December Weather in Genval, Belgium

Last updated: August 21, 2025

In Genval, Belgium, December brings a chill to the air with an average temperature of 5°C (42°F), peaking at a mild 15°C (59°F) and dipping to a frosty minimum of -4°C (24°F). The month is characterized by high humidity at 92%, creating a crisp atmosphere, while the region experiences significant precipitation, totaling 92 mm (3.6 in) across 17 rainy days. Whether it's the breathtaking, wintery charm or the cozy indoor escapes, December in Genval showcases a blend of tranquil beauty and seasonal delight.

December Temperature in Genval

December in Genval, Belgium marks the transition into winter, with temperatures starting to dip significantly. The month typically brings a low of -4°C (24°F) as the nights grow colder, yet the days offer a subtle warmth with an average of 5°C (42°F). Even though the maximum temperature can reach up to 15°C (59°F), winter's chill is unmistakable. As the year draws to a close, the chill sets in, creating a serene atmosphere perfect for cozy indoor activities or exploring the festive charm of the town. This month's mild highs reflect a gradual cooling trend from the warmer autumn months, giving residents and visitors alike a taste of the frosty beauty to come.

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

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

December Precipitation in Genval

December in Genval, Belgium, is marked by a significant uptick in precipitation, totaling 92 mm (3.6 in), making it the wettest month of the year. With 17 rainy days, December consistently outpaces the monthly average, showcasing a trend of increased rainfall as winter sets in. This surge in precipitation is a stark contrast to the drier months of April and May, which record much lower totals at 36 mm (1.4 in) and 60 mm (2.4 in), respectively. The persistent moisture not only underscores the season’s chill but also prepares the landscape for a vibrant winter scene, transforming Genval into a picturesque, albeit soggy, wonderland.

December Precipitation Trends in Genval

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

December Humidity in Genval

In Genval, Belgium, December marks the culmination of a trend in elevated humidity levels that has persisted throughout the year. As temperatures drop, the humidity rises to 92%, matching November's moist conditions, which are among the highest recorded months of the year. This high humidity, coupled with the chilling temperatures, creates a crisp and cool atmosphere typical of winter. Remarkably, the humidity levels have only been lower than this during the summertime months, specifically from June to August, where they hover around 76% to 82%. As the year concludes, residents and visitors alike can expect a damp and chilly environment, perfect for cozy indoor activities and warming up with hot beverages.

December Average Humidity in Genval

This chart illustrates the average monthly humidity levels in Genval, 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 Genval 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 Genval

In Genval, Belgium, December marks a return to a low UV Index of 1, providing a welcome respite from the higher levels seen in the summer months. Following the peak UV Index of 8 during July and June, early winter sees the burn time extend back to 45 minutes, similar to the beginning of the year. This trend underscores the significance of seasonal variations, as the UV Index gradually decreases from moderate levels in spring and early fall down to low as the year draws to a close. With primarily safe sun exposure, it’s an ideal time to enjoy the outdoors without the concern of sunburn. For more detailed insights, visit Genval UV Index.

Maximum UV Index Levels in Genval for December

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

In Genval, Belgium, December ushers in the twilight of the year with approximately 143 hours of sunshine, a notable decrease compared to the vibrant glow of summer months. As the year progresses from January to December, there’s a clear trend of increasing daylight hours, peaking in the warmth of July at 406 hours. This gradual rise throughout spring and summer months, particularly evident in May and June, showcases Genval's charm under the sun. However, as autumn sets in, the sunny hours dwindle, reflecting a seasonal shift towards shorter days and the cozy ambiance of winter. The contrast between lush summer luminosity and the subdued brightness of December paints a vivid picture of this picturesque locale’s seasonal rhythm.

Monthly Sunshine Duration in Genval: December Highlighted

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

Chance of Sun in Genval During December

In Genval, Belgium, December marks a significant dip in the likelihood of sunny weather, boasting only a 16% chance of sunshine. This decline is part of a broader trend observed throughout the colder months, where November already sees a modest 24% chance, reflecting a gradual decrease in sunlight as the year winds down. As we move from autumn to winter, the chances of basking in the sun diminish, with December trailing behind its preceding months and highlighting the atmospheric shift towards colder, cloudier days. It's a time when residents might want to embrace indoor activities, as the crisp air takes precedence over sunshine.

Percentage of Sunny Days in December in Genval

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

Daylight Hours in Genval in December

In Genval, Belgium, December brings a return to shorter days, with just 8 hours of daylight—a continuation of the trend from November. As the year progresses, daylight duration peaks in June with a generous 16 hours, gradually tapering off as summer yields to autumn. May boasts an inviting 15 hours, making it a favorite for outdoor enthusiasts. The transition from late spring into summer illustrates a gradual increase, peaking in mid-year before the slow decline begins, signaling the approach of winter. This rhythmic cycle of daylight not only marks the seasons but also influences the vibrant lifestyle in Genval, as residents and visitors embrace the longer days of warmer months and adapt to the cozy charm of the short, brisk days in winter.

Average Daylight Hours in Genval for December

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

December Winds in Genval

As December descends upon Genval, Belgium, the average wind speed reaches 4.2 m/s (9 mph), offering a brisk reminder of winter’s approach. This month stands out as the wind swells slightly from the more subdued breezes of late autumn, marking a return to a higher gust akin to what was felt in early winter months. Interestingly, December's winds are just a tad lower than January's average of 4.4 m/s (10 mph), indicating a trend of generally stable wind patterns throughout the colder months. While summer brought gentler zephyrs, averaging around 2.8 m/s (6 mph) in June, the winds pick up again in the latter half of the year, aiming to envelop Genval in a refreshing, invigorating chill as the year draws to a close.

Average December Wind Speed in Genval

The chart displays monthly wind speed patterns in Genval, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.44.64.13.44.42.83.43.43.04.43.44.2 m/s
Data source: Genval December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Genval Compares to Other Months

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

December and January exhibit notable similarities and differences in weather patterns. December tends to be slightly warmer, with an average temperature of 5°C (42°F) and a maximum of 15°C (59°F), while January sees a slight drop, averaging 4°C (39°F) with a maximum of 14°C (57°F). Precipitation is more frequent in December, occurring on 17 days with a total of 92 mm (3.6 in), compared to January's 12 days of rainfall and a total of 65 mm (2.6 in). Additionally, humidity levels are fairly consistent, with December at 92% and January at 91%. For more detailed insights, you can check Genval weather in January.

In December, temperatures typically range from a low of -4°C (24°F) to a high of 15°C (59°F), with an average temperature of 5°C (42°F). This month experiences about 92 mm (3.6 inches) of precipitation over approximately 17 days and has a high humidity level of 92%. In contrast, February sees slightly colder temperatures with a minimum of -9°C (17°F) and a maximum of 19°C (66°F), yet still maintains the same average of 5°C (42°F). Precipitation decreases to 70 mm (2.7 inches) over roughly 12 days, and humidity is slightly lower at 89%. For those interested in more detailed statistics, you can find additional information at Genval weather in February.

December and March present distinct weather patterns with notable differences in temperature and precipitation. In December, temperatures range from a minimum of -4°C (24°F) to a maximum of 15°C (59°F), averaging around 5°C (42°F) with high humidity at 92% and 17 days of precipitation totaling 92 mm (3.6 in). In contrast, March sees a slightly colder minimum temperature of -9°C (17°F) but can reach up to 23°C (74°F), averaging 7°C (45°F). Precipitation decreases to 71 mm (2.8 in) over 14 days, accompanied by a slightly lower humidity of 87%. For more details on the weather conditions, you can refer to Genval weather in March.

In December, the weather is characterized by cooler temperatures, with minimums dropping to around -4°C (24°F) and a maximum of only 15°C (59°F). The month experiences significant precipitation, totaling 92 mm (3.6 in) over 17 days, coupled with high humidity at 92%. In contrast, April ushers in milder conditions, with average temperatures rising to 10°C (50°F) and highs reaching up to 27°C (81°F). Precipitation is considerably lower in April, at just 36 mm (1.4 in) over 8 days, and humidity decreases slightly to 85%. For more details on the weather in April, you can check out Genval weather in April.

December and May offer starkly contrasting weather experiences. In December, temperatures range from a chilly minimum of -4°C (24°F) to a mild maximum of 15°C (59°F), with an average of only 5°C (42°F). The month is characterized by high humidity at 92% and frequent precipitation, accumulating 92 mm (3.6 in) over 17 days. In contrast, May brings a much warmer atmosphere, with temperatures starting at 0°C (33°F) and soaring to a pleasant maximum of 31°C (87°F), averaging 13°C (57°F). Although May also sees precipitation, it is significantly less, totaling 60 mm (2.4 in) over 13 days, with humidity slightly lower at 82%. For more detailed information, check out Genval weather in May.

December and June present contrasting weather conditions, highlighting the seasonal shift from winter to summer. In December, temperatures range from a chilly minimum of -4°C (24°F) to a more moderate maximum of 15°C (59°F), with an average of 5°C (42°F). The month experiences considerable precipitation, totaling 92 mm (3.6 in) over 17 days, coupled with high humidity levels at 92%. In contrast, June is much warmer, with temperatures varying from a minimum of 7°C (45°F) to a peak of 33°C (91°F), averaging at 18°C (65°F). Precipitation is lower in June at 72 mm (2.8 in) spread across just 11 days, and humidity levels are a bit reduced at 82%. For more details, check out Genval weather in June.

In December, the weather is notably colder, with temperatures ranging from a chilly -4°C (24°F) to a milder 15°C (59°F), while the average temperature hovers around 5°C (42°F). The month is characterized by higher humidity at 92% and more frequent precipitation, with rain falling on 17 days and a total of 92 mm (3.6 in). In contrast, July offers a much warmer climate, with temperatures starting at a minimum of 8°C (46°F) and soaring up to a maximum of 39°C (102°F), resulting in an average temperature of 19°C (66°F). Although July has lower precipitation at 74 mm (2.9 in) spread over just 11 days, the humidity is still elevated at 80%. For more detailed insights on the weather patterns in July, visit Genval weather in July.

In December, temperatures in Genval are typically much cooler, with a range from a chilly -4°C (24°F) to a maximum of 15°C (59°F), while August offers a warmer climate, with temperatures varying from 7°C (46°F) to a high of 36°C (97°F). December also experiences higher humidity at 92%, contributing to a more biting cold, in contrast to August’s lower humidity of 76% that makes the heat more manageable. Precipitation is relatively similar between the two months, with December receiving 92 mm (3.6 inches) over 17 days compared to August's 84 mm (3.3 inches) over 14 days. For a more detailed look at what to expect in August, you can check out Genval weather in August.

December and September present distinctly different weather patterns. In December, temperatures range from a chilly -4°C (24°F) at night to a mild 15°C (59°F) during the day, while September experiences much warmer conditions with temperatures between 4°C (39°F) and a peak of 33°C (91°F). Precipitation is more frequent in December, with 92 mm (3.6 in) falling over 17 days, compared to September's lighter rainfall of 58 mm (2.3 in) over just 10 days. Additionally, December's humidity is higher at 92%, while September's humidity sits at a still noticeable 82%. For more detailed information on September weather, visit Genval weather in September.

In December, the weather tends to be colder with temperatures ranging from a minimum of -4°C (24°F) to a maximum of 15°C (59°F), while October boasts a milder temperature range from a minimum of 1°C (35°F) to a maximum of 25°C (77°F). Additionally, December experiences more precipitation, averaging 92 mm (3.6 in) over approximately 17 days, compared to October's 78 mm (3.1 in) spread across 13 days. The humidity also rises slightly in December, reaching 92%, while October maintains a lower humidity level at 89%. For more detailed insights on October weather, you can visit Genval weather in October.

In comparing the weather of November and December, we see some notable differences. December tends to be slightly colder, with average temperatures ranging from a minimum of -4°C (24°F) to a maximum of 15°C (59°F), compared to November’s range of -3°C (28°F) to 18°C (65°F). Precipitation also increases in December, totaling 92 mm (3.6 in) over 17 days, whereas November receives only 57 mm (2.3 in) over 11 days. Interestingly, both months have the same level of humidity at 92%, but the increased rain and lower temperatures in December suggest a more wintry feel compared to the relatively milder November. For a more detailed look at the weather patterns in November, you can check Genval weather in November.

Compare Genval's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Genval

December in Genval marks a significant shift as the year draws to a close, offering a cool yet captivating atmosphere. With average temperatures dipping to around 5°C, this month is notably chillier compared to the milder autumn months. The high humidity of 92% combined with frequent precipitation—occurring on roughly half the days—creates a unique blend of crisp air and damp conditions that can feel quite different from the preceding months. Exploring Genval during this time offers a chance to experience its scenic beauty under a serene, wintry veil. For more information on the seasonal variations, check out the detailed Genval Climate.