December Weather in Ixelles, Belgium

Last updated: August 21, 2025

In Ixelles, Belgium, December presents a blend of chilly temperatures and frequent precipitation. With a maximum of 15°C (59°F) and an average of 5°C (42°F), the weather can feel quite brisk, especially as temperatures dip to a minimum of -5°C (24°F). December typically sees 93 mm (3.7 in) of rainfall spread across 17 days, contributing to the high humidity of 92% that envelops the region. This month encapsulates the essence of winter, making it a picturesque yet damp time in Ixelles, perfect for cozy indoor activities and festive celebrations.

December Temperature in Ixelles

In Ixelles, Belgium, December serves as a transition into the chill of winter, with temperatures typically ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F). The average temperature hovers around 5°C (42°F), reflecting a crispness in the air that invites festive celebrations. As the year draws to a close, the colder weather of December marks a notable dip from the milder temperatures seen in November, where averages were around 7°C (45°F). The city begins to embrace the winter atmosphere, presenting cool days that often lead to a picturesque, frost-kissed landscape. While the temperatures may be brisk, the charm of Ixelles is brought to life with holiday lights and lively gatherings, making it a delightful time to experience the city's winter spirit.

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

The chart illustrates December temperature patterns in Ixelles, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ixelles, 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 Ixelles 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 Ixelles

In December, Ixelles, Belgium sees a notable uptick in precipitation, with 93 mm (3.7 in) of rain spread over 17 days—the highest monthly total of the year. This seasonal surge contrasts sharply with the drier months earlier, particularly April and June, which recorded only 37 mm and 66 mm respectively. As the year wraps up, the weather becomes increasingly unpredictable, with nearly every day being a potential rain day. This trend reflects the typical transition into winter, as December’s persistent rain contributes to the overall chill, making it a quintessentially damp month before the year closes.

December Precipitation Trends in Ixelles

The chart displays monthly precipitation patterns in Ixelles, 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 Ixelles, 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 Ixelles

In Ixelles, Belgium, December wraps up the year with humidity levels reaching 92%, matching the peaks of the previous months, especially November. This consistent high humidity indicates a trend of moisture retention in the winter months, with levels generally hovering around the 80% to 92% range from mid-autumn through to the new year. Interestingly, while summer months typically present a dip in humidity, a gradual increase is observed as the year transitions to winter, emphasizing the wetter, chillier climate of December. Overall, residents can expect a damp and cozy end to the year, making it perfect for warm beverages and indoor gatherings.

December Average Humidity in Ixelles

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

In Ixelles, Belgium, the UV Index trends reveal a significant seasonal variation throughout the year. December sees a low UV Index of 1, allowing for a comfortable exposure time of 45 minutes before the risk of sunburn increases. This pattern of low UV levels follows a gradual rise from the depths of winter, where both January and February also maintain a low index of 1 and 2, respectively. As spring approaches, the UV Index escalates to moderate levels of 4 and 5 in March and April, indicating a shift that necessitates more conscious sun protection. The summer months experience a peak, with UV levels soaring to very high at 8 during June and July, prompting the need for diligent precautions with burn times dropping to just 15 minutes. The trend then reverts to moderate and low in the fall and winter, with November and December offering extended burn times once again. For those curious about seasonal sun exposure, details can be found at Ixelles UV Index.

Maximum UV Index Levels in Ixelles for December

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

In Ixelles, Belgium, December brings a gentle farewell to the year with a modest 143 hours of sunshine. This is a significant drop compared to the vibrant days of summer, where July shines the brightest with 406 hours. As the seasons shift, sunlight begins its graceful decline from May’s peak at 394 hours to the shorter days of winter. Interestingly, this pattern unveils a gradual transition from the lush expanses of spring, which bless us with 346 hours in April, to the cozy ambiance of winter months, where cloudier skies take hold. While December isn’t the sunniest month, it serves as a reminder of the rich tapestry of light we experience through the year, highlighting the seasonal rhythms that define life in Ixelles.

Monthly Sunshine Duration in Ixelles: December Highlighted

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

Chance of Sun in Ixelles During December

In Ixelles, Belgium, the likelihood of enjoying sunny weather in December is notably low, sitting at a mere 15%. This trend reflects a gradual decline in sunshine opportunities as the year progresses into winter. For context, the sunniest months peak in spring, with April reaching a promising 50% of sunshine, but by the time December rolls around, residents can expect overcast skies more frequently. With November already providing only 24% chance of sun, December's figures suggest that bundling up and seeking indoor activities might be the best approach as the year draws to a close.

Percentage of Sunny Days in December in Ixelles

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

Daylight Hours in Ixelles in December

In Ixelles, Belgium, the cycle of daylight duration paints a vivid picture of seasonal change. As the year transitions from winter to summer, daylight steadily increases from a mere 8 hours in January to a peak of 16 hours in June, bathing the city in natural light. This gradual ascent is accompanied by a delightful return to longer evenings, with May showcasing 15 hours of daylight, inviting outdoor gatherings. However, as summer wanes, the transition back to shorter days begins, with daylight hours decreasing to 12 in September and dropping again to 10 hours by October. December mirrors January’s early winter chill with 8 hours of daylight, highlighting the cyclical nature of light in this vibrant neighborhood. Through these fluctuations, Ixelles experiences a beautiful rhythm of brightness and darkness, offering a unique charm throughout the year.

Average Daylight Hours in Ixelles for December

The chart illustrates the variation in daylight duration in Ixelles 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: Ixelles daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Ixelles

As December wraps up the year in Ixelles, Belgium, the winds pick up slightly, with an average speed of 4.2 m/s (9 mph), making it one of the brisker months. This increase follows a pattern observed throughout the colder months, where wind speeds tend to fluctuate less dramatically compared to the milder spring and summer. Notably, December's winds are reminiscent of the early winter months, where January and February both boast similar averages. However, as we transition from the gentle breezes of summer—peaking in June at a mere 2.8 m/s (6 mph)—the gusts of December signal a refreshing shift that prepares the region for the chill of winter ahead. Thus, while the year may end on a breezy note, the trends highlight a landscape of wind that dances gracefully between the energetic and the serene across the months.

Average December Wind Speed in Ixelles

The chart displays monthly wind speed patterns in Ixelles, 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: Ixelles December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Ixelles Compares to Other Months

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

December and January exhibit notably similar weather patterns, though January tends to be slightly colder. 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 experiences 93 mm (3.7 in) of precipitation over 17 days, accompanied by a high humidity of 92%. In contrast, January sees temperatures dipping further, with a minimum of -7°C (20°F), an average of 4°C (39°F), and a maximum of 14°C (57°F). Precipitation decreases to 65 mm (2.5 in) over 12 days, with humidity slightly lower at 91%. For a more detailed look at January weather, you can visit Ixelles weather in January.

In December, temperatures range from a chilly -5°C (24°F) to a mild 15°C (59°F), with an average of 5°C (42°F). The month sees considerable precipitation, measuring 93 mm (3.7 in) over 17 days, and high humidity at 92%. In contrast, February features slightly colder conditions, with minimum temperatures dipping to -8°C (17°F), while the maximum reaches 19°C (66°F) and averages still sit at 5°C (42°F). Although February experiences less rainfall, totaling 69 mm (2.7 in) across 12 days, it has marginally lower humidity at 89%. For more detailed insights, you can check Ixelles weather in February.

In comparing the weather of December and March, December tends to be colder overall, with average temperatures ranging from a low of -5°C (24°F) to a high of 15°C (59°F), while March exhibits slightly warmer temperatures, with a minimum of -8°C (17°F) and a maximum of 23°C (74°F). December experiences more significant precipitation, with 93 mm (3.7 in) over 17 days, compared to March's 70 mm (2.8 in) spread over 14 days. Additionally, humidity levels in December are higher at 92%, compared to 87% in March, making the winter month feel a bit more oppressive. For a more detailed look at March weather in this region, you can visit Ixelles weather in March.

In December, temperatures range from a chilly -5°C (24°F) to a mild 15°C (59°F), with an average of 5°C (42°F). The month experiences significant precipitation, totaling 93 mm (3.7 in) over approximately 17 days, coupled with high humidity at 92%. In contrast, April offers a more pleasant climate with temperatures fluctuating between -4°C (26°F) and a warm 27°C (80°F), averaging around 10°C (50°F). Precipitation is significantly lower at 37 mm (1.5 in), spread over just 8 days, and humidity decreases to 85%. This highlights a distinct shift towards drier and warmer conditions as spring progresses. For more details, you can check Ixelles weather in April.

In December, the weather tends to be quite chilly, with temperatures ranging from a minimum of -5°C (24°F) to an average of 5°C (42°F) and a maximum of 15°C (59°F). The month is relatively wet, experiencing about 93 mm (3.7 in) of precipitation over 17 days and a high humidity level of 92%. In stark contrast, May brings a much milder climate, featuring temperatures that range from a minimum of 1°C (33°F) to an average of 13°C (57°F) and soaring to a maximum of 31°C (88°F). With only 58 mm (2.3 in) of precipitation over 12 days and a humidity level of 82%, May offers a significantly drier and warmer atmosphere. For a detailed look at May weather in Ixelles, visit Ixelles weather in May.

In December, the weather tends to be quite chilly, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F), and an average temperature of 5°C (42°F). The month experiences significant precipitation, totaling 93 mm (3.7 in) over 17 days, and high humidity at 92%. In stark contrast, June offers much milder weather, with temperatures varying from a minimum of 7°C (44°F) to a sizzling maximum of 32°C (91°F), and an average temperature of 18°C (65°F). Rainfall is lower in June at 66 mm (2.6 in) across just 9 days, with humidity slightly decreased at 82%. For more detailed information, you can check out the Ixelles weather in June.

December and July present stark contrasts in weather conditions. In December, temperatures range from a chilly -5°C (24°F) at their lowest to a mild 15°C (59°F) at their highest, with an average temperature of around 5°C (42°F). This month also sees considerable precipitation, totaling 93 mm (3.7 in) over 17 days, coupled with high humidity at 92%. In contrast, July boasts significantly warmer temperatures, with lows of 8°C (46°F) and highs soaring up to 39°C (102°F), averaging around 19°C (66°F). Precipitation in July is less frequent, amounting to 71 mm (2.8 in) across 11 days, and humidity levels are relatively lower at 80%. For more specific details on weather patterns in this vibrant month, check out the link: Ixelles weather in July.

In December, the weather is notably chilly, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F), averaging around 5°C (42°F). The month experiences a high level of humidity at 92% and sees precipitation on 17 days, totaling 93 mm (3.7 in). In stark contrast, August offers much warmer conditions, featuring a minimum temperature of 8°C (46°F) and a maximum that can reach up to 36°C (97°F), averaging 19°C (66°F). While August still experiences some rain, totaling 80 mm (3.2 in) over 14 days, the lower humidity of 76% contributes to a much more comfortable atmosphere. For more detailed insights into the warm and inviting atmosphere of this summer month, check out Ixelles weather in August.

In comparing December and September weather, it's clear that December tends to be much colder, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F), while September enjoys a substantially warmer climate, with temperatures reaching up to 33°C (91°F). Additionally, December experiences higher humidity levels at 92% compared to September's 82%, contributing to its chillier feel. Precipitation is also more frequent in December, with rain on about 17 days and a total of 93 mm (3.7 in), in contrast to September's 9 days of rain and 55 mm (2.2 in). For a closer look at September weather specifics in Ixelles, you can visit Ixelles weather in September.

In comparing the weather between December and October, we see a significant drop in temperatures. December features a minimum of -5°C (24°F) and an average of 5°C (42°F), while October has a more temperate minimum of 1°C (34°F) and an average of 12°C (54°F). This is further reflected in the maximum temperatures, with December reaching a high of 15°C (59°F) compared to October's comfortable 25°C (77°F). Precipitation also varies, with December experiencing 93 mm (3.7 in) over 17 days, slightly higher than October’s 76 mm (3.0 in) across 13 days. Additionally, humidity levels are slightly elevated in December at 92% compared to 89% in October. For more specific details about October's weather, check out Ixelles weather in October.

In comparing the weather patterns of December and November, December tends to be colder overall, with average temperatures ranging from a minimum of -5°C (24°F) to a maximum of 15°C (59°F), while November's temperatures are milder, from a minimum of -2°C (28°F) to a maximum of 18°C (65°F). Additionally, December sees more precipitation, averaging 93 mm (3.7 in) over 17 days, compared to November's 57 mm (2.2 in) across 11 days. Interestingly, both months maintain a high humidity level of 92%, contributing to a persistently damp atmosphere. For a closer look at November’s climate specifics, you can check Ixelles weather in November.

Compare Ixelles's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Ixelles

As December settles in, Ixelles transforms into a winter wonderland with its significantly cooler temperatures and heightened humidity. Unlike the milder months earlier in the year, this month ushers in a notable chill, where temperatures can dip to -5°C and average around 5°C. The landscape frequently graced by rain, showing up on approximately half the days, contributes to a total precipitation of 93 mm for the month. The combination of brisk air and damp conditions creates a characteristically cold December in Ixelles, inviting visitors to enjoy the charm of the season—perfect for cozy indoor activities or bracing outdoor adventures. For more details on the weather trends and conditions, visit Ixelles Climate.