Last updated: August 21, 2025
September in Bouillon, Belgium sees a dynamic range of temperatures, with highs reaching an impressive 33°C (92°F) and lows dipping to a cool 3°C (38°F). The average temperature hovers around a comfortable 15°C (59°F), offering a lovely blend of warmth and crispness. However, this month is also marked by moderate precipitation, totaling 70 mm (2.8 in) across approximately 10 days, contributing to the region's lush scenery. With an humidity level of 81%, expect a refreshing yet slightly moist atmosphere, perfect for enjoying the beautiful fall landscapes.
September in Bouillon, Belgium, marks a transitional phase that showcases the tail end of summer as temperatures begin to dip. With minimums around 3°C (38°F) and an average of 15°C (59°F), the month feels pleasantly mild compared to the scorching highs of the previous summer months. The peak temperature can reach a comfortable 33°C (92°F), offering warm days perfect for outdoor exploration. As the month progresses, nature gears up for the fall, making it an ideal time to enjoy the vibrant foliage while savoring the lingering warmth before winter sets in. Overall, September fosters a beautiful balance, captured in its cool evenings and warm afternoons, inviting both residents and visitors to relish the charm of Bouillon.
In September, Bouillon experiences a moderate shift in precipitation, receiving 70 mm (2.8 in) over an average of 10 days. This marks a notable decrease from the summer months, where rainfall typically hovers in the 70-80 mm range. September's rain, while lower than the preceding months of August and July, hints at the transition to the wetter autumnal season ahead. As the days grow shorter and the air cools, this dip in both total precipitation and the number of rainy days suggests a gradual yet inevitable shift towards the rainier months of October and December, which are characterized by significantly higher rainfall totals of 102 mm (4.0 in) and 146 mm (5.8 in) respectively. The data vividly illustrates the dynamic weather patterns of Bouillon, where each month brings its unique rhythm of precipitation.
In September, Bouillon experiences a slight rebound in humidity, with levels sitting at 81%. This marks an increase from the summer months, where humidity dipped to a comfortable 76% in August. As the transition to autumn begins, the air becomes progressively more humid, hinting at the impending chill of October, which sees humidity levels rise to 88%. Overall, a trend of declining humidity is evident from January through August, reaching its low point in the summer, followed by a gradual increase as the year draws to a close. This pattern not only adds a distinct character to Bouillon's climate but also enriches the lush landscapes that come alive with the changing seasons.
In September, the UV Index in Bouillon, Belgium, reflects a transition as summer wanes into autumn. With a UV Index of 6, categorized as high, sunbathers should stay cautious, as the burn time is notably reduced to 25 minutes. This marks a decline from the very high levels of 8 experienced during the peak summer months of June through August, where quick reapplication of sunscreen was essential. As the days grow shorter and the sun’s intensity diminishes, September serves as a reminder to stay vigilant about sun protection while enjoying the lingering warmth of early autumn. For more detailed information, explore the Bouillon UV Index.
UV Risk Categories
As summer gracefully transitions into autumn, September captures the tail end of sunny splendor in Bouillon, Belgium, with an impressive 317 hours of sunshine. This marks a noticeable decline from the peak summer months of June and July, each basking in a remarkable 404 hours. However, September still stands out as a vibrant month compared to the dreary winter months ahead, which average around 178 to 118 hours of sunlight. With the days growing shorter, this month offers a delightful balance, allowing residents and visitors to revel in the last warm rays before embracing the cooler, darker months of the year. The gradual decline in daylight showcases the seasonal rhythm of Bouillon, making September a charming time to enjoy the picturesque landscapes bathed in golden light.
In September, Bouillon, Belgium experiences a moderate 38% chance of sunny weather, making it one of the brighter months as summer transitions into fall. This marks a noticeable uptick from the preceding months of August and July, where the likelihood of sunshine lingers around 27% and 34%, respectively. As autumn begins, the sun's presence becomes more promising compared to the winter months ahead, which see a significant drop in sunny days, particularly in January and December. Overall, September's weather strikes a balance between the fading summer warmth and the impending chill, inviting outdoor enthusiasts to enjoy the last rays of sun before the season changes.
In September, Bouillon, Belgium, enjoys about 12 hours of daylight, marking a graceful transition from the vibrant days of summer toward the shorter days of autumn. As the month unfolds, daylight gradually decreases from the summer peak of 16 hours in June and 15 hours in July, showcasing a natural rhythm of change. This shift is complemented by the rich hues of early autumn, creating a picturesque backdrop as the daylight wanes to 10 hours by October. The progression from the extended brightness of May and June to the crisp, shorter days of fall reflects the seasonal ebb and flow, inviting residents and visitors alike to savor the unique beauty each phase of the year offers.
In September, the wind in Bouillon softens to an average speed of 2.7 m/s (6 mph), marking a gentle transition into autumn. This decrease reflects a broader trend observed throughout the summer months, where wind speeds began to dip from their peak in May. As the season winds down, this calming breeze invites locals and visitors alike to enjoy the picturesque landscapes at a leisurely pace. Moving into October, the winds pick up slightly again, hinting at the briskness that often accompanies the fall. Overall, September's peaceful winds encapsulate the tranquil beauty of Bouillon, transitioning the vibrant energy of summer into the serene embrace of autumn.
Weather in Bouillon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Bouillon, focusing on differences in temperature, rainfall, humidity, and UV levels.
In September, the weather is generally mild with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 33°C (92°F) and an average of 15°C (59°F). This month sees about 70 mm (2.8 in) of precipitation over roughly 10 days and maintains a humidity level of 81%. In contrast, January brings much colder conditions, with temperatures dropping to a minimum of -8°C (18°F), averaging 2°C (36°F), and peaking at 12°C (54°F). The heavier precipitation of 92 mm (3.6 in) is spread across 13 days with slightly higher humidity at 91%. For more detailed information on January weather, you can refer to Bouillon weather in January.
September and February exhibit stark contrasts in weather patterns. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 33°C (92°F), with an average of 15°C (59°F), creating a warm atmosphere that is perfect for early autumn activities. The month sees about 70 mm (2.8 in) of precipitation over 10 days, accompanied by relatively high humidity levels of 81%.
In contrast, February presents a much colder climate, with temperatures dropping to a minimum of -9°C (16°F) and peaking at 19°C (66°F), resulting in a lower average of 4°C (40°F). This winter month receives even more precipitation, amounting to 90 mm (3.5 in) over 12 days and a higher humidity rate of 89%. For those interested in the specifics of February weather, you can explore more at Bouillon weather in February.
September and March present contrasting weather patterns. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 33°C (92°F), with an average of 15°C (59°F), making it generally warmer than March. However, March experiences colder conditions, with temperatures dipping as low as -11°C (12°F) and reaching a maximum of 22°C (72°F), averaging around 6°C (44°F). Additionally, March sees more precipitation, totaling 99 mm (3.9 in) over 16 days, compared to September's 70 mm (2.8 in) over 10 days. Humidity levels remain relatively high in both months, at 81% in September and 86% in March, making for moist conditions throughout. For more detailed information on March weather, you can check Bouillon weather in March.
In comparing the weather between September and April, we notice distinct seasonal contrasts. September typically boasts a warmer range of temperatures, with a minimum of 3°C and an average of 15°C, peaking at 33°C. In contrast, April experiences cooler conditions, with temperatures ranging from a minimum of -3°C to an average of 9°C and a maximum of 26°C. Precipitation is more abundant in September, accumulating to 70 mm over about 10 days, while April sees less rainfall at 46 mm over 9 days. Notably, humidity levels are slightly higher in April at 84% compared to 81% in September. For those interested in more specifics about April weather, you can check out Bouillon weather in April.
In comparing the weather between September and May, September generally presents a wider temperature range, with minimums of 3°C (38°F) and maximums reaching up to 33°C (92°F). In contrast, May starts off cooler, featuring a minimum temperature of 0°C (32°F) and an average maximum of 30°C (87°F). Both months experience notable humidity levels, with September slightly lower at 81% compared to May’s 82%. Precipitation is slightly more frequent in May, with rainfall occurring on 13 days, while September has precipitation on 10 days, although the total amounts are relatively close—70 mm (2.8 in) for September versus 79 mm (3.1 in) for May. For more details, you can check Bouillon weather in May.
In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 33°C (92°F), with an average of 15°C (59°F). The month experiences about 70 mm (2.8 in) of precipitation over approximately 10 days, accompanied by a humidity level of 81%. In contrast, June typically features milder temperatures, with a minimum of 5°C (42°F), an average of 18°C (64°F), and a maximum reaching 32°C (90°F). June sees slightly higher precipitation at 78 mm (3.1 in) over about 13 days, along with a humidity level of 82%. For more details, check Bouillon weather in June.
In comparing the weather of September and July, we can observe some notable differences. September typically experiences a wider range of temperatures, with a minimum of 3°C (38°F) and a maximum of 33°C (92°F), leading to an average of 15°C (59°F). In contrast, July has generally warmer temperatures, with lows around 7°C (46°F), highs reaching up to 39°C (102°F), and an average of 18°C (66°F). Both months see similar levels of precipitation, with September receiving 70 mm (2.8 in) over 10 days and July slightly higher at 73 mm (2.9 in) over 11 days. Humidity levels are comparable as well, with September at 81% and July at 80%. For a closer look at July weather specifics, you can visit Bouillon weather in July.
In comparing the weather between September and August, it is evident that September experiences a cooler range of temperatures, with a minimum of 3°C (38°F) compared to August's 5°C (41°F). The average temperature in September is also lower at 15°C (59°F), while August boasts an average of 18°C (65°F). August reaches higher maximum temperatures as well, hitting 36°C (97°F) compared to September's peak of 33°C (92°F). Additionally, both months have significant precipitation, with September recording 70 mm (2.8 in) over 10 days, slightly less than August's 77 mm (3.0 in) over 14 days. Humidity levels are slightly higher in September at 81% versus August's 76%. For more details on August's climate, you can refer to Bouillon weather in August.
In comparing the weather between September and October, September boasts a wider temperature range with a minimum of 3°C (38°F) and a maximum of 33°C (92°F), leading to an average of 15°C (59°F). However, it experiences lower humidity (81%) and less total precipitation (70 mm) over fewer days (10). In contrast, October sees cooler temperatures with a minimum of 0°C (33°F) and a maximum of 24°C (76°F), resulting in a lower average of 11°C (52°F). Additionally, October is characterized by higher humidity (88%) and increased precipitation, totaling 102 mm over 13 days. For a detailed look at October weather, you can visit Bouillon weather in October.
September experiences a wide range of temperatures, with minimums around 3°C (38°F) and maximums reaching up to 33°C (92°F), creating an average of 15°C (59°F). The month sees about 70 mm (2.8 in) of precipitation spread across approximately 10 days, accompanied by a humidity level of 81%. In contrast, November brings much cooler weather, with temperatures plunging to a minimum of -3°C (26°F) and averaging just 6°C (43°F), while highs peak at 18°C (66°F). Precipitation increases slightly to 80 mm (3.2 in) over around 13 days, with humidity rising to 92%. For more detailed information, check out Bouillon weather in November.
September and December present starkly different weather conditions. In September, temperatures range from a minimum of 3°C (38°F) to a warm maximum of 33°C (92°F), with an average of 15°C (59°F) and more manageable humidity at 81%. While rainfall is present, with about 70 mm (2.8 in) over 10 days, the weather remains generally mild and pleasant.
In contrast, December sees a significant drop in temperatures, with lows plunging to -5°C (24°F) and a maximum of only 14°C (58°F), creating a colder average of 4°C (39°F). The month also experiences heavier precipitation at 146 mm (5.8 in) spread over 19 days, accompanied by higher humidity at 93%. This shift from the warmth of September to the chill of December underscores the seasonal changes characteristic of this region. For more details, you can check Bouillon weather in December.
September in Bouillon offers a unique transition as summer fades into autumn. Visitors can expect a warm maximum that can reach up to 33°C, though the average daily temperature cools down to a comfortable 15°C. While the evenings can get quite brisk, dipping as low as 3°C, the 81% humidity can make the air feel richer. Rain is not uncommon, with about 70 mm of precipitation over the month, often falling on 10 days, making this period notably wetter compared to the drier summer months. This blend of warmth and moisture showcases September's distinctive charm, inviting you to experience the vibrant hues of autumn while enjoying the lingering warmth of summer. For a deeper understanding of what to expect throughout the year, visit Bouillon Climate.