September Weather in La Hulpe, Belgium

Last updated: August 21, 2025

Experience the September weather in La Hulpe, Belgium, where temperatures can soar to a maximum of 33°C (91°F) during pleasantly warm days, while the cool evenings can dip to a minimum of 4°C (39°F). The average temperature hovers around a comfortable 15°C (60°F), making it a delightful time for outdoor activities. With 58 mm (2.3 in) of precipitation spread over 10 days, the weather can be somewhat unpredictable, punctuated by the region's characteristic 82% humidity. Embrace the charm of La Hulpe this September, where nature greets you with a tapestry of vibrant colors and refreshing breezes.

September Temperature in La Hulpe

In September, La Hulpe, Belgium, experiences a delightful transition from summer to autumn. With minimum temperatures averaging around 4°C (39°F) and pleasant daily highs reaching up to 33°C (91°F), the month showcases a wonderful blend of warmth and coolness. The average temperature settles at 15°C (60°F), offering a comfortable climate for outdoor activities and exploration. As days shorten and the leaves begin their colorful descent, visitors can enjoy the lingering warmth of summer before the crispness of fall sets in, making September an ideal time to savor the enchanting beauty of this picturesque town.

September Weather in La Hulpe: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in La Hulpe, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Hulpe, 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).
JanFebMarAprMayJunJulAugSepOctNovDec394145505664666660544542
Data source: Temperature data for La Hulpe 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 La Hulpe

In September, La Hulpe experiences a moderate shift in precipitation, accumulating 58 mm (2.3 in) across 10 days of rain. While this marks a drop from the preceding month of August, which recorded a higher 84 mm (3.3 in) of rainfall over 14 days, it still maintains the characteristic variability of early autumn. Typically, September stands out with lighter showers compared to the heavier deluges of summer, signaling a transition towards the wetter months ahead. This trend not only highlights the gradual cooling of the season but also sets the stage for the increased precipitation expected in October, which often brings a rebound with 78 mm (3.1 in) of rain.

September Precipitation Trends in La Hulpe

The chart displays monthly precipitation patterns in La Hulpe, 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 La Hulpe, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec657071376072748458785892
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in La Hulpe

As the summer gives way to fall, September in La Hulpe, Belgium, experiences a notable increase in humidity, averaging around 82%. This rise follows the lower levels of August, which saw humidity drop to 76%, signaling a transition in seasons. Throughout the year, humidity levels tend to be highest during the winter months, peaking at 91% in January and remaining elevated until the late spring. A gradual decrease is evident from early spring to mid-summer, illustrating a clear trend of declining moisture during the warmer months. However, as autumn approaches, humidity begins to climb again, indicative of the approaching chill and the onset of winter's dampness.

September Average Humidity in La Hulpe

This chart illustrates the average monthly humidity levels in La Hulpe, 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 La Hulpe 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 La Hulpe

In September, La Hulpe experiences a moderate UV Index of 5, making it essential for residents and visitors to take care when basking in the fading summer sun. With a burn time of just 30 minutes, it's a reminder that while the season is transitioning, UV exposure remains significant. Throughout the summer months, particularly in June and July, the region faced very high UV levels, peaking at an index of 8, which required enhanced protective measures. As autumn approaches, the UV Index begins a gradual decline, yet September still holds its own, reflecting a shift from the peak summer UV exposure. For those looking to understand safety measures and trends in sun exposure, exploring the full year’s UV Index can be insightful. For more detailed information, check out La Hulpe UV Index.

Maximum UV Index Levels in La Hulpe for September

The chart shows the monthly maximum UV Index (UVI) for La Hulpe 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 La Hulpe typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: La Hulpe 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 La Hulpe

As September rolls in La Hulpe, Belgium, the lingering warmth of summer is beautifully reflected in the 319 hours of sunshine enjoyed this month. This marks a gentle decline from the sun-kissed peaks of July and June, which boasted over 400 hours each. However, September's sunlight still shines brighter than the chilly onset of autumn that follows, hinting at a vibrant transition. The trend throughout the year shows a steady increase in sunshine from the dim days of January to the bright summer months, before gradually tapering off as the days grow shorter. It's a picturesque reminder of the season’s shift, where the golden rays of September invite one last moment of outdoor bliss before autumn takes center stage.

Monthly Sunshine Duration in La Hulpe: September Highlighted

The September sunshine duration represents the total number of hours La Hulpe 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.
JanFebMarAprMayJunJulAugSepOctNovDec121h200h266h346h394h398h406h379h319h240h190h143h
Data source: La Hulpe September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in La Hulpe During September

In La Hulpe, Belgium, September offers a 36% chance of sunny weather, marking a subtle uptick from the summer months where sunshine chances hovered around 29-33%. This transitional period into autumn signifies a shift, as the likelihood of clear skies starts to decrease, yet September still holds onto a modest promise of sun. Contrastingly, the earlier months of the year show significantly lower probabilities, with only 10% in January gradually climbing to 49% in April. Therefore, while September may not compete with the warmth of summer, it stands out as a pleasant opportunity for enjoying the outdoors before the chill of fall sets in.

Percentage of Sunny Days in September in La Hulpe

The chart illustrates the percentage of sunny days in La Hulpe 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 La Hulpe experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec10%31%39%49%33%33%33%29%36%31%24%16%
Data source: La Hulpe September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in La Hulpe in September

As summer fades into autumn in La Hulpe, Belgium, September showcases a noteworthy transition in daylight duration, with 12 hours of sunlight illuminating the city. This marks a gentle decline from the preceding months of June and July, which basked in the longest days of the year at 16 and 15 hours respectively. Following the vibrant energy of late spring and summer, September offers a balanced blend of light, as the days grow shorter yet still provide ample opportunity to enjoy the outdoors. This gradual decrease hints at the approach of autumn, a season characterized by softer light and stunning foliage, inviting residents to revel in the beauty of changing landscapes before the daylight dips further in October and November.

Average Daylight Hours in La Hulpe for September

The chart illustrates the variation in daylight duration in La Hulpe throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 30m10h 2m11h 55m13h 50m15h 31m16h 23m15h 55m14h 25m12h 34m10h 39m8h 56m8h 1m
Data source: La Hulpe daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in La Hulpe

As September arrives in La Hulpe, Belgium, the wind begins to whisper a gentler tune, with an average speed of 3.0 m/s (7 mph). This marks a noticeable decline from the breezier days of summer, where July and August both enjoyed winds at 3.4 m/s (8 mph). Over the course of the year, we see a trend where the winter months consistently present stronger gusts, with January reaching 4.4 m/s (10 mph). The transition into autumn heralds a softening of the breeze, creating a calm that invites leisurely outdoor activities while the leaves start to turn. As October approaches, winds begin to pick up again, reminding us that while September may be quieter, the spirited weather of autumn is just around the corner.

Average September Wind Speed in La Hulpe

The chart displays monthly wind speed patterns in La Hulpe, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.44.64.13.44.42.83.43.43.0 m/s4.43.44.2
Data source: La Hulpe September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in La Hulpe Compares to Other Months

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

September and January present strikingly different weather conditions. In September, temperatures range from a mild minimum of 4°C (39°F) to a maximum of 33°C (91°F), with an average of 15°C (60°F). This month experiences about 58 mm (2.3 in) of precipitation over approximately 10 days, accompanied by a relatively high humidity of 82%. In contrast, January brings a much colder climate, with temperatures dipping as low as -7°C (20°F) and peaking at 14°C (57°F), averaging just 4°C (39°F). Precipitation slightly increases to 65 mm (2.6 in) spread over 12 days, while humidity rises to 91%, creating a distinctly chilly and damp atmosphere. For more detailed information, you can check La Hulpe weather in January.

In September, temperatures can vary significantly, with minimums around 4°C (39°F) and maximums reaching up to 33°C (91°F), creating a generally warm and humid atmosphere with an average of 15°C (60°F). The month experiences about 58 mm (2.3 inches) of precipitation over approximately 10 days, contributing to a humidity level of 82%. In contrast, February brings much colder weather, with temperatures dipping as low as -9°C (17°F) and an average of just 5°C (42°F), while the maximum temperature reaches 19°C (66°F). This month sees slightly higher precipitation at 70 mm (2.7 inches) over about 12 days and increased humidity at 89%. For more detailed information on February weather, you can visit La Hulpe weather in February.

In comparing the weather between September and March, noticeable differences emerge. September boasts a temperature range from a mild 15°C (60°F) to a warm 33°C (91°F), while March experiences cooler conditions with temperatures varying from a low of -9°C (17°F) to a high of 23°C (74°F). While September sees an average precipitation of 58 mm (2.3 in) over approximately 10 days, March experiences slightly higher precipitation at 71 mm (2.8 in) over a longer period of 14 days. Humidity levels are also marginally higher in March at 87%, compared to September's 82%. For more detailed insights into the weather during this time, you can visit La Hulpe weather in March.

In comparing the weather of September and April, September generally presents a wider range of temperatures, with minimums around 4°C (39°F) and maximums soaring up to 33°C (91°F). In contrast, April’s temperatures are cooler, featuring a minimum of -4°C (26°F) and a maximum of 27°C (81°F). Both months experience a fair amount of precipitation, with September receiving an average of 58 mm (2.3 in) over 10 days, while April sees 36 mm (1.4 in) across 8 days. Humidity levels are slightly higher in September at 82%, compared to April's 85%. For more specific details on April's weather, you can check La Hulpe weather in April.

When comparing the weather in September and May, both months exhibit similar humidity levels at 82%, but their temperature ranges differ significantly. September tends to be warmer, with an average temperature of 15°C (60°F) and highs reaching up to 33°C (91°F), while May has a cooler average of 13°C (57°F) and maximum temperatures peaking at 31°C (87°F). Additionally, September experiences slightly less precipitation at 58 mm (2.3 in) over about 10 days, compared to May's 60 mm (2.4 in) spread over 13 days. For more detailed information, you can visit La Hulpe weather in May.

September and June present slightly different weather patterns despite sharing the same maximum temperature of 33°C (91°F). In September, temperatures range from a minimum of 4°C (39°F) to an average of 15°C (60°F), whereas June starts warmer with minimums at 7°C (45°F) and an average temperature of 18°C (65°F). Precipitation levels are also notable, with September receiving 58 mm (2.3 in) over 10 days, while June sees a bit more rain at 72 mm (2.8 in) across 11 days. Both months have a humidity of 82%, creating a similarly muggy experience. For more details about June weather in La Hulpe, visit La Hulpe weather in June.

In comparing the weather of September and July, September exhibits a broader temperature range, with minimums dropping to 4°C (39°F) and maximums peaking at 33°C (91°F), while July maintains milder temperatures with minimums around 8°C (46°F) and highs reaching up to 39°C (102°F). Precipitation levels are slightly lower in September at 58 mm (2.3 in) over approximately 10 days, compared to July's 74 mm (2.9 in) across 11 days. Humidity levels are relatively high in both months, with September at 82% and July trailing closely at 80%. For more details, you can visit La Hulpe weather in July.

In comparing the weather of September and August, September presents a cooler overall climate, with average temperatures ranging from a minimum of 4°C (39°F) to a maximum of 33°C (91°F), as opposed to August's higher averages of 7°C (46°F) to 36°C (97°F). Precipitation levels in September are slightly lower at 58 mm (2.3 in) over 10 days, compared to August's 84 mm (3.3 in) across 14 days, suggesting less frequent rainfall in September. Additionally, September experiences higher humidity at 82%, while August maintains a slightly lower humidity level of 76%. For more insights on the August weather, you can visit La Hulpe weather in August.

In comparison, September boasts a wider temperature range, with a minimum of 4°C (39°F) and a maximum of 33°C (91°F), resulting in an average of 15°C (60°F). It also experiences less precipitation, totaling 58 mm (2.3 in) over approximately 10 days, and a humidity level of 82%. Conversely, October sees cooler temperatures, with a minimum of 1°C (35°F) and an average of 12°C (54°F), peaking at 25°C (77°F). The month brings an increased precipitation amount of 78 mm (3.1 in) across about 13 days, accompanied by higher humidity at 89%. For more detailed information about the weather in October, you can check La Hulpe weather in October.

In September, temperatures range significantly from a cool 4°C (39°F) at night to a warm 33°C (91°F) during the day, with an average of 15°C (60°F). The month experiences moderate precipitation of 58 mm (2.3 in) over about 10 days, accompanied by high humidity levels of 82%. In contrast, November brings a notable drop in temperatures, with nighttime lows reaching -3°C (28°F) and daytime highs peaking at 18°C (65°F), averaging around 7°C (45°F). This month also has slightly higher precipitation at 57 mm (2.3 in) spread over 11 days, along with increased humidity at 92%. For more details on the expected conditions, visit La Hulpe weather in November.

In September, temperatures typically range from a minimum of 4°C (39°F) to a maximum of 33°C (91°F), with an average of 15°C (60°F). The month experiences about 58 mm (2.3 in) of precipitation over 10 days and maintains a humidity level of 82%. In contrast, December sees much cooler temperatures, with a minimum of -4°C (24°F) and a maximum of 15°C (59°F), averaging around 5°C (42°F). Precipitation increases to 92 mm (3.6 in) spread across 17 days, while humidity rises slightly to 92%. This stark contrast highlights the significant seasonal shift that occurs from September to December. For more details on December weather, visit La Hulpe weather in December.

Compare La Hulpe's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in La Hulpe

September in La Hulpe marks a significant transition as the summer heat begins to wane, offering a refreshing escape from the peak temperatures experienced earlier in the year. While days can still reach a warm 33°C (91°F), the average settles nicely at a comfortable 15°C (60°F), making it a more pleasant time for outdoor activities. However, the month also brings increased humidity of 82% and a moderate 58 mm of precipitation, spread across roughly 10 days, signaling the onset of autumn's embrace. As the vibrant foliage starts to appear, September invites both locals and visitors to enjoy the beautiful transformation of La Hulpe's landscape. To learn more about how the weather varies throughout the year, explore La Hulpe Climate.