December Weather in Bouillon, Belgium

Last updated: August 21, 2025

December in Bouillon, Belgium offers a vibrant yet chilly atmosphere, where temperatures typically range from a brisk -5°C (24°F) at the lowest to a mild 14°C (58°F) at the height of the day. With an average temperature of 4°C (39°F), this month presents a cozy winter ambiance. Rain is a frequent visitor, as 19 days accumulate 146 mm (5.8 in) of precipitation, creating a serene, misty landscape. Coupled with a high humidity level of 93%, the weather often feels damp, wrapping the historic town in a mystical winter charm that beckons both residents and visitors to embrace the season's beauty.

December Temperature in Bouillon

In Bouillon, Belgium, December ushers in the briskness of winter, with temperatures typically ranging from a chill of -5°C (24°F) at night to a mild 14°C (58°F) during the day. The average temperature hovers around 4°C (39°F), signaling the shift towards the coldest months of the year. Compared to the preceding months, December marks a noticeable drop, with averages falling sharply from November's 6°C (43°F). This transition highlights the onset of winter, where frosty nights and crisp, cool days become the norm, painting the picturesque landscape of Bouillon in scenic wintry beauty. As the year closes, residents and visitors alike embrace the serene atmosphere that December brings, making it a uniquely charming time to explore the region.

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

The chart illustrates December temperature patterns in Bouillon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bouillon, 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).
JanFebMarAprMayJunJulAugSepOctNovDec363943495564656559524339
Data source: Temperature data for Bouillon 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 Bouillon

December in Bouillon, Belgium, marks a significant shift in precipitation patterns, with an average of 146 mm (5.8 in) of rain typically falling over 19 days. This increase not only highlights December as the wettest month of the year but also reflects a broader climatic trend seen throughout the winter season. In contrast to the milder months such as April and July, which recorded less than 80 mm of rain over fewer days, December's persistent rainfall often leads to a chilly, damp atmosphere. The month stands out, creating a stark reminder of the transition from the autumn's varied precipitation to winter's heavier and more frequent downpours, making it an essential time for those in Bouillon to prepare for the ongoing weather challenges.

December Precipitation Trends in Bouillon

The chart displays monthly precipitation patterns in Bouillon, 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 Bouillon, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec92909946797873777010280146
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Bouillon

As December arrives in Bouillon, Belgium, residents brace for the peak of the humid season, with levels climbing to 93%. This rise in humidity marks a notable trend, as the month closes the year with higher moisture content compared to the preceding months—most notably, November's 92%. Observing the year as a whole, there's a clear pattern of decreasing humidity from the start of the year, with figures steadily declining from 91% in January to a low of 76% in August. However, as autumn progresses, humidity levels surge once more, culminating in December's damp embrace. This cyclical fluctuation highlights Bouillon's characteristic humid climate, ensuring that even as winter sets in, the air remains rich with moisture.

December Average Humidity in Bouillon

This chart illustrates the average monthly humidity levels in Bouillon, 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 Bouillon is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%84%83%83%80%76%81%88%92%93%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Bouillon

In December, Bouillon, Belgium experiences a low UV Index of 1, indicating minimal sun exposure risk and an extended burn time of 45 minutes. This trend mirrors the earlier months of winter, where the UV index remains low with minimal fluctuations, averaging between 1 to 2 from November through January. As the year progresses into spring and summer, the UV levels rise steadily, peaking at 8 from May through August, showcasing the importance of sun safety during those peak months. However, come winter, the focus shifts back to enjoying the outdoors with less concern about sunburn. For detailed insights into UV trends throughout the year, check Bouillon UV Index.

Maximum UV Index Levels in Bouillon for December

The chart shows the monthly maximum UV Index (UVI) for Bouillon 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 Bouillon typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234688886421
Data source: Bouillon 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 Bouillon

December in Bouillon, Belgium, brings a gentle decline in sunshine, as captured by the 118 hours of bright daylight that grace the month. The transition into winter is marked by shorter days, contrasting sharply with the longest stretches of daylight experienced in the late spring and early summer months, where sunshine peaks at 404 hours in both June and July. As the year winds down, the decrease from November’s 178 hours signals the onset of a cozy winter ambiance, making December a time for reflection. While the clouds may gather more often, each sunbeam serves as a precious reminder of the vibrant warmth that will soon return, embracing the beauty of Bouillon's ever-changing seasons.

Monthly Sunshine Duration in Bouillon: December Highlighted

The December sunshine duration represents the total number of hours Bouillon 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.
JanFebMarAprMayJunJulAugSepOctNovDec107h183h248h342h387h404h404h384h317h245h178h118h
Data source: Bouillon December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bouillon During December

In Bouillon, Belgium, the likelihood of sunny weather in December is relatively low, sitting at just 16%. This trend follows a noticeable decline in sunshine hours as the year progresses, with December experiencing one of the least favorable conditions for sun-seekers. As autumn gives way to winter, the chance of clear skies sharply contrasts with the burgeoning chances of sunnier months like April, which boasts a 52% likelihood. Interestingly, while early winter months like December and January offer minimal sun exposure, the promise of spring begins to emerge in the following months, suggesting that those yearning for brighter days may find relief as the year turns.

Percentage of Sunny Days in December in Bouillon

The chart illustrates the percentage of sunny days in Bouillon 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 Bouillon experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec9%30%42%52%31%31%34%27%38%32%21%16%
Data source: Bouillon December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bouillon in December

In Bouillon, Belgium, December marks a return to shorter days as daylight dips to approximately 8 hours, mirroring the beginning of the year. This pattern of daylight duration reveals a rhythmic ebb and flow influenced by the changing seasons. Immediately prior, November offers a slight reprieve with 9 hours of light, but daylight steadily increases from the depths of winter in December through a steady climb culminating in June, where days stretch to a generous 16 hours. As spring approaches, daylight gradually lengthens, highlighting a gradual transition from the darker months of winter to the vibrant brightness of summer. The trend signifies not only the cyclical nature of daylight but also the anticipation that each additional hour of light brings, fostering a sense of renewal and hope as the year progresses.

Average Daylight Hours in Bouillon for December

The chart illustrates the variation in daylight duration in Bouillon throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 38m10h 6m11h 55m13h 47m15h 24m16h 14m15h 47m14h 21m12h 33m10h 42m9h 2m8h 10m
Data source: Bouillon daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Bouillon

In Bouillon, Belgium, December brings a gentle breeze with an average wind speed of 3.8 m/s (8 mph), marking a slight increase from the calmer months of September and November, which recorded 2.7 m/s (6 mph) and 3.1 m/s (7 mph) respectively. This subtle uptick hints at the winter's approach, as the wind speeds tend to fluctuate across the year. The winter months generally offer a more moderate environment compared to the gustier conditions of spring, where speeds peak around 4.3 m/s (10 mph) in both February and May. As the year winds down, the December air is crisp and invigorating, inviting visitors to embrace the seasonal charm of this picturesque town.

Average December Wind Speed in Bouillon

The chart displays monthly wind speed patterns in Bouillon, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.04.33.93.54.32.73.53.32.73.93.13.8 m/s
Data source: Bouillon December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Bouillon Compares to Other Months

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

In December, the temperatures in Bouillon range from a minimum of -5°C (24°F) to a maximum of 14°C (58°F), with an average of around 4°C (39°F). The month is characterized by high precipitation levels totaling 146 mm (5.8 in) over 19 days, coupled with high humidity at 93%. In contrast, January experiences slightly colder conditions, with temperatures dipping to a minimum of -8°C (18°F) and an average temperature of around 2°C (36°F). The maximum temperature for January is 12°C (54°F), and precipitation decreases to 92 mm (3.6 in) over just 13 days, with humidity hovering at 91%. For a more detailed look at the weather in Bouillon during this month, visit Bouillon weather in January.

In December, the weather is generally colder, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 14°C (58°F), and high humidity levels at 93%. This month experiences significant precipitation, with 146 mm (5.8 in) spread across 19 days. In contrast, February sees slightly milder weather, with minimum temperatures dropping to -9°C (16°F) and maximums reaching up to 19°C (66°F), while the average temperature remains similar at around 4°C (40°F). Precipitation is lower in February, totaling 90 mm (3.5 in) over 12 days, and the humidity decreases slightly to 89%. For those interested in more details on February weather, check out Bouillon weather in February.

In December, temperatures tend to be quite chilly, with a minimum of -5°C (24°F) and an average of 4°C (39°F), peaking at a maximum of 14°C (58°F). This month sees significant precipitation, accumulating to 146 mm (5.8 in) over approximately 19 days, and the humidity remains high at 93%.

In contrast, March experiences slightly milder temperatures, with a minimum of -11°C (12°F) and an average of 6°C (44°F), while highs can reach up to 22°C (72°F). Precipitation in March is less intense at 99 mm (3.9 in) over around 16 days, and humidity drops to 86%. For more details about the weather in March, you can check Bouillon weather in March.

In December, the weather is typically cold and damp, with average temperatures around 4°C (39°F) and a minimum temperature that can drop to -5°C (24°F). This month sees considerable precipitation, with about 146 mm (5.8 in) falling over approximately 19 days, and a high humidity level of 93%. In contrast, April brings a much milder climate, with average temperatures rising to around 9°C (49°F) and a maximum of 26°C (79°F), allowing for more pleasant outdoor activities. Additionally, April experiences significantly less rainfall, with only 46 mm (1.8 in) over about 9 days and relatively lower humidity at 84%. For a closer look at the weather conditions during this spring month, check out Bouillon weather in April.

December and May present starkly contrasting weather conditions. In December, temperatures range from a chilly -5°C (24°F) at night to a mild 14°C (58°F) during the day, with an average temperature of around 4°C (39°F). The month is notably wet, with 146 mm (5.8 in) of precipitation spread over 19 days, and high humidity levels at 93%. In contrast, May ushers in warmer temperatures, with nighttime lows of 0°C (32°F) and daytime highs reaching up to 30°C (87°F), resulting in an average of 13°C (55°F). The precipitation in May is significantly lower at 79 mm (3.1 in), occurring over 13 days, and humidity drops to 82%. For a detailed look at May weather specifically, visit Bouillon weather in May.

When comparing the weather in December and June, notable differences emerge. December typically experiences much colder temperatures, with a minimum that can drop to -5°C (24°F) and an average of 4°C (39°F), while June enjoys milder conditions, boasting a minimum of 5°C (42°F) and an average of 18°C (64°F). The maximum temperatures in December reach only up to 14°C (58°F), in stark contrast to June's highs that can soar to 32°C (90°F). Additionally, December is marked by higher precipitation, averaging 146 mm (5.8 in) over 19 days, compared to June's 78 mm (3.1 in) over just 13 days. Despite both months having elevated humidity levels, December's humidity is slightly higher at 93%, compared to June's 82%. For more information, you can check out Bouillon weather in June.

December and July present stark contrasts in weather patterns. In December, temperatures range from a chilling -5°C (24°F) at minimum to a relatively mild 14°C (58°F) at maximum, with an average temperature of 4°C (39°F). This month also experiences high humidity at 93%, often accompanied by significant precipitation totaling 146 mm (5.8 in) over 19 days.

In contrast, July offers a much warmer climate, with minimum temperatures starting at 7°C (46°F) and soaring to maximums of 39°C (102°F). The average temperature in July is a pleasant 18°C (66°F), and the humidity, while still notable at 80%, is significantly lower than in December. Rain is less frequent as well, totaling 73 mm (2.9 in) across just 11 days. For more detailed information, you can check Bouillon weather in July.

December and August present strikingly different weather patterns. In December, temperatures range from a chilly -5°C (24°F) to a maximum of 14°C (58°F), with an average of 4°C (39°F). The month is characterized by high humidity at 93% and significant precipitation, totaling 146 mm (5.8 in) over 19 days. In contrast, August enjoys milder conditions, featuring temperatures that span from a minimum of 5°C (41°F) to a scorching maximum of 36°C (97°F), with an average temperature of 18°C (65°F). Precipitation decreases to 77 mm (3.0 in) over 14 days, and humidity is more comfortable at 76%. For more details, you can check Bouillon weather in August.

When comparing the weather in December and September, it is evident that each month offers distinct conditions. December experiences much colder temperatures, with a minimum of -5°C (24°F) and an average of 4°C (39°F), while September boasts a milder minimum of 3°C (38°F) and a significantly warmer average of 15°C (59°F). Additionally, September can reach maximum temperatures of up to 33°C (92°F), far exceeding December's maximum of 14°C (58°F). Precipitation is also more frequent in December, with 146 mm (5.8 in) spread over 19 days, compared to September's 70 mm (2.8 in) over just 10 days. Humidity levels are higher in December at 93%, while September maintains a lower humidity of 81%. For a closer look at conditions during September, you can visit Bouillon weather in September.

When comparing the weather in December and October, it's clear that December tends to be colder and wetter. December experiences a minimum temperature of -5°C (24°F), with an average of 4°C (39°F) and a maximum of 14°C (58°F). In contrast, October sees milder temperatures, ranging from a minimum of 0°C (33°F) to an average of 11°C (52°F), peaking at 24°C (76°F). Additionally, December has higher precipitation levels, with 146 mm (5.8 in) over 19 days, compared to October’s 102 mm (4.0 in) across 13 days. This chillier and damp month also has a higher relative humidity of 93% compared to October's 88%. For more detailed information, you can check Bouillon weather in October.

December's weather is generally colder than November's, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 14°C (58°F), compared to November's milder range of -3°C (26°F) to 18°C (66°F). Additionally, December sees significantly more precipitation, totaling 146 mm (5.8 in) over 19 days, whereas November has only 80 mm (3.2 in) over 13 days. Humidity remains high in both months, with December at 93% and November slightly lower at 92%. For detailed information on November's weather, check out Bouillon weather in November.

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Conclusion: What to Expect From December Weather in Bouillon

As December settles in Bouillon, the weather takes a distinctive turn, marked by cooler temperatures and increased precipitation compared to other months. With the average temperature hovering around 4°C, visitors can expect a chillier atmosphere, while humidity levels soar to an impressive 93%, contributing to the feeling of briskness. December's frequent rainfall, occurring on nearly half the days of the month, adds to the region's enchanting winter charm, making it a unique time to experience Bouillon. For those interested in a comprehensive look at the climate, visit Bouillon Climate.