December Weather in Anderlecht, Belgium

Last updated: August 21, 2025

December in Anderlecht, Belgium presents a chilly yet intriguing climate characterized by maximum temperatures reaching 15°C (59°F) and an average of 5°C (42°F). As winter settles in, the mercury can dip to a brisk -5°C (24°F), inviting bundled-up exploration of the season's charm. Rainfall is notable this month, with a total precipitation of 93 mm (3.7 in) spread over 17 days, contributing to the area's high humidity levels of 92%. This dynamic weather palette offers a unique backdrop for both residents and visitors alike to embrace the beauty of winter in Anderlecht.

December Temperature in Anderlecht

In December, Anderlecht, Belgium, experiences a significant drop in temperatures as winter settles in. The month typically starts with nighttime lows around -5°C (24°F), hinting at the cold that lingers in the air. Daytime brings a slight reprieve, with average temperatures hovering around 5°C (42°F) and highs reaching a comfortable 15°C (59°F). This transition marks a continued descent in temperatures from the milder autumn months, with December showcasing the last glimpse of warmth before the colder days of January and February set in. While the chill may deter some, the crisp air adds a certain charm as the holiday season unfolds, making it a perfect time to enjoy the seasonal magic of the city.

December Weather in Anderlecht: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Anderlecht, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Anderlecht, December 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).
JanFebMarAprMayJunJulAugSepOctNovDec394245505664666660544542
Data source: Temperature data for Anderlecht generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Anderlecht

In December, Anderlecht experiences a notable surge in precipitation, with 93 mm (3.7 in) of rainfall over 17 days—the highest monthly total of the year. This increase marks a distinct shift from the milder, more variable conditions of the preceding months. As autumn transitions into winter, the frequency and intensity of rain contribute to the cool, damp atmosphere typical of the season. Interestingly, December's precipitation not only surpasses the amounts of earlier months, but also reflects a pattern of heightened rainfall as the year draws to a close. This trend underscores the shift towards wetter weather in the latter part of the year, making December a particularly soggy month in this Belgian suburb.

December Precipitation Trends in Anderlecht

The chart displays monthly precipitation patterns in Anderlecht, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Anderlecht, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec656971375866718055765793
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Anderlecht

In Anderlecht, Belgium, December sees humidity levels holding steady at a notable 92%, mirroring the high levels of the preceding month. As the year progresses, there is a clear trend: humidity remains elevated from late autumn through winter, peaking in January at a staggering 91%. Following a slight decrease in the warmer months—where July and August enjoy drier conditions at 80% and 76% respectively—humidity levels rise again as the colder months approach. This cyclical pattern emphasizes the maritime climate of Anderlecht, where moisture-laden air settles in, making December's dampness part of a consistent seasonal rhythm.

December Average Humidity in Anderlecht

This chart illustrates the average monthly humidity levels in Anderlecht, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Anderlecht 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 December generated using information from the Copernicus Climate Change Service.

December UV Index in Anderlecht

In December, Anderlecht experiences a low UV Index of 1, consistent with the winter months where sun exposure is minimal. This pattern emerges after a gradual increase from January’s UV Index of 1 to May and June, when levels peak at 7 and 8, indicating a trend of rising solar intensity as the seasons transition. As winter settles in, residents can enjoy a burn time of 45 minutes without significant risk, mirroring the safe exposure levels seen at the beginning of the year. For a detailed view of seasonal changes, visit Anderlecht UV Index.

Maximum UV Index Levels in Anderlecht for December

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

December Sunshine in Anderlecht

In Anderlecht, Belgium, the sun shines progressively brighter as the year unfolds, with December ushering in a modest 143 hours of daylight. While this is a decline from the sun’s peak in the summer months, it still reflects a resilient pattern in the region's seasonal light. After basking in the brilliance of July's impressive 406 hours, the days gradually shorten, showcasing the beauty of autumn's retreat and winter's embrace. As the calendar turns to the final month of the year, December’s sunlight serves as a gentle reminder of the cyclical nature of seasons, paving the way for the rejuvenation of the coming spring.

Monthly Sunshine Duration in Anderlecht: December Highlighted

The December sunshine duration represents the total number of hours Anderlecht experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec121h200h266h346h394h398h406h379h319h240h190h143h
Data source: Anderlecht December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Anderlecht During December

In Anderlecht, Belgium, the chances of experiencing sunny weather take a notable dip in December, with only a 15% likelihood of sunshine. This marks a significant decrease from the brighter months preceding it, particularly the steadier climb seen from March's 40% to April's 50%. While December’s forecast often feels gloomy, it’s interesting to note that earlier months, such as February, offer a more favorable 30% chance of sun, suggesting a trend toward diminishing daylight as the year closes. As winter firmly establishes itself, the transition from autumn's 24% in November to December's 15% highlights the seasonal shift, inviting residents to seek warmth indoors rather than bask in sunny rays.

Percentage of Sunny Days in December in Anderlecht

The chart illustrates the percentage of sunny days in Anderlecht throughout the year, with December 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 Anderlecht experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec11%30%40%50%33%34%34%29%36%32%24%16%
Data source: Anderlecht December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Anderlecht in December

As the calendar turns to December in Anderlecht, Belgium, daylight dips to a modest 8 hours, mirroring the shorter days of January and November. This seasonal pattern highlights the stark transition from the elongated 16 hours of daylight in June to the brief moments of sunshine towards year’s end. Following a gradual increase in light throughout the spring and summer months, the daylight begins its descent in August, tapering off as the days grow colder. While December may offer less daylight, it also invites a cozy charm, encouraging a focus on the warmth of indoor gatherings as the world outside rests under winter’s embrace.

Average Daylight Hours in Anderlecht for December

The chart illustrates the variation in daylight duration in Anderlecht throughout the year, with December 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: Anderlecht daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Anderlecht

As December settles in Anderlecht, Belgium, the average wind speed reaches 4.2 m/s (approximately 9 mph), creating a brisk yet refreshing atmosphere. This marks a slight rise from the previous month's average of 3.3 m/s, hinting at a trend of increased winds as the year concludes. Interestingly, December's winds are stronger than the gentle breezes of summer, which saw speeds as low as 2.8 m/s in June. The winter months seem to bring a resurgence of more invigorating winds, with January and February also registering similar speeds. Overall, whether it’s the chill of winter or the serene summer days, Anderlecht’s winds weave a constant thread through the changing seasons, offering a unique charm to this vibrant city.

Average December Wind Speed in Anderlecht

The chart displays monthly wind speed patterns in Anderlecht, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.44.64.03.44.42.83.33.43.04.33.34.2 m/s
Data source: Anderlecht December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Anderlecht Compares to Other Months

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

In December, the weather tends to be milder compared to January, with average temperatures ranging from a low of -5°C (24°F) to a high of 15°C (59°F). The month experiences higher precipitation levels, totaling 93 mm (3.7 in) over 17 days, and a relatively high humidity of 92%. In contrast, January brings slightly cooler temperatures, with minimums dropping to -7°C (20°F) and maximums reaching only 14°C (57°F). This month also sees less precipitation, averaging 65 mm (2.5 in) over 12 days, and maintains a similar humidity level of 91%. For more detailed information on January's weather, you can check Anderlecht weather in January.

December and February in Anderlecht showcase notable contrasts in weather conditions. In December, temperatures range from a minimum of -5°C (24°F) to a maximum of 15°C (59°F), with an average temperature of 5°C (42°F). The month is quite damp, receiving about 93 mm (3.7 in) of precipitation over 17 days and featuring a high humidity level of 92%. In contrast, February experiences slightly colder minimum temperatures at -8°C (17°F) and warmer maximums reaching 19°C (66°F), with the same average of 5°C (42°F). Precipitation decreases to 69 mm (2.7 in) over 12 days, and humidity drops to 89%. Overall, while both months are relatively cool, February offers a hint of warmth with less rain compared to December. For more detailed insights, check out this link: Anderlecht weather in February.

December in Anderlecht features a chillier climate, with average temperatures ranging from a low of -5°C (24°F) to a high of 15°C (59°F), and a notable precipitation of 93 mm (3.7 in) over 17 days. The humidity is quite high at 92%, contributing to a crisp feel in the air. In contrast, March brings a gradual warming trend, with temperatures dipping to -8°C (17°F) at night and reaching a pleasant 23°C (74°F) during the day. Precipitation decreases to 70 mm (2.8 in) over 14 days, and the humidity also drops slightly to 87%. For more detailed information, check out Anderlecht weather in March.

December and April present striking contrasts in weather. In December, temperatures range from a chilly -5°C (24°F) at night to a milder daytime average of 5°C (42°F), peaking at 15°C (59°F). The month experiences significant precipitation, totaling 93 mm (3.7 in) spread over 17 days, with humidity lingering at a high 92%. In contrast, April ushers in a more temperate climate, with minimum temperatures around -4°C (26°F) and average highs reaching 10°C (50°F) to a warm 27°C (80°F). Rainfall is considerably less, at 37 mm (1.5 in) over just 8 days, and humidity decreases to 85%. For a closer look at specific weather patterns during this vibrant month, visit Anderlecht weather in April.

In December, temperatures in Anderlecht tend to be quite chilly, with minimums dropping to -5°C (24°F) and averaging around 5°C (42°F), while maximum temperatures reach 15°C (59°F). The month is characterized by high humidity at 92% and considerable precipitation, totaling 93 mm (3.7 in) across about 17 days. In contrast, May brings a more pleasant climate, with minimum temperatures climbing to 1°C (33°F) and an average of 13°C (57°F). The maximum can soar up to 31°C (88°F), resulting in fewer rainy days, with total precipitation at 58 mm (2.3 in) over 12 days and lower humidity at 82%. For a detailed overview, you can check Anderlecht weather in May.

The weather in December is significantly colder than in June, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F) and an average of 5°C (42°F). In contrast, June boasts much milder conditions, with temperatures varying from a minimum of 7°C (44°F) to a high of 32°C (91°F) and an average of 18°C (65°F). December experiences more precipitation, totaling 93 mm (3.7 in) over 17 days, while June receives 66 mm (2.6 in) over just 9 days. Additionally, December tends to have higher humidity at 92%, compared to June's 82%. For more details on the weather patterns, you can check Anderlecht weather in June.

In December, the weather is notably colder, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F). The month experiences higher precipitation, with about 93 mm (3.7 in) over 17 days and a humidity level of 92%. In contrast, July boasts warmer conditions, with temperatures ranging from a minimum of 8°C (46°F) to a scorching maximum of 39°C (102°F). Although July sees less precipitation at 71 mm (2.8 in) over 11 days, the humidity is lower at 80%, contributing to a more comfortable atmosphere for summer activities. For more details, visit Anderlecht weather in July.

In December, the weather is significantly colder, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F), and an average temperature of around 5°C (42°F). The month sees about 93 mm (3.7 in) of precipitation over roughly 17 days, along with a high humidity level of 92%.

In contrast, August offers much milder conditions, with minimum temperatures of 8°C (46°F) and maximums reaching up to 36°C (97°F), giving it an average temperature of 19°C (66°F). Precipitation is also lower at 80 mm (3.2 in) across approximately 14 days, coupled with a humidity level of 76%. This stark difference in weather patterns highlights the transition from the cold winter months to the warmth of summer. For more details on August weather, you can visit Anderlecht weather in August.

In December, the weather is significantly colder, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F) and an average temperature of around 5°C (42°F). The month experiences more precipitation, totaling 93 mm (3.7 in) over 17 days, and a high humidity level of 92%. In contrast, September boasts milder temperatures, with a minimum of 4°C (39°F) and a maximum of 33°C (91°F), averaging 15°C (60°F). The precipitation is also less, at 55 mm (2.2 in) across 9 days, and humidity is slightly lower at 82%. For more details on September weather, you can view Anderlecht weather in September.

In December, the weather significantly cools down compared to October, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F), resulting in a chillier average of 5°C (42°F). In contrast, October boasts milder temperatures, with a minimum of 1°C (34°F) and a maximum of 25°C (77°F), leading to a more comfortable average of 12°C (54°F). Additionally, December experiences higher precipitation levels, totaling 93 mm (3.7 in) over 17 days, compared to October's 76 mm (3.0 in) across 13 days. Humidity also rises in December to 92%, slightly surpassing October's 89%. For more detailed insights into October weather, you can visit Anderlecht weather in October.

In comparing the weather between November and December, it is clear that December tends to be colder, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F), compared to November's milder range of -2°C (28°F) to 18°C (65°F). Additionally, December experiences more precipitation, measuring 93 mm (3.7 in) over 17 days, whereas November receives 57 mm (2.2 in) over just 11 days. Despite both months maintaining a high humidity level of 92%, December's colder temperatures and increased rainfall make it feel distinctly harsher. For more detailed information, take a look at Anderlecht weather in November.

Compare Anderlecht's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Anderlecht

As December settles in Anderlecht, the weather takes a noticeable turn with cooler temperatures and increased humidity, creating a distinct winter atmosphere unlike the milder months that precede it. This month often sees more frequent precipitation, contributing to a cozy, albeit damp ambiance that encourages residents and visitors alike to embrace the festive season indoors. With chilly days and longer nights, December invites you to layer up and enjoy warm gatherings, contrasting sharply with the warmer, drier conditions typical of earlier months. For a deeper understanding of what to expect throughout the year, check out the full details on Anderlecht Climate.