December Weather in Mechelen, Belgium

Last updated: August 21, 2025

December in Mechelen, Belgium, presents a chilly and moist atmosphere, with temperatures ranging from a maximum of 15°C (60°F) to a brisk minimum of -5°C (23°F). The average temperature hovers around 6°C (42°F), setting the scene for a quintessential winter month. Residents and visitors can expect frequent rain, with 88 mm (3.5 in) of precipitation spread over 16 days, contributing to a notable humidity level of 92%. This blend of cool temperatures and damp conditions creates a picturesque backdrop for holiday festivities and cozy indoor gatherings in the charming city of Mechelen.

December Temperature in Mechelen

In December, Mechelen experiences a noticeable drop in temperatures as winter settles in. The month typically sees minimum temperatures around -5°C (23°F), with average highs reaching only 15°C (60°F). As the year draws to a close, the average temperature lingers at 6°C (42°F), showcasing the chill that characterizes this time. Compared to the preceding months, December's temperatures reflect a distinct shift, transitioning from the more moderate conditions of November, where a higher average of 7°C (46°F) was recorded. This trend highlights a gradual descent into the cooler embrace of winter, urging residents and visitors alike to bundle up as festive events light up the city against the crisp backdrop of the season.

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

The chart illustrates December temperature patterns in Mechelen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mechelen, 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).
JanFebMarAprMayJunJulAugSepOctNovDec404245505765666660554542
Data source: Temperature data for Mechelen 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 Mechelen

In Mechelen, Belgium, December emerges as the wettest month of the year, registering a notable 88 mm (3.5 in) of precipitation over 16 days. This marks a significant shift compared to the preceding months, with average monthly rainfall typically peaking around 77 mm (3.0 in) in October. December's increased precipitation can be attributed to the onset of winter weather patterns, which often bring prolonged spells of rain. The trend of higher precipitation during this month not only sets it apart from earlier autumn months but also prepares the landscape for the cold months ahead, where nature replenishes itself in anticipation of the spring thaw. With more rainy days, the festive season often unfolds under a tapestry of wintery showers, adding a unique charm to the holiday atmosphere in Mechelen.

December Precipitation Trends in Mechelen

The chart displays monthly precipitation patterns in Mechelen, 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 Mechelen, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec626768355764717450775388
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Mechelen

As the year draws to a close, December in Mechelen, Belgium, brings a notable increase in humidity, sitting at a robust 92%. This level mirrors the high humidity experienced in November, creating a distinctly damp atmosphere as winter settles in. Observing the monthly trends, it's evident that humidity levels tend to rise towards the year's end, with the coldest months, January and February, consistently showcasing elevated humidity levels around 89% to 91%. Transitioning from the comparatively drier summer months of July and August, where humidity dipped to 76%, the latter part of the year reintroduces significant moisture, adding to the chill of the season and influencing the overall climate of Mechelen.

December Average Humidity in Mechelen

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

In Mechelen, Belgium, the UV Index in December presents a low exposure category, with a value of 1. This means residents and visitors can enjoy outdoor activities without the immediate concern of sunburn, as the burn time is a generous 45 minutes. Following the trend from the preceding months, the UV Index typically remains relatively low during winter, demonstrating a shift from higher values seen in the summer months, where indices surged to 8 in June and July. November saw a slight decrease to 2, and as the year wraps up, December remains consistent with the winter pattern. For more detailed information on UV levels throughout the year, explore the Mechelen UV Index.

Maximum UV Index Levels in Mechelen for December

The chart shows the monthly maximum UV Index (UVI) for Mechelen 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 Mechelen typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Mechelen 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 Mechelen

In Mechelen, Belgium, the December sunshine marks a noticeable decline from the vibrant hours of light earlier in the year, totaling just 143 hours. Following a peak in the sun-soaked summer months of June and July, where sunlight soared to 400 and 411 hours respectively, the gradual descent into winter is evident as October sees 241 hours and November dips further to 191 hours. This trend underscores the natural rhythm of seasons, where the long, bright days give way to the shorter, cooler months, painting a picture of Mechelen transition from the warmth of summer to the crispness of winter, inviting moments of reflection and coziness as the year draws to a close.

Monthly Sunshine Duration in Mechelen: December Highlighted

The December sunshine duration represents the total number of hours Mechelen 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.
JanFebMarAprMayJunJulAugSepOctNovDec120h203h272h348h397h400h411h383h320h241h191h143h
Data source: Mechelen December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Mechelen During December

In Mechelen, Belgium, the likelihood of sunny weather takes a noticeable dip in December, with only a 17% chance to see the sun brightening the winter skies. This marks a significant decrease from the preceding months, especially when you compare it to the more promising conditions of April at 47% and March with 39%. Following a trend of gradually waning sunshine from November’s 23%, December's sunless days signal the onset of winter, emphasizing the chilly and often overcast atmosphere typical of this season. As the year closes, residents and visitors alike may find themselves longing for the brighter days of early spring, highlighting a seasonal shift that drives the cozy charm of Mechelen’s winter landscape.

Percentage of Sunny Days in December in Mechelen

The chart illustrates the percentage of sunny days in Mechelen 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 Mechelen experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec11%31%39%47%33%34%34%31%34%31%24%17%
Data source: Mechelen December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Mechelen in December

As winter settles in, December brings a notable dip in daylight duration in Mechelen, Belgium, with only 7 hours of sunlight each day. This marks the lowest point of the year, following the gradual decline from 15 hours in May and the summer peak of 16 hours in June. The shift from the long, vibrant days of summer to the short, wintry afternoons of December highlights a clear seasonal trend. As the year draws to a close, residents experience a stark contrast to the brighter months, prompting a cozy embrace of indoor activities amidst the early sunsets.

Average Daylight Hours in Mechelen for December

The chart illustrates the variation in daylight duration in Mechelen throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 27m10h11h 55m13h 52m15h 34m16h 27m15h 59m14h 27m12h 34m10h 38m8h 53m7h 58m
Data source: Mechelen daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Mechelen

As December settles over Mechelen, Belgium, the average wind speed reaches a brisk 3.9 m/s (9 mph), a figure that hints at the wintry gusts characteristic of the season. While this speed is notably higher than the gentle breezes of summer months, such as June at 2.7 m/s (6 mph), it represents a return to a more invigorating chill compared to the milder 3.2 m/s (7 mph) of November. Observing the trends throughout the year, the winds begin to pick up again in the autumn months, peaking slightly in December as if preparing for the onset of winter. As the year draws to a close, the persistent winds invite residents to bundle up and embrace the crisp climate that December brings to this charming Belgian city.

Average December Wind Speed in Mechelen

The chart displays monthly wind speed patterns in Mechelen, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.24.33.83.34.12.73.23.22.94.13.23.9 m/s
Data source: Mechelen December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Mechelen Compares to Other Months

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

In December, the weather tends to be slightly milder, with average temperatures around 6°C (42°F) and a maximum reaching 15°C (60°F). However, this month also experiences more precipitation, totaling 88 mm (3.5 in) over approximately 16 days, resulting in high humidity levels of 92%. In contrast, January is cooler, with average temperatures dipping to 4°C (40°F) and a minimum of -6°C (21°F). Precipitation decreases to 62 mm (2.4 in) over 11 days, and humidity remains relatively stable at 91%. For more detailed information on the weather patterns during this month, you can visit Mechelen weather in January.

December and February present distinct weather patterns, with December generally being colder and wetter. In December, temperatures range from a minimum of -5°C (23°F) to a maximum of 15°C (60°F), with an average of 6°C (42°F). The month experiences significant precipitation, totaling 88 mm (3.5 in) over 16 days, and a high humidity level of 92%. In contrast, February sees slightly lower minimum temperatures at -9°C (16°F) but can peak higher at 19°C (66°F), maintaining the same average of 6°C (42°F). Precipitation decreases to 67 mm (2.6 in) over 12 days, and humidity is a bit lower at 89%. Overall, February tends to be drier and offers a slightly more temperate feel, despite its chillier lows. For a more detailed look at February weather, visit Mechelen weather in February.

December and March showcase distinct weather patterns, highlighting the transition from winter to spring. In December, temperatures typically range from a chilly -5°C (23°F) to a moderate 15°C (60°F), with an average of 6°C (42°F). The month is characterized by high humidity at 92% and significant precipitation of 88 mm (3.5 in) over 16 days. In contrast, March experiences a slightly wider temperature range, with lows of -7°C (19°F) and highs soaring up to 23°C (74°F), resulting in an average of 7°C (46°F). While March has less precipitation at 68 mm (2.7 in) over 13 days and slightly lower humidity at 87%, it marks a clear shift towards milder and more variable weather. For more insights on March's climate, visit Mechelen weather in March.

In December, the weather is considerably colder, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 15°C (60°F), and an average temperature of 6°C (42°F). The month sees significant precipitation of 88 mm (3.5 in) spread over 16 days, along with high humidity levels at 92%. In contrast, April experiences milder temperatures, with a minimum of -4°C (26°F), an average of 10°C (51°F), and a warm maximum of 28°C (82°F). Precipitation drops to 35 mm (1.4 in) over just 7 days, and humidity is slightly lower at 85%. The shift from December to April signifies a transition to more comfortable and vibrant weather conditions. For more details, you can check Mechelen weather in April.

December and May present contrasting weather conditions. In December, temperatures range from a chilly -5°C (23°F) at their lowest to a milder 15°C (60°F), with an average temperature of about 6°C (42°F). The month is characterized by high humidity at 92% and considerable precipitation, totaling 88 mm (3.5 inches) over 16 days. In stark contrast, May sees much warmer temperatures, with a minimum of 1°C (34°F) and a maximum reaching up to 32°C (89°F), averaging around 14°C (57°F). Precipitation in May is lower at 57 mm (2.3 inches) and occurs over just 12 days, accompanied by a more comfortable humidity level of 82%. This seasonal shift significantly influences outdoor activities and the overall atmosphere. For more detailed information, check out Mechelen weather in May.

December and June present stark contrasts in weather patterns. In December, temperatures range from a chilly minimum of -5°C (23°F) to a mild maximum of 15°C (60°F), with an average of 6°C (42°F). This month experiences frequent precipitation, totaling 88 mm (3.5 in) over about 16 days, coupled with high humidity at 92%. In contrast, June brings much warmer temperatures, with a minimum of 8°C (46°F), an average of 18°C (65°F), and a maximum soaring to 33°C (92°F). Precipitation is less frequent in June, totaling 64 mm (2.5 in) over just 9 days, and the humidity is slightly lower at 82%. For a closer look at June weather specifics, visit Mechelen weather in June.

December and July present striking contrasts in weather. In December, temperatures can plummet to a minimum of -5°C (23°F), with an average temperature of 6°C (42°F) and highs reaching 15°C (60°F). The month is characterized by high humidity at 92% and considerable precipitation of 88 mm (3.5 in) spread over 16 days, creating a chilly and damp atmosphere. In stark contrast, July boasts milder temperatures, with a minimum of 8°C (47°F), an average of 19°C (67°F), and maximums soaring up to 39°C (103°F). Precipitation is lower at 71 mm (2.8 in) over just 10 days, and the humidity sits at a more comfortable 80%. For those interested in exploring July's weather specifics, additional details can be found at Mechelen weather in July.

The comparison of December and August weather reveals stark contrasts between the two months. December is much cooler, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 15°C (60°F), and experiences high humidity at 92%. It also has more precipitation, averaging 88 mm (3.5 inches) over 16 days. In contrast, August boasts milder temperatures, from a minimum of 8°C (47°F) to a sweltering maximum of 36°C (96°F), accompanied by lower humidity at 76% and less precipitation, totaling 74 mm (2.9 inches) over 13 days. For a detailed look at the specifics of this summer month, check out Mechelen weather in August.

December and September showcase stark contrasts in weather. In December, temperatures range from a chilly minimum of -5°C (23°F) to a mild maximum of 15°C (60°F), averaging around 6°C (42°F). The month sees significant precipitation, totaling 88 mm (3.5 in) over 16 days, alongside high humidity levels at 92%. In contrast, September offers a much warmer climate with minimum temperatures of 4°C (39°F) and maximums reaching 33°C (93°F), averaging a comfortable 16°C (60°F). Precipitation is less frequent in September, totaling 50 mm (2.0 in) over just 9 days, and the humidity is slightly lower at 82%. For more detailed information, you can check Mechelen weather in September.

In comparing the weather between December and October, it's clear that December is significantly colder, with temperatures ranging from a chilling -5°C (23°F) at its lowest to a milder 15°C (60°F) at its highest, leading to an average of 6°C (42°F). In contrast, October welcomes warmer conditions, with temperatures varying from a minimum of 2°C (35°F) to a maximum of 26°C (79°F), resulting in a more pleasant average of 13°C (55°F). Additionally, December experiences more precipitation, at 88 mm (3.5 in) over 16 days, compared to October's 77 mm (3.0 in) across 12 days. Although both months have high humidity, December's humidity is slightly higher at 92%, compared to October's 89%. For more details, you can check Mechelen weather in October.

In comparing the weather of December and November, December tends to be slightly colder, with temperatures ranging from a minimum of -5°C (23°F) to a maximum of 15°C (60°F), while November experiences milder temperatures, with a minimum of -3°C (28°F) and a maximum of 19°C (66°F). Additionally, December is wetter, receiving 88 mm (3.5 in) of precipitation over 16 days compared to November's 53 mm (2.1 in) across 10 days. Both months have high humidity levels at 92%, but the increased rainfall in December contributes to a noticeably different atmospheric feel. For more details, check out Mechelen weather in November.

Compare Mechelen's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Mechelen

December in Mechelen brings a significant shift in weather, with colder temperatures and heightened humidity that sets it apart from the milder months. The city experiences a notable increase in precipitation, with frequent rainy days that contribute to a damp atmosphere. This chilly month, with its potential for frost, invites a cozy ambiance reminiscent of winter festivities. For those planning to visit or simply seeking to understand Mechelen's climate, you can find more detailed information here: Mechelen Climate.