December Weather in Sonderborg, Denmark

Last updated: October 30, 2025

In December, Sonderborg, Denmark experiences a varied climate characterized by an average temperature of 4°C (40°F), with maximums reaching up to 11°C (52°F) and chilling minimums dipping to -14°C (8°F). This winter month sees notable precipitation, totaling 60 mm (2.4 in) over around 13 days, contributing to the region's high humidity level of 87%. Residents and visitors alike can expect a mix of chilly air and damp conditions, perfect for cozy indoor activities amidst the festive season.

December Temperature in Sonderborg

December in Sønderborg, Denmark, marks the arrival of winter, bringing with it a notable drop in temperatures as the year draws to a close. With minimum temperatures plunging to -14°C (8°F), the chilly air calls for warm clothing and cozy indoor activities. The average temperature hangs around 4°C (40°F), presenting a stark contrast to the milder months preceding it. Residents can expect a maximum of only 11°C (52°F), making December one of the coldest months. This trend highlights a significant shift from the milder autumn months, as the region embraces the frosty embrace of winter. While the cold may deter outdoor activities, it also offers a magical winter wonderland for those who venture out to enjoy the seasonal spirit.

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

The chart illustrates December temperature patterns in Sonderborg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sonderborg, December typically has an average temperature of 4°C (40°F), with highs reaching up to 11°C (52°F) and lows dropping to around -14°C (8°F).
JanFebMarAprMayJunJulAugSepOctNovDec383740465362646458524540
Data source: Temperature data for Sonderborg 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 Sonderborg

December in Sonderborg, Denmark, showcases a notable trend in precipitation as the year comes to a close. With 60 mm (2.4 in) of rainfall over 13 days, December maintains a relatively high level of moisture, reflecting a pattern evident throughout the autumn months. This month's precipitation aligns closely with the more robust totals seen in October, reinforcing a trend of increased rainfall as winter approaches. Interestingly, while December's totals are slightly below November's 49 mm (1.9 in), it still represents a significant part of the wetter months, highlighting the region's characteristic chill and dampness during the festive season. The consistent precipitation days throughout the month suggest that residents should be prepared for a cool, drizzly December as they embrace the holiday spirit amid the clouds.

December Precipitation Trends in Sonderborg

The chart displays monthly precipitation patterns in Sonderborg, 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 Sonderborg, December typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec485763386361677765824960
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Sonderborg

In December, Sonderborg, Denmark, experiences a humidity level of 87%, marking a return to the higher figures typical of the earlier winter months. This month maintains a similar humidity profile to November's 88%, emphasizing the gradual transition from the chill of late autumn to the depths of winter. Notably, the humidity was at its peak in January at 89% and has shown a consistent trend of gradual decline from April's 84%, before stabilizing in the final months of the year. As winter sets in, the air retains a certain dampness, which adds to the distinct atmosphere of Sonderborg, making it an ideal time for cozy indoor activities.

December Average Humidity in Sonderborg

This chart illustrates the average monthly humidity levels in Sonderborg, 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 Sonderborg is approximately 87%, offering insight into how humid the weather typically is during this month.
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 Sonderborg

In December, Sonderborg experiences a low UV Index of 1, making sun exposure relatively safe for residents and visitors alike; the recommended burn time is a leisurely 45 minutes. This trend continues the pattern of the past few months, where UV levels dropped from a moderate 3 in October to a low 2 in November, showcasing a consistent decline as winter sets in. The data clearly indicates a shift from higher UV indexes in the summer months, peaking at 7 in July and June, to much gentler levels as the year wraps up. For those planning outdoor activities, it's a reminder to stay sun-smart while embracing the chill of December. For more detailed insights, check the Sonderborg UV Index.

Maximum UV Index Levels in Sonderborg for December

The chart shows the monthly maximum UV Index (UVI) for Sonderborg 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 Sonderborg typically reaches 1, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567765321
Data source: Sonderborg 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 Sonderborg

In December, Sonderborg, Denmark experiences a modest 116 hours of sunshine, reflecting a notable decrease as the year draws to a close. This decline is part of a seasonal trend that begins after the summer months, with sunshine peaking in July at 440 hours. Following the vibrant summer, the daylight hours gradually diminish, revealing a stark contrast from the 414 hours of sunshine in May to the gloomy 154 hours of November. While December's sunshine may be limited, it serves as a gentle reminder of the long, bright days of summer, inviting residents and visitors alike to embrace the beauty of the Danish winter landscape wrapped in a soft glow of winter sunlight.

Monthly Sunshine Duration in Sonderborg: December Highlighted

The December sunshine duration represents the total number of hours Sonderborg 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.
JanFebMarAprMayJunJulAugSepOctNovDec101h180h251h362h414h430h440h401h314h250h154h116h
Data source: Sonderborg December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sonderborg During December

In Sonderborg, Denmark, the likelihood of sunny weather in December stands at 22%, marking a slight uptick from the dismal 17% experienced in November. While December doesn’t quite rival the sunniest months, such as April with 50%, it hints at a gradual transition as the year comes to a close. Interestingly, as we move from the chill of early winter into the festivity of the holiday season, the chance of sunshine offers a glimmer of hope amidst the longer, darker days. This modest increase suggests that while December may not bring an abundance of sunny days, it does present a touch of brightness against the backdrop of Denmark’s otherwise gray winter landscape.

Percentage of Sunny Days in December in Sonderborg

The chart illustrates the percentage of sunny days in Sonderborg 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 Sonderborg experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%25%37%50%23%34%30%37%28%26%17%22%
Data source: Sonderborg December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sonderborg in December

In Sonderborg, Denmark, the daylight duration showcases a captivating annual rhythm, peaking in the summer months and retreating during winter. As December arrives, the days shrink to a modest 7 hours of daylight, reminiscent of January's short span. This minimal sunlight marks the transition into the darker months, following a gradual decline from November's 8 hours. The year begins with brief days, gradually expanding to a lush 17 hours in June. As the seasons shift, daylight dips again, with August offering 14 hours before the slow descent resumes into autumn and winter. This pattern emphasizes the stark contrasts between the long, sun-soaked summer days and the near twilight of winter, painting a vivid picture of Sonderborg’s seasonal dance with daylight.

Average Daylight Hours in Sonderborg for December

The chart illustrates the variation in daylight duration in Sonderborg throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 51m9h 41m11h 53m14h 9m16h 10m17h 15m16h 40m14h 50m12h 39m10h 25m8h 22m7h 15m
Data source: Sonderborg daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Sonderborg

As December settles over Sonderborg, Denmark, the winds begin to pick up, averaging 4.9 m/s (11 mph)—a notable increase from the gentle breezes of summer. This month’s wind speed mirrors the higher averages seen in both October and November, suggesting a transition towards more robust winter currents. Interestingly, while the summer months recorded lower wind speeds, there is a consistent pattern of wind intensity picking up as the year draws to a close. Thus, December breezes not only herald the arrival of the colder season but also invite a refreshing gust of activity, bridging the calm of late spring with the briskness characteristic of winter.

Average December Wind Speed in Sonderborg

The chart displays monthly wind speed patterns in Sonderborg, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.75.14.64.74.43.64.14.64.05.14.64.9 m/s
Data source: Sonderborg December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Sonderborg Compares to Other Months

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

December and January share similar temperature ranges, with both months experiencing maximum temperatures of around 11°C (53°F). However, December is generally colder, with minimum temperatures dropping to -14°C (8°F) compared to January's minimum of -9°C (15°F). Precipitation levels also differ slightly, with December receiving 60 mm (2.4 in) over 13 days, while January sees a reduced amount of 48 mm (1.9 in) across 11 days. Humidity levels remain high in both months, with December at 87% and January slightly higher at 89%. For a more detailed look at January's weather in Sonderborg, you can visit Sonderborg weather in January.

December and February in Sonderborg share some similarities, but also display key differences in their weather patterns. Both months experience minimum temperatures around -14°C (8°F), but February sees a slight rise in average temperatures to 3°C (38°F), compared to December's 4°C (40°F). Interestingly, the maximum temperature in February reaches up to 14°C (58°F), making it slightly warmer than December, which peaks at 11°C (52°F). Precipitation levels are quite comparable, with December recording 60 mm (2.4 in) over 13 days and February showing 57 mm (2.3 in) across 12 days. Humidity remains high in both months, with February's humidity at 88% compared to December's 87%. For more details about February weather in Sonderborg, you can visit Sonderborg weather in February.

In December, the weather is characterized by cold temperatures, with a minimum of -14°C (8°F) and a maximum of 11°C (52°F), while the average temperature hovers around 4°C (40°F). The month experiences about 60 mm (2.4 in) of precipitation over 13 days, alongside a high humidity level of 87%. In contrast, March offers slightly milder conditions, with a minimum temperature of -8°C (19°F) and a maximum reaching 16°C (60°F), while still maintaining an average of 4°C (40°F). Precipitation increases slightly to 63 mm (2.5 in), occurring over 12 days, but the humidity remains consistent at 87%. For more detailed March weather insights, check out Sonderborg weather in March.

In December, the weather is characterized by cold temperatures, with minimums dropping as low as -14°C (8°F) and an average of around 4°C (40°F). Precipitation is fairly frequent, occurring over 13 days and totaling 60 mm (2.4 in), with humidity levels hovering at a high 87%. In contrast, April experiences much milder conditions, with minimum temperatures around -2°C (29°F) and averages rising to 8°C (46°F), peaking at a maximum of 23°C (74°F). The precipitation is lighter in April, amounting to 37 mm (1.5 in) over just 8 days, and humidity slightly decreases to 84%. For more detailed insights on the weather during this month, you can visit Sonderborg weather in April.

In December, the weather is notably colder, with temperatures ranging from a frigid minimum of -14°C (8°F) to a maximum of 11°C (52°F), and an average of 4°C (40°F). This month sees significant precipitation, totaling around 60 mm (2.4 in) over approximately 13 days, accompanied by high humidity levels of 87%. In contrast, May brings a pleasant warming trend, featuring temperatures that vary from a minimum of 1°C (35°F) to a maximum of 25°C (77°F), with an average of 12°C (54°F). The precipitation levels are slightly higher at 63 mm (2.5 in) across 11 days, but the humidity is more comfortable at 79%. This stark contrast highlights the transition from the chill of winter in December to the mild warmth of spring in May. For more details, check out Sonderborg weather in May.

December weather is characterized by significantly colder temperatures, with average highs around 4°C (40°F) and lows plunging to -14°C (8°F). The month experiences high humidity at 87% and sees about 60 mm (2.4 in) of precipitation over 13 days, contributing to a chilly atmosphere. In contrast, June brings a much warmer climate, with average temperatures ranging from a minimum of 7°C (46°F) to a maximum of 28°C (83°F). Although June also receives similar precipitation levels—61 mm (2.4 in) over 11 days—humidity is lower at 75%, allowing for a more comfortable feel. For a detailed look at June weather, you can visit Sonderborg weather in June.

December and July in Sonderborg present two strikingly different weather experiences. In December, temperatures can drop as low as -14°C (8°F) with an average of 4°C (40°F) and a maximum of 11°C (52°F), creating a cold and crisp atmosphere. Precipitation is somewhat frequent, occurring over 13 days, with humidity levels reaching a high of 87%. In contrast, July brings a much warmer climate, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 31°C (87°F) and an average of 18°C (64°F). This summer month experiences a slightly higher precipitation level of 67 mm (2.6 in) over 12 days, but lower humidity at 76%, making it generally more comfortable. For more details on July weather, visit Sonderborg weather in July.

December and August showcase stark contrasts in weather. In December, temperatures dip significantly, with lows reaching -14°C (8°F) and averages around 4°C (40°F), while the maximum temperature only climbs to 11°C (52°F). This month experiences a high humidity level of 87% and sees around 60 mm (2.4 inches) of precipitation over 13 days. In contrast, August offers a much milder climate, featuring minimum temperatures of 8°C (46°F) and averages around 18°C (64°F), with highs soaring up to 32°C (89°F). The humidity is lower at 77%, and while it has a similar number of rainy days, August records a slightly higher precipitation of 77 mm (3.0 inches). For a detailed overview of the weather in August, you can refer to Sonderborg weather in August.

When comparing the weather in December and September, notable differences emerge in temperature and overall climate conditions. December experiences much colder temperatures, with a minimum of -14°C (8°F) and an average of just 4°C (40°F), while September boasts a milder climate, featuring minimums of 5°C (42°F) and averages around 15°C (58°F). Additionally, December's precipitation levels are slightly lower at 60 mm (2.4 in) across 13 days, compared to September's 64 mm (2.5 in) over 11 days, despite its harsher chill. Humidity levels remain relatively high in both months, with December at 87% and September at 84%. For more specific details on September weather, you can refer to Sonderborg weather in September.

December weather presents a stark contrast to October, with significantly colder temperatures. December's average temperature hovers around 4°C (40°F), with a minimum of -14°C (8°F) and a maximum of 11°C (52°F). In comparison, October enjoys milder conditions, averaging 11°C (52°F) and peaking at 23°C (74°F). Precipitation levels in December are slightly lower, at 60 mm (2.4 in) over 13 days, while October sees more rainfall at 82 mm (3.2 in) across 14 days. Interestingly, both months share the same humidity level of 87%. For those interested in more specific details, you can explore Sonderborg weather in October.

In comparing the weather between November and December, December experiences a notable drop in temperatures, with minimums plummeting to -14°C (8°F) compared to November's milder minimum of 0°C (32°F). The average temperature in December hovers around 4°C (40°F), while November enjoys a slightly warmer average of 7°C (45°F). Precipitation is also more pronounced in December, totaling 60 mm (2.4 in) over 13 days, as opposed to November's 49 mm (1.9 in) over 11 days. Despite both months showing high humidity, December maintains an average humidity of 87%, just slightly lower than November's 88%. For more detailed insights, check Sonderborg weather in November.

Compare Sonderborg's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Sonderborg

As December rolls into Sonderborg, the weather showcases a distinct contrast to other months, plunging temperatures and enveloping the region in a cool embrace. With a chilly average of 4°C (40°F), the month often feels significantly colder due to the high humidity of 87%, making it a month best suited for cozy indoor activities. Occasional precipitation adds to the atmosphere, with about two weeks witnessing rain or snow, resulting in approximately 60 mm of moisture throughout. This colder, wetter climate stands in stark contrast to the milder and drier conditions of other months. For those contemplating a visit or simply curious about the local climate, exploring more about the seasonal weather can be found at Sonderborg Climate.