Last updated: August 21, 2025
September in Anderlecht, Belgium offers a vibrant blend of weather experiences, showcasing a maximum temperature reaching 33°C (91°F), alongside a refreshing average of 15°C (60°F). While the month can start off warm, it also brings cooler nights, dipping to a minimum of 4°C (39°F). With 55 mm (2.2 in) of precipitation over approximately 9 days, September features a mix of sunny spells and occasional rain, contributing to a humidity level of 82%. This weather pattern creates a unique atmosphere, perfect for exploring the charming streets of Anderlecht as summer transitions into autumn.
September in Anderlecht, Belgium, marks a delightful transition into autumn, with temperatures exhibiting a comfortable range that appeals to both locals and travelers alike. The month begins with a minimum temperature of 4°C (39°F), gradually climbing to an average of 15°C (60°F), and peaks at a pleasant 33°C (91°F). This slight warmth is a charming farewell to summer, allowing for outdoor activities and exploration. As the days shorten and the air cools towards the end of the month, you can still enjoy mild afternoons that are perfect for strolling through the city's picturesque streets. The overall trend sees a drop from the sweltering summer highs, offering a refreshing but comfortable climate that signifies the changing seasons.
In September, Anderlecht experiences a moderate precipitation of 55 mm (2.2 in), marking a transition from the wetter months of summer. With only 9 days of rain, this month offers a slight reprieve compared to the heavier August, which recorded an impressive 80 mm (3.2 in) across 14 days. This trend suggests a gradual shift as the seasons change, with September typically being drier, yet still contributing to the overall annual rainfall. As autumn approaches, residents can expect a more varied weather pattern, foreshadowing the wetter conditions of October, which often sees a spike in precipitation.
In September, Anderlecht, Belgium experiences a slight uptick in humidity, averaging 82%. This marks a return to the mid-level humidity figures typically seen earlier in the year, after the drier months of July and August, which recorded 80% and 76% respectively. The transition into autumn is evident as humidity levels normalize, setting the stage for the wetter months ahead. Following September, the humidity rises sharply, reaching 89% in October and escalating further to 92% by November and December. This trend underlines a notable seasonal shift, with the latter part of the year bringing a cozy, albeit damp, atmosphere to this charming Belgian locale.
In Anderlecht, Belgium, the September UV Index typically reaches a moderate level of 5, indicating that while sun exposure is manageable, it’s prudent to take precautions. After the peak summer months of July and August, when the index soared to 8, a noticeable decline can be observed. This change allows for a bit more outdoor freedom with a burn time of 30 minutes, but it’s still essential to be mindful of UV exposure. As the year transitions into autumn, the UV Index dips further in October, dropping to 4, making September a transitional month where sun protection is still relevant but less critical than in the height of summer. For more information on UV levels throughout the year, visit the Anderlecht UV Index.
UV Risk Categories
As summer fades into fall, September in Anderlecht, Belgium, greets its residents with a warm embrace of 319 sunshine hours—a notable reduction from the sun-soaked days of July and June, which boasted over 400 hours. However, this month still shines brighter than the colder months ahead, with a substantial lead over the dimmer January and February. Interestingly, while the daylight hours begin to dwindle, September retains a golden charm, inviting both locals and visitors to savor the pleasant early autumn atmosphere before the chill of winter sets in. This transitional month acts as a brilliant encore to the vibrant summer, showcasing a steady decline in sunlight that hints at the cozy indoor days to come.
September in Anderlecht, Belgium, brings a moderate chance of sunny weather with around 36% likelihood of clear skies. This reflects a slight uptick from the summer months, where the sun shines about 29% to 34% of the time. As the season transitions from the warmth of summer to the crispness of autumn, September often serves as a bridge, providing occasional sunny spells amidst increasing cloud cover. This makes it a delightful month for outdoor activities, especially as it outshines the months that follow, like October, which sees a reduced 32% chance of sunshine. So, if you’re planning to soak up some rays, September is your best bet before the dreary winter sets in!
As summer fades, September in Anderlecht, Belgium welcomes a gentle transition with 12 hours of daylight. This month marks a noticeable shift from the sun-drenched days of June and July, which boasted up to 16 hours, towards the shorter evenings of autumn. The gradual decrease in daylight, following August's 14 hours, hints at the impending cozy months ahead, as the vibrant colors of fall begin to unfold. With September bridging the gap between summer's brightness and winter's dimness, it offers a perfect opportunity to enjoy the lingering warmth and beauty of nature before daylight shrinks further into October's 10 hours.
As September rolls into Anderlecht, the winds begin to whisper a gentle lullaby, with an average speed of 3.0 m/s (7 mph). This slight dip marks the transition into autumn, as the breezy conditions of summer fade. Compared to the previous months, September's winds are among the calmest of the year, reflecting a noticeable decline since June's peak of 2.8 m/s (6 mph). Interestingly, this tranquil period paves the way for a resurgence in wind speed come October, where gusts rekindle their strength to 4.3 m/s (10 mph). This pattern highlights a seasonal ebb and flow, inviting residents to savor the serene breezes of early fall while anticipating the wind's invigorating return.
Weather in Anderlecht varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Anderlecht, focusing on differences in temperature, rainfall, humidity, and UV levels.
September and January present stark contrasts in weather conditions. September often showcases a more temperate climate, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 33°C (91°F) and an average of 15°C (60°F). The month experiences about 55 mm (2.2 in) of precipitation over 9 days, accompanied by relatively high humidity at 82%. In contrast, January is notably colder, with temperatures dipping to a minimum of -7°C (20°F) and peaking at only 14°C (57°F), averaging around 4°C (39°F). This winter month also sees slightly higher precipitation at 65 mm (2.5 in), but spread over more days—12 in total—and features even higher humidity at 91%. For a more detailed look at January weather patterns, you can explore Anderlecht weather in January.
September and February present distinctly different weather patterns. In September, temperatures 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). While the month experiences moderate precipitation of 55 mm (2.2 in) over about 9 days, humidity remains high at 82%. In contrast, February is considerably colder, with temperatures dipping as low as -8°C (17°F) and peaking at 19°C (66°F), averaging around 5°C (42°F). February also sees slightly more rainfall, totaling 69 mm (2.7 in) spread over 12 days, and an even higher humidity level of 89%. For more detailed insights into February weather, check Anderlecht weather in February.
When comparing the weather in September and March, we can see significant differences in temperature and precipitation. September tends to have milder temperatures, ranging from a minimum of 4°C (39°F) to a maximum of 33°C (91°F), with an average temperature of 15°C (60°F). In contrast, March experiences cooler temperatures, with a range from a minimum of -8°C (17°F) to a maximum of 23°C (74°F) and an average of 7°C (45°F).
While September has relatively lower precipitation at 55 mm (2.2 in) over about 9 days, March sees more rain with 70 mm (2.8 in) spread across approximately 14 days. Additionally, March has slightly higher humidity at 87% compared to September's 82%, contributing to a different overall feel during these months. For more detailed information about weather in March, you can check Anderlecht weather in March.
In comparing the weather of September and April, September tends to be warmer, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 33°C (91°F), averaging around 15°C (60°F). It also sees a relatively higher precipitation level of 55 mm (2.2 in) over approximately 9 days, while maintaining a humidity level of 82%. In contrast, April experiences cooler conditions, with temperatures ranging from a low of -4°C (26°F) to a high of 27°C (80°F), averaging 10°C (50°F). This month has less precipitation, totaling 37 mm (1.5 in) over about 8 days, coupled with slightly higher humidity at 85%. For more detailed information, you can visit Anderlecht weather in April.
When comparing the weather between September and May, both months exhibit relatively similar humidity levels at around 82%. However, September tends to be warmer, with average temperatures reaching 15°C (60°F) compared to May's average of 13°C (57°F). While the maximum temperature in September can soar up to 33°C (91°F), May's peak is slightly cooler at 31°C (88°F). Precipitation levels are also comparable, with September receiving 55 mm (2.2 in) over about 9 days, while May has slightly more rainfall at 58 mm (2.3 in) over 12 days. For more detailed insights into May's climate, check out Anderlecht weather in May.
In comparing the weather between September and June, we notice some intriguing contrasts. September tends to have a wider temperature range, with minimums dropping to 4°C (39°F) and maximums soaring up to 33°C (91°F), while June features a more moderate range with minimums at 7°C (44°F) and maximums nearly matching September at 32°C (91°F). Average temperatures in September reach 15°C (60°F), slightly lower than June's average of 18°C (65°F). Both months experience similar precipitation levels, with September recording 55 mm (2.2 in) and June 66 mm (2.6 in), and both seeing rainfall on about 9 days. Notably, humidity remains consistent at 82% for both months, creating a humid atmosphere. For more detailed information on June weather, you can visit Anderlecht weather in June.
In comparing the weather of September and July, September experiences a wider temperature range with minimums dipping to 4°C (39°F) and maximums reaching up to 33°C (91°F), resulting in an average temperature of 15°C (60°F). In contrast, July has milder nights with minimums of 8°C (46°F) and higher daytime highs that can soar to 39°C (102°F), giving it an average of 19°C (66°F). While July sees slightly more precipitation at 71 mm (2.8 in) over 11 days, September has 55 mm (2.2 in) over about 9 days, indicating that late summer brings more sporadic rainfall. Humidity levels remain comparable between the two months, with September at 82% and July at 80%. For more specifics on July weather, check out Anderlecht weather in July.
In comparing the weather of September and August, September typically experiences lower minimum temperatures, with a minimum of 4°C (39°F), compared to August's 8°C (46°F). While the average temperature in September reaches 15°C (60°F), it remains cooler than August's average of 19°C (66°F). The maximum temperatures show a significant difference as well, with September peaking at 33°C (91°F) while August can soar to 36°C (97°F). Precipitation also increased in September, totaling 55 mm (2.2 in) over 9 days, compared to the 80 mm (3.2 in) over 14 days in August. Humidity levels are slightly higher in September at 82%, compared to 76% in August. For more details on August weather, you can visit Anderlecht weather in August.
September and October exhibit notable differences in weather patterns. September sees a broad temperature range, with a minimum of 4°C (39°F) and a maximum reaching up to 33°C (91°F), resulting in an average of 15°C (60°F). In contrast, October's temperatures dip further, with a minimum of 1°C (34°F) and a maximum of 25°C (77°F), averaging 12°C (54°F). Rainfall also increases in October, totaling 76 mm (3.0 in) over 13 days, compared to September’s 55 mm (2.2 in) across 9 days. Additionally, humidity rises slightly from 82% in September to 89% in October, contributing to a more pronounced autumn atmosphere. For more information, you can check Anderlecht weather in October.
September generally offers warmer weather compared to November, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 33°C (91°F) and an average of 15°C (60°F). In contrast, November sees cooler conditions, with temperatures dropping to a minimum of -2°C (28°F), averaging 7°C (45°F), and a maximum of 18°C (65°F). Both months experience similar levels of precipitation, around 55-57 mm (2.2 in), but November has slightly more rainy days (11 days compared to September's 9 days). Additionally, humidity is higher in November at 92%, compared to September's 82%. For more detailed information about the weather patterns, you can check Anderlecht weather in November.
September and December in Anderlecht present contrasting weather conditions. In September, the temperatures range from a mild 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 sees about 55 mm (2.2 inches) of rain across 9 days, and humidity levels are relatively high at 82%. In contrast, December experiences much colder temperatures, with minimums plunging to -5°C (24°F) and daily highs peaking at 15°C (59°F), averaging just 5°C (42°F). This month is wetter, too, with 93 mm (3.7 inches) of precipitation over 17 days, resulting in a slightly higher humidity level of 92%. For more detailed information, you can check Anderlecht weather in December.
As September unfolds in Anderlecht, the weather offers a pleasant blend that sets it apart from the heat of summer and the chill of autumn. With maximum temperatures peaking at 33°C, this month still retains a hint of summer's warmth, while the average temperature dips to a more moderate 15°C. While it can feel quite humid, with levels around 82%, the 55 mm of precipitation over about 9 days reminds us that the transition to fall is underway. This unique mix of warmth, humidity, and occasional rain makes September a truly distinctive time to experience the charm of Anderlecht. For a deeper dive into the average weather patterns, visit Anderlecht Climate.