (2.6 in) across 12 days. Additionally, February has higher humidity levels at 89% compared to September's 82%. For a more detailed look at February weather patterns, visit Kortrijk weather in February.

When comparing the weather in September and March, we see notable differences. September generally boasts warmer temperatures, with a minimum of 5°C (41°F), an average of 16°C (61°F), and a maximum of 31°C (89°F), accompanied by relatively lower humidity at 82%. In contrast, March experiences cooler temperatures, with a minimum of -7°C (20°F), an average of 8°C (46°F), and a maximum of 22°C (72°F), along with increased humidity at 87%. Additionally, March tends to have more precipitation, totaling 67 mm (2.6 in) over 14 days compared to September's 52 mm (2.1 in) over 9 days. For a more detailed look at March weather, you can visit Kortrijk weather in March.

When comparing the weather in September and April, notable differences emerge. September typically offers a warmer climate with average temperatures around 16°C (61°F) and a maximum of 31°C (89°F), while April's temperatures are cooler, averaging 10°C (51°F) with a maximum of 26°C (79°F). Additionally, September experiences slightly more precipitation, totaling 52 mm (2.1 in) over about 9 days, compared to April's 37 mm (1.4 in) across 8 days. Humidity levels are also comparable, with September at 82% and April slightly higher at 85%. For a detailed look at April's weather, check out Kortrijk weather in April.

In comparing the weather of September and May, we see some notable differences. September typically features a wider temperature range, with minimums around 5°C (41°F) and maximums peaking at 31°C (89°F), leading to an average of 16°C (61°F). In contrast, May starts off cooler, with minimum temperatures around 1°C (34°F) and average highs of 29°C (84°F), resulting in an average of 14°C (57°F). Both months experience similar humidity levels at 82%, but September has slightly less precipitation, averaging 52 mm (2.1 in) over about 9 days, compared to May's 58 mm (2.3 in) over 11 days. For more details on May weather, you can visit Kortrijk weather in May.

When comparing the weather in September and June, we see that both months have similar humidity levels at 82%, creating a relatively humid atmosphere. However, September tends to be slightly cooler, with an average temperature of 16°C (61°F) compared to June's average of 18°C (64°F). The maximum temperatures are also similar, reaching 31°C (89°F) in September and 32°C (91°F) in June. Precipitation is slightly higher in June, with 61 mm (2.4 in) compared to September's 52 mm (2.1 in), although both months experience rainfall on about 9 days. For a more detailed look at June weather, you can visit Kortrijk weather in June.

When comparing the weather in September to that of July, we notice several distinct differences. September offers a broader range in temperature, with minimums around 5°C (41°F) and maximums reaching up to 31°C (89°F), culminating in an average of 16°C (61°F). In contrast, July tends to be warmer overall, with minimum temperatures at 8°C (47°F) and maximums soaring to 39°C (102°F), averaging 19°C (66°F). Precipitation levels are quite similar, with September receiving 52 mm (2.1 in) over 9 days, while July experiences slightly higher rainfall at 55 mm (2.2 in) across 10 days. Both months have high humidity, but September edges out just slightly with 82% compared to July's 80%. For a deeper dive into July's weather specifics, you can visit Kortrijk weather in July.

In comparing the weather between August and September, we notice a significant drop in temperature, with September averaging 16°C (61°F) compared to August's 19°C (66°F). While August experiences warmer maximum temperatures of up to 36°C (97°F), September's highs reach 31°C (89°F), indicating a gradual transition into cooler days. Precipitation is more frequent in August, occurring over 13 days with a total of 75 mm (3.0 in), while September sees less rain at 52 mm (2.1 in) over 9 days. Furthermore, humidity is slightly higher in September at 82% compared to August's 76%. For more detailed information, check out Kortrijk weather in August.

In September, the weather features a broader temperature range, with minimums around 5°C (41°F) and highs reaching up to 31°C (89°F). The average temperature hovers at 16°C (61°F), accompanied by moderate humidity at 82% and a total precipitation of 52 mm (2.1 in) over 9 days. In contrast, October experiences cooler temperatures, with minimums dropping to 2°C (35°F) and an average of 13°C (55°F), while maximums reach up to 25°C (76°F). This month sees increased rainfall, accumulating 84 mm (3.3 in) over 13 days, and humidity rises slightly to 89%. For more details about October weather, check out Kortrijk weather in October.

September and November exhibit notable differences in weather conditions. In September, temperatures range from a relatively mild minimum of 5°C (41°F) to a warm maximum of 31°C (89°F), with an average temperature of 16°C (61°F). The month typically experiences 52 mm (2.1 in) of precipitation over about 9 days, alongside a humidity level of 82%. In contrast, November brings a colder climate, with temperatures ranging from a chilly minimum of -1°C (30°F) to a comfortable maximum of 19°C (66°F), averaging just 8°C (46°F). It also sees slightly more precipitation at 58 mm (2.3 in) across 12 days, coupled with an increase in humidity to 92%. For more detailed information on November weather, check out Kortrijk weather in November.

September and December weather in Kortrijk present a stark contrast. In September, temperatures range from a mild 5°C (41°F) to a warm 31°C (89°F), with an average of 16°C (61°F), while December brings a chillier atmosphere with temperatures dropping to a minimum of -4°C (26°F) and peaking at 15°C (58°F), averaging just 6°C (43°F). Furthermore, September enjoys lower precipitation at 52 mm (2.1 in) across 9 rainy days, whereas December sees significantly more rainfall, totaling 97 mm (3.8 in) over 17 days. Humidity levels also rise from 82% in September to a higher 92% in December, adding to the cold season's dampness. For a closer look at December weather specifics, visit Kortrijk weather in December.

Compare Kortrijk's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Kortrijk

As summer gracefully gives way to autumn, September in Kortrijk showcases a unique blend of warmth and crispness. With temperatures ranging from pleasantly mild days to cooler nights, this month offers a refreshing contrast to the sweltering heat of July and August. While occasional rainfall—tallying about nine days—adds a touch of moisture to the air, the overall humidity remains elevated, creating a cozy atmosphere. This transitional month invites locals and visitors alike to enjoy the changing scenery and the rich hues of early fall. For more detailed insights into the region's weather patterns, check out Kortrijk Climate.