December Weather in Flensburg, Germany

Last updated: February 26, 2025

December in Flensburg, Germany, is characterized by a cool and often damp climate, with average temperatures hovering around 4°C (40°F). The month sees a maximum temperature of 11°C (53°F) and can dip as low as -11°C (13°F), presenting a chilly atmosphere. Rainfall is prevalent, with 66 mm (2.6 in) of precipitation spread across 14 days, creating a sense of wintery ambiance. With humidity levels peaking at 87%, the air feels distinctly crisp, making December a quintessentially chilly month to experience in this picturesque northern town.

December Temperature in Flensburg

In December, Flensburg, Germany experiences a significant drop in temperatures as winter takes hold. The month kicks off with minimums around -11°C (13°F), setting the stage for chilly days ahead. Average temperatures hover around 4°C (40°F), providing a brisk coolness tempered by the promise of warmth from cozy indoor settings. While the maximum temperature reaches 11°C (53°F), giving a fleeting hint of milder winter days, there's a notable contrast to the milder fall temperatures that precede it. This pattern highlights the transition into a more severe winter climate, with residents embracing the cold as they prepare for festive celebrations that characterize the season.

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

The chart illustrates December temperature patterns in Flensburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec383740465362636458524439
Data source: Temperature data for Flensburg 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 Flensburg

December in Flensburg, Germany, sees an average precipitation of 66 mm (2.6 in), featuring about 14 rainy days that contribute to the city's lush winter landscape. As the year's end approaches, the precipitation amount slightly increases compared to November's 55 mm, suggesting a trend of intensified moisture during the colder months. This pattern builds upon a noteworthy peak in October with 91 mm, indicating that December continues to embrace the wet climate typical of late autumn and early winter. While December is not the driest month, it marks a transitional phase where the chill in the air often accompanies a steady rhythm of light rain, creating a cozy atmosphere perfect for enjoying the holiday season.

December Precipitation Trends in Flensburg

The chart displays monthly precipitation patterns in Flensburg, 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.
JanFebMarAprMayJunJulAugSepOctNovDec556370417058808272915566
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Flensburg

In Flensburg, Germany, December maintains a notable humidity level of 87%, which aligns closely with the figures observed in the preceding months of October and November. As the year progresses, a gradual decline in humidity can be seen from a high of 89% in January to the lower 79% in May. This trend suggests a shift towards drier conditions during the spring and summer, peaking again towards the end of the year. The consistency of December's humidity reflects a stable climate, setting the tone for the winter months as the region braces for colder temperatures and potential seasonal changes.

December Average Humidity in Flensburg

This chart illustrates the average monthly humidity levels in Flensburg, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%84%79%75%76%77%84%87%88%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Flensburg

In December, Flensburg experiences a low UV Index of 1, signaling minimal sun exposure risk for residents and visitors alike. With a burn time of 45 minutes, the cool winter air allows for safe outdoor activities without the immediate concern of sunburn. This month caps off a year where the UV Index fluctuated, peaking during the summer months of June and July with values of 8 and 7, respectively. As daylight hours shorten and temperatures drop, the trend clearly shifts toward reduced UV radiation, leading to more leisurely winter days. For more detailed information on UV Index trends throughout the year, visit Flensburg UV Index.

Maximum UV Index Levels in Flensburg for December

The chart shows the monthly maximum UV Index (UVI) for Flensburg 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.
JanFebMarAprMayJunJulAugSepOctNovDec123568765321
Data source: Flensburg 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 Flensburg

In Flensburg, Germany, the daylight dance takes a subtle turn as December greets its residents with 118 hours of sunshine, a stark contrast to the sun-drenched days of summer. As the year progresses, the sun tends to shine brightest in the height of summer, with July basking in a generous 435 hours. This pattern of fluctuating sunlight is indicative of the changing seasons, with winter months consistently offering less. However, December's sunlight, while diminished, still provides a soft glow amidst the chill of winter, hinting at the increase that awaits in spring. Each month showcases the rhythmic ebb and flow of daylight, inviting both reflection and the anticipation of brighter days ahead.

Monthly Sunshine Duration in Flensburg: December Highlighted

The December sunshine duration represents the total number of hours Flensburg 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.
JanFebMarAprMayJunJulAugSepOctNovDec101h181h258h364h416h426h435h401h315h248h160h118h
Data source: Flensburg December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Flensburg During December

In Flensburg, Germany, the likelihood of sunny weather in December sits at a modest 20%, positioning it among the months with lower chances of sunshine, especially following the 17% in November. Notably, December's sunshine probability is slightly higher than that of the preceding month, hinting at a subtle seasonal uptick as the year draws to a close. This trend contrasts with the gradual increase seen in spring, where the chances rise significantly from 18% in January to 49% in April. As the winter months linger, Flensburg seems to embrace the quiet calm of the season, offering only fleeting glimpses of sunshine against the backdrop of colder, often overcast skies.

Percentage of Sunny Days in December in Flensburg

The chart illustrates the percentage of sunny days in Flensburg 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 Flensburg experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec18%27%36%49%23%35%30%35%28%27%17%20%
Data source: Flensburg December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Flensburg in December

In Flensburg, Germany, the daylight duration follows a beautiful seasonal rhythm, peaking in the long summer months and dipping to its shortest in winter. Starting from December, when the city experiences just 7 hours of daylight, the trend gradually shifts as the year progresses. January mirrors this with the same amount of daylight, but by February, an increase to 9 hours signals the gradual return of light. The days continue to lengthen, reaching a vibrant 16 hours in May and 17 hours in June, offering ample time for outdoor activities under the sun. As summer wanes, the daylight begins to decrease, descending back to 14 hours in August and tapering down to 7 hours again by December. This cyclical pattern not only marks the changing seasons but also brings a rich variety of experiences throughout the year, from the long, sun-soaked days of summer to the cozy, candle-lit evenings of winter.

Average Daylight Hours in Flensburg for December

The chart illustrates the variation in daylight duration in Flensburg throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 53m9h 42m11h 53m14h 8m16h 7m17h 11m16h 37m14h 49m12h 39m10h 25m8h 24m7h 18m
Data source: Flensburg daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Flensburg

In December, the winds in Flensburg, Germany, pick up slightly with an average speed of 4.3 m/s (10 mph), reflecting a seasonal trend of heightened gusts during the winter months. Observing the data throughout the year, it's evident that the wind speeds generally hover around 4 m/s, with noticeable peaks in October and February at 4.6 m/s (10 mph). The summer months show a dip, particularly in June and July, where the average wind speeds drop to their lowest at 3.2 m/s (7 mph). This seasonal rhythm accentuates the crispness of December's winds, making it a month where the air feels brisk and invigorating, setting the stage for cozy winter days ahead.

Average December Wind Speed in Flensburg

The chart displays monthly wind speed patterns in Flensburg, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.24.64.24.24.03.23.64.13.64.64.14.3 m/s
Data source: Flensburg December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Flensburg Compares to Other Months

The weather in Flensburg changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Flensburg and find detailed weather information for every month.

In December, temperatures range from a chilly minimum of -11°C (13°F) to a mild maximum of 11°C (53°F), with an average temperature of about 4°C (40°F). The month sees considerable precipitation, totaling 66 mm (2.6 in) over 14 days, and it also has a high humidity level of 87%. January, on the other hand, experiences slightly milder temperatures with a minimum of -9°C (16°F) and a maximum of 12°C (54°F), averaging around 3°C (38°F). Precipitation decreases to 55 mm (2.2 in) over 12 days, with humidity rising slightly to 89%. For more detailed weather insights, you can check Flensburg weather in January.

December and February present strikingly similar weather patterns, though February tends to be slightly colder. In December, temperatures range from a minimum of -11°C (13°F) to a maximum of 11°C (53°F), with an average of 4°C (40°F) and a total precipitation of 66 mm (2.6 in) over 14 days. Meanwhile, February has even chillier minimum temperatures at -15°C (5°F) and a similar average of 3°C (38°F), occasionally peaking at 15°C (59°F). Precipitation is slightly lower at 63 mm (2.5 in) over just 12 days, with humidity remaining quite high at 88%. For more specific information about the weather conditions in February, you can check out Flensburg weather in February.

In comparing the weather between December and March, both months exhibit similar average temperatures, hovering around 4°C (40°F). However, March displays a slightly warmer maximum temperature of 16°C (60°F), compared to December's peak of 11°C (53°F). Precipitation levels are quite close, with December receiving 66 mm (2.6 in) over 14 days, while March sees a slight increase to 70 mm (2.8 in) over 13 days. Humidity remains consistent at 87% for both months, underscoring a damp atmosphere in both winter and early spring. For more detailed insights, you can check Flensburg weather in March.

December and April present contrasting weather patterns, reflecting the transition from winter to spring. In December, temperatures range from a chilly -11°C (13°F) at night to a mild 11°C (53°F) during the day, with an average of 4°C (40°F). The month sees significant precipitation, totaling 66 mm (2.6 in), spread over 14 days and accompanied by high humidity at 87%. In contrast, April brings milder conditions, with temperatures ranging from -3°C (26°F) to a warm 23°C (75°F), resulting in an average of 8°C (46°F). Precipitation decreases to 41 mm (1.6 in) over just 9 days, and humidity slightly lowers to 84%. For more specific details, you can check Flensburg weather in April.

December and May present stark contrasts in weather, showcasing the transition from winter to spring. In December, temperatures can plummet to a chilly minimum of -11°C (13°F), with daily averages around 4°C (40°F) and maximums peaking at 11°C (53°F). The month sees considerable precipitation, totaling 66 mm (2.6 in) over 14 days, accompanied by high humidity levels of 87%. In contrast, May experiences a more moderate climate, with minimum temperatures around -1°C (31°F) and average temperatures climbing to 12°C (53°F), while maximums can reach a pleasant 26°C (79°F). Precipitation in May is slightly higher at 70 mm (2.8 in) across 12 days, but humidity is lower at 79%. For a detailed overview of May's weather patterns, you can visit Flensburg weather in May.

December and June present strikingly different weather characteristics. In December, temperatures can drop to a minimum of -11°C (13°F), with an average of around 4°C (40°F) and a maximum reaching only 11°C (53°F). The month sees ample precipitation, totaling 66 mm (2.6 in) over approximately 14 days, accompanied by high humidity levels of 87%. In contrast, June boasts a more temperate climate, where minimum temperatures start at 5°C (42°F) and can peak at 30°C (87°F), averaging around 17°C (62°F). Precipitation is slightly less at 58 mm (2.3 in) over 10 days, and humidity is relatively lower at 75%. For more details on the weather during this month, check Flensburg weather in June.

December and July present stark contrasts in weather. In December, temperatures can plunge as low as -11°C (13°F) and average around 4°C (40°F), with highs reaching 11°C (53°F). The month is characterized by a higher humidity level of 87% and a total precipitation of 66 mm (2.6 in) spread across about 14 days. In comparison, July boasts milder temperatures, with minimums of 7°C (45°F), average highs of 17°C (63°F), and maximums soaring to 31°C (88°F). This month experiences slightly more precipitation at 80 mm (3.2 in) over 13 days, but the humidity is lower at 76%. To explore the specifics of July weather, you can visit Flensburg weather in July.

December weather is characterized by much colder temperatures, with lows plunging to a frigid -11°C (13°F) and an average temperature of about 4°C (40°F). In contrast, August boasts a much warmer climate, featuring minimum temperatures around 7°C (44°F) and an average of 18°C (64°F), soaring to a high of 33°C (91°F). Both months experience significant rainfall, but December averages around 66 mm (2.6 in) over 14 days, while August sees slightly higher precipitation at 82 mm (3.2 in) over 15 days. Additionally, humidity is notably higher in December at 87%, compared to a more moderate 77% in August. For a closer look at the August weather, you can check out Flensburg weather in August.

December weather is characterized by much colder temperatures, with a minimum of -11°C (13°F) and an average of 4°C (40°F), compared to the milder September, which has a minimum of 3°C (38°F) and an average of 14°C (58°F). While December experiences lower maximum temperatures, peaking at 11°C (53°F), September reaches a warm maximum of 27°C (81°F). Precipitation levels are relatively similar, with December receiving 66 mm (2.6 in) over 14 days and September slightly higher at 71 mm (2.8 in) over 12 days. Humidity is also slightly higher in December at 87%, compared to September’s 84%. For more details on September's weather, visit Flensburg weather in September.

In comparing the weather of October and December, one can observe a significant shift in temperatures and conditions. October boasts milder temperatures, with nighttime lows around -2°C (29°F) and daytime highs reaching a pleasant 24°C (75°F), while December sees a notable drop, with average temperatures ranging from -11°C (13°F) to a maximum of only 11°C (53°F). Additionally, October experiences slightly higher precipitation at 91 mm (3.6 in) over 15 days compared to December's 66 mm (2.6 in) across 14 days. Interestingly, both months share the same humidity level of 87%, but the colder December air can feel much more biting than October's autumn warmth. For more detailed insights on October weather, you can check out Flensburg weather in October.

December's weather is significantly colder compared to November, with average temperatures dropping to around 4°C (40°F), whereas November boasts a milder average of 7°C (44°F). The minimum temperature in December can plunge to -11°C (13°F), compared to just -2°C (29°F) in November. Precipitation also increases slightly, with December receiving 66 mm (2.6 in) over 14 days, compared to November's 55 mm (2.2 in) across 12 days. Despite the slightly higher levels of precipitation in December, humidity levels remain high in both months, averaging 87% in December and 88% in November. For a more detailed look at November weather, you can visit Flensburg weather in November.

Compare Flensburg's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Flensburg

As December settles in Flensburg, the weather takes on a distinct character compared to other months. Temperatures often dip, creating a chill that occasionally brings frosty nights, contrasting sharply with the milder conditions that precede it. The increased humidity levels and the heightened frequency of rainfall—with about 14 days of precipitation—add a dampness to the air that can feel quite brisk. While December's averages hover around a cool 4°C, the occasional rise to a maximum of 11°C offers moments of reprieve from the cold. Overall, December signifies a transition, inviting residents and visitors alike to embrace the unique charm of winter in Flensburg. For a detailed look at how the climate shifts throughout the year, visit Flensburg Climate.