December Weather in Jena, Germany

Last updated: February 26, 2025

December in Jena, Germany, brings a chilly atmosphere with average temperatures hovering around 3°C (38°F). Residents may experience maximum highs of 14°C (57°F) on milder days, while the mercury can plunge to a brisk -12°C (11°F) at night. This month also sees average precipitation of 58 mm (2.3 in) over approximately 14 days, contributing to the region's lush, wintery landscape. With humidity levels reaching a notable 92%, the air feels damp and crisp, offering a quintessentially wintry experience for locals and visitors alike.

December Temperature in Jena

In December, Jena experiences a chill that heralds the heart of winter, with temperatures dropping to a minimum of -12°C (11°F). The average temperature hovers around 3°C (38°F), offering a stark contrast to the milder months prior. While the maximum reaches only 14°C (57°F), these figures indicate a significant shift toward colder weather as the year draws to a close. The drop in temperatures from November's average of 6°C (42°F) reflects a clear trend of winter setting in, making December a month for bundling up and enjoying the seasonal beauty of this charming German city.

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

The chart illustrates December temperature patterns in Jena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec353741485666676759524238
Data source: Temperature data for Jena 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 Jena

In December, Jena, Germany experiences a notable increase in precipitation, with 58 mm (2.3 in) recorded over the month, making it one of the wetter periods of the year. This uptick is accompanied by 14 rainy days, the highest in the latter part of the year, suggesting a shift from the relatively dry November. The overall trend during the winter months reveals a consistent pattern of increased rainfall, likely influenced by the colder temperatures that often result in more moisture-laden clouds. As the year closes, December embodies the shift into a season marked by both rainy days and the promise of a festive, wintry atmosphere.

December Precipitation Trends in Jena

The chart displays monthly precipitation patterns in Jena, 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.
JanFebMarAprMayJunJulAugSepOctNovDec494256346752647348544058
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Jena

As winter envelops Jena, Germany, December sees a notable uptick in humidity, reaching a brisk 92%. This increase follows a trend of elevated moisture in the chillier months, with January and February also featuring high humidity levels of 91% and 90%, respectively. The months leading up to winter, from March to May, experience a gradual decline, with humidity dipping to a comfortable 75% in the warmer month of May. However, as autumn arrives, there's a rebound, with humidity levels rising back to 90% in November. This cyclical pattern showcases Jena’s seasonal humidity fluctuations, where the wetter, colder months contrast with the drier spring and summer.

December Average Humidity in Jena

This chart illustrates the average monthly humidity levels in Jena, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%88%83%75%79%79%79%83%87%90%92%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Jena

In December, Jena, Germany experiences a drop in the UV Index, registering at 1, which falls into the low exposure category. This means that residents can enjoy outdoor activities with minimal risk of sunburn, as the burn time extends to 45 minutes. The trend throughout the year showcases a gradual increase in UV intensity from a low of 2 in January and February, peaking at 8 in both June and July during the summer months. As the year progresses, UV levels dip significantly in the colder months, providing a stark contrast to the sun-drenched days of summer. For more detailed information, you can explore Jena UV Index.

Maximum UV Index Levels in Jena for December

The chart shows the monthly maximum UV Index (UVI) for Jena 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.
JanFebMarAprMayJunJulAugSepOctNovDec224578875421
Data source: Jena 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 Jena

In December, Jena, Germany, experiences a notable shift as sunlight begins to wane, with only 136 hours of sunshine illuminating the month. This decrease follows a gradual upward trend from the previous months, highlighting the seasonal transition towards winter. While the city enjoys longer days and brighter skies in the spring and summer, peaking at 411 hours of sunshine in July, the arrival of December serves as a gentle reminder of the shorter daylight hours ahead. Despite this decline, December’s sunlight still provides a warm embrace for the festive season, contrasting sharply with the bitter cold as the year draws to a close. The reduction to less than half of July’s glory reflects a natural rhythm, anchoring Jena into the depths of winter while setting the stage for the brighter days that await in the coming months.

Monthly Sunshine Duration in Jena: December Highlighted

The December sunshine duration represents the total number of hours Jena 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.
JanFebMarAprMayJunJulAugSepOctNovDec105h194h269h341h383h402h411h375h312h256h176h136h
Data source: Jena December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Jena During December

In December, Jena, Germany, experiences a notable dip in sunny weather, with a mere 13% chance of sunshine. This reflects a trend where the winter months struggle to compete with the more luminous spring and summer periods. As the year winds down, the likelihood of clear skies diminishes significantly, contrasting sharply with the more radiant months like March, which boasts a 36% chance of sun. This seasonal shift showcases the typical behavior of Central European weather, where cloudier conditions and gloomy days become the norm as temperatures drop. Hence, those hoping for bright December days may need to embrace the charm of winter's cozy ambiance instead.

Percentage of Sunny Days in December in Jena

The chart illustrates the percentage of sunny days in Jena 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 Jena experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec12%27%36%31%33%28%30%30%36%32%18%13%
Data source: Jena December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Jena in December

In Jena, Germany, the ebb and flow of daylight throughout the year paints a striking picture of seasonal change. December closes the calendar year with a modest 7 hours of daylight, marking the lowest point of the annual cycle. This reduction in light follows a gradual decline from the sunnier months of May and June, which bask in up to 15-16 hours of daylight. As the year progresses from the bright vitality of spring into the starkness of winter, the daylight duration steadily decreases, creating a rhythmic pattern that reflects nature's seasonal shifts. The contrast between the hours of light in the summer months and the dwindling daylight of December highlights the stark beauty of Jena's winters, where shorter days invite cozy evenings and a chance to savor the quiet charm of the season.

Average Daylight Hours in Jena for December

The chart illustrates the variation in daylight duration in Jena throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 28m10h 1m11h 55m13h 51m15h 33m16h 26m15h 58m14h 27m12h 34m10h 38m8h 54m7h 59m
Data source: Jena daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Jena

As December unfolds in Jena, Germany, the wind begins to pick up slightly, averaging 3.2 m/s (7 mph). This steady pace reflects a subtle increase from the calmer summer months, where June to September saw the lowest averages hovering around 2.2 to 2.8 m/s (5 to 6 mph). The autumn months exhibit a bit more vigor, with November reaching 3.1 m/s (7 mph), setting the stage for winter breezes. Interestingly, December's wind patterns demonstrate a consistency with earlier months in the fall, hinting at a return to the mild, yet brisk air that characterizes the season. While not the most blustery month, December's winds weave through the streets with a refreshing chill, signaling the heart of winter in Jena.

Average December Wind Speed in Jena

The chart displays monthly wind speed patterns in Jena, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.42.93.23.13.72.22.52.82.43.33.13.2 m/s
Data source: Jena December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Jena Compares to Other Months

The weather in Jena 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 Jena and find detailed weather information for every month.

In comparing the weather between December and January, both months exhibit quite similar temperature ranges, with December experiencing a minimum of -12°C (11°F) and an average of 3°C (38°F), while January has a slightly milder minimum temperature of -11°C (12°F) and an average of 2°C (36°F). Interestingly, both months reach a maximum temperature of 14°C (57°F), indicating a consistent upper limit for the season.

Precipitation in December is higher at 58 mm (2.3 in) over 14 days, compared to January's 49 mm (1.9 in) over 12 days, suggesting that December tends to be a wetter month. Humidity levels are also quite comparable, with December at 92% and January slightly lower at 91%. For more detailed information, you can check Jena weather in January.

December and February exhibit some notable differences in weather patterns, despite having similar average temperatures around 3°C (38°F). In December, the temperatures can drop to a minimum of -12°C (11°F), while February is colder with lows reaching -19°C (-2°F). Precipitation is more frequent in December, occurring on 14 days with a total of 58 mm (2.3 in), compared to February's 9 days and 42 mm (1.7 in) of rain. Additionally, humidity levels are slightly higher in December at 92%, versus 90% in February. For more insights on February's weather, you can check out Jena weather in February.

In December, temperatures typically range from a low of -12°C (11°F) to a high of 14°C (57°F), with an average of 3°C (38°F). The month experiences significant precipitation, totaling 58 mm (2.3 in) over about 14 days, alongside high humidity levels of 92%. In contrast, March sees a slight increase in average temperature, reaching a minimum of -13°C (10°F) and a maximum of 21°C (71°F), averaging around 5°C (41°F). Precipitation remains comparable at 56 mm (2.2 in) over 15 days, but humidity decreases slightly to 88%. For more detailed information on March's climate, visit Jena weather in March.

December and April exhibit distinctly different weather patterns. In December, temperatures range from a chilly minimum of -12°C (11°F) to a mild maximum of 14°C (57°F), with an average of around 3°C (38°F). The month sees significant precipitation, totaling 58 mm (2.3 in) over about 14 days, and humidity remains high at 92%. In contrast, April experiences more varied temperatures, with a minimum of -6°C (21°F) and a maximum reaching 27°C (81°F), resulting in an average of 9°C (48°F). The spring month has less precipitation at 34 mm (1.4 in) over just 8 days and slightly lower humidity at 83%. This shift highlights the transition from winter's cold grasp in December to the burgeoning warmth of spring in April. For more specifics, you can check out Jena weather in April.

December and May present quite contrasting weather characteristics. In December, temperatures can drop as low as -12°C (11°F) and typically average around 3°C (38°F), with highs reaching only 14°C (57°F). The month is marked by heavy humidity at 92%, along with 58 mm (2.3 in) of precipitation spread over 14 days, creating a chilly and damp environment.

In contrast, May showcases a much milder climate, with temperatures fluctuating from a minimum of -1°C (30°F) to an average of 13°C (56°F) and maximum highs of 30°C (86°F). Although precipitation rises slightly to 67 mm (2.6 in) occurring over 12 days, the humidity drops to a more comfortable 75%. This shift marks a transition towards warmer and drier weather as spring settles in. For more specific details about the weather in May, visit Jena weather in May.

December and June present striking contrasts in weather characteristics. December experiences chilly conditions, with temperatures ranging from a minimum of -12°C (11°F) to a maximum of 14°C (57°F), averaging around 3°C (38°F). The month is marked by high humidity levels at 92% and frequent precipitation, totaling 58 mm (2.3 in) over 14 days. In stark contrast, June boasts milder temperatures, with a minimum of 5°C (41°F), an average of 19°C (66°F), and a maximum reaching 36°C (97°F). The humidity is notably lower at 79%, and precipitation is slightly less at 52 mm (2.0 in) over 10 days. For more details, check Jena weather in June.

December and July present a stark contrast in weather conditions. In December, temperatures can dip as low as -12°C (11°F), with an average of around 3°C (38°F) and a maximum of 14°C (57°F). The month is characterized by high humidity at 92% and about 58 mm (2.3 in) of precipitation over 14 days. In contrast, July offers much warmer temperatures, with a minimum of 7°C (46°F), an average of 19°C (67°F), and a maximum soaring to 37°C (98°F). The humidity is lower at 79%, and while precipitation increases slightly to 64 mm (2.5 in), it falls over just 10 days. For more specific information about the weather in July, you can visit Jena weather in July.

December and August present starkly contrasting weather conditions. In December, temperatures range from a frigid minimum of -12°C (11°F) to a mild maximum of 14°C (57°F), with an average of around 3°C (38°F). The month experiences high humidity at 92%, and precipitation is a notable 58 mm (2.3 in) over 14 days. In contrast, August offers much warmer weather with temperatures ranging from a minimum of 7°C (45°F) to a soaring maximum of 36°C (98°F) and an average temperature of 20°C (68°F). While August sees slightly more precipitation at 73 mm (2.9 in) over 10 days, the humidity is lower at 79%. For more details on the weather during this month, check out Jena weather in August.

In December, temperatures are considerably colder, with a minimum of -12°C (11°F) and an average of 3°C (38°F), while September enjoys milder weather, starting with a minimum of 2°C (35°F) and averaging 15°C (59°F). December experiences a wider temperature range reaching up to a maximum of 14°C (57°F), compared to September's highs of 32°C (91°F). Additionally, December has more days of precipitation, totaling 58 mm over 14 days, whereas September records 48 mm over just 7 days. The humidity levels are also higher in December at 92%, compared to September's 83%. For a closer look at the September weather patterns, you can explore more here: Jena weather in September.

In comparison to October, December exhibits notably colder temperatures, with averages dropping from a mild 11°C (52°F) in October to just 3°C (38°F) in December. The maximum temperatures also shift dramatically, peaking at 26°C (79°F) in October while capping at only 14°C (57°F) in December. While both months experience similar levels of precipitation, December sees slightly more, averaging 58 mm (2.3 in) over 14 days, compared to October's 54 mm (2.1 in) across 11 days. Additionally, the humidity rises in December to a substantial 92%, up from October's 87%. For more details about October weather, you can check out Jena weather in October.

In November, temperatures are generally milder with a minimum of -5°C (24°F) and an average of 6°C (42°F), peaking at 20°C (68°F). This month also sees less precipitation, totaling 40 mm (1.6 in) over approximately 10 days, accompanied by a humidity level of 90%. In contrast, December brings a significant drop in temperatures, with a minimum of -12°C (11°F) and an average of 3°C (38°F), reaching a maximum of 14°C (57°F). Precipitation increases to 58 mm (2.3 in) across 14 days, and humidity rises slightly to 92%. This shows that while November offers relatively warmer temperatures and less precipitation, December presents much colder conditions with increased moisture levels. For more details, you can check out Jena weather in November.

Compare Jena's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Jena

As December settles in Jena, the weather undergoes a significant transformation, offering a distinct contrast to the preceding months. Chilly temperatures, with averages well below those of autumn, create an atmosphere that calls for cozy sweaters and hot drinks. With an average humidity of 92%, the air feels crisp and damp, and the 14 days of precipitation contribute to a winter wonderland scene, albeit with chilly rain and occasional flurries. This month not only marks the onset of winter but also invites residents and visitors alike to embrace the festive spirit. For more details on what to expect throughout the year, check out Jena Climate.