December Weather in Luzern, Switzerland

Last updated: August 27, 2025

December in Luzern, Switzerland, is characterized by a cool but enchanting winter atmosphere. With maximum temperatures reaching 11°C (53°F) and an average chill of 2°C (35°F), the month can experience sharp drops to a minimum of -9°C (16°F). A significant 169 mm (6.6 in) of precipitation falls over 18 days, creating a picturesque landscape often blanketed in snow. The 90% humidity adds to the cozy ambiance, making Luzern a perfect destination for those seeking the charm of the festive season amidst breathtaking alpine scenery.

December Temperature in Luzern

As December rolls into Luzern, Switzerland, the temperatures dip significantly, characterized by a chilly range that swings from a minimum of -9°C (16°F) to a maximum of 11°C (53°F). The month showcases an average temperature of around 2°C (35°F), signaling the transition into the heart of winter. Compared to the milder conditions of the preceding months, December's cold marks a notable shift; it’s a time when frosty air dominates the landscape, inviting festive charm and winter sports enthusiasts alike. With each passing day, the temperatures mirror the enchanting atmosphere of the city enveloped in a delicate layer of snow, enhancing Luzern's picturesque winter scenery.

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

The chart illustrates December temperature patterns in Luzern, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Luzern, 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).
JanFebMarAprMayJunJulAugSepOctNovDec323640465261646457504135
Data source: Temperature data for Luzern 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 Luzern

In December, Luzern experiences a notable surge in precipitation, measuring 169 mm (6.6 in), which marks one of the wetter months of the year. This increase aligns with a trend observed throughout the autumn and winter months, where rainfall generally intensifies. December also brings with it a significant number of rainy days—18 in total—contributing to the overall dampness. Compared to November, which recorded 97 mm (3.8 in) over 13 days, December not only sees heavier precipitation but a greater frequency of rain, underscoring the transition into the colder, wetter season. This pattern reinforces Luzern's reputation for its picturesque yet unpredictable winter weather, where rain and gray skies often prevail as the year draws to a close.

December Precipitation Trends in Luzern

The chart displays monthly precipitation patterns in Luzern, 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 Luzern, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec13810712610217220219919313815897169
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Luzern

As December settles in Luzern, Switzerland, the air becomes notably more humid, with levels rising to 90%. This slight increase mirrors the transition from the slightly drier autumn months, where humidity levels hovered around 88% in November. The winter months tend to experience higher humidity, with December echoing January’s conditions, both reaching a peak of 92%. Interestingly, while the late spring and summer months reveal a general decline in humidity, December marks a return to the moisture-rich atmosphere that characterizes the colder part of the year. The consistent trend of higher humidity in the latter months of the year encapsulates Luzern's seasonal rhythm, emphasizing a cozy, albeit damp, winter landscape.

December Average Humidity in Luzern

This chart illustrates the average monthly humidity levels in Luzern, 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 Luzern is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%89%87%84%80%82%83%80%83%90%89%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Luzern

As the year comes to a close, December in Luzern, Switzerland, presents a gentler UV Index of 2, categorizing exposure levels as low. With a burn time of 45 minutes, this month offers a delightful respite from the harsher sunlight experienced in the summer months. Notably, the UV Index trends show a clear shift from the high peaks of August’s 8 and July’s 9, where sun exposure was at its most intense, to a more subdued atmosphere as winter sets in. This seasonal ebb and flow underscores Luzern's changing sun dynamics, making December a perfect time to enjoy outdoor activities without the heightened risk of UV harm. For those curious about year-round UV trends in Luzern, more information can be found here: Luzern UV Index.

Maximum UV Index Levels in Luzern for December

The chart shows the monthly maximum UV Index (UVI) for Luzern 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 Luzern typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986432
Data source: Luzern 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 Luzern

As December descends upon Luzern, Switzerland, the days grow shorter and the sun shines for approximately 185 hours, marking a distinct dip from the vibrant autumn months. This decrease follows a notable upward trend from the gray winter months of January, which begins with just 164 hours of sunlight, and gradually climbs to the radiant days of summer, peaking in July with an impressive 415 hours. While December's sunlight may not match the summer brilliance, it still provides a cozy backdrop as the festive season unfolds, playing its part in the city's enchanting winter charm. As the year wraps up, the contrast between the abundant light of June and the gentle glow of December beautifully illustrates Luzern's seasonal rhythm.

Monthly Sunshine Duration in Luzern: December Highlighted

The December sunshine duration represents the total number of hours Luzern 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.
JanFebMarAprMayJunJulAugSepOctNovDec164h228h300h358h370h385h415h384h320h279h219h185h
Data source: Luzern December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Luzern During December

In Luzern, Switzerland, the likelihood of sunny weather in December presents a modest 30% chance, reflective of the seasonal transition into winter. As the year progresses, the sunlight probability sees significant fluctuations, peaking in the spring with 46% in April and gradually declining to its lowest point at 14% in January. While December's chance of sun is slightly higher than the gloomy November at 24%, it suggests that winter is settling in, yet there remains a reasonable opportunity for sunshine amidst the cool, crisp air of the holiday season.

Percentage of Sunny Days in December in Luzern

The chart illustrates the percentage of sunny days in Luzern 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 Luzern experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec14%35%43%46%30%31%33%36%36%36%24%30%
Data source: Luzern December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Luzern in December

As the year winds down in Luzern, Switzerland, December ushers in the season of shorter days, with daylight lasting only 8 hours. This marks a return to the early winter gloom that mirrors the daylight duration seen in January. Interestingly, the pattern reveals a steady increase in sunlight beginning in February, peaking in the long, bright days of May through July, where the sun graces the sky for 15 hours. Following this zenith, daylight begins to wane as the year progresses, a trend that highlights the stark contrast between the vibrant spring and summer months and the quieter, more introspective days of late autumn and winter. As daylight dwindles toward the end of the year, it's a gentle reminder of nature's rhythms, beckoning the cozy warmth of indoor gatherings.

Average Daylight Hours in Luzern for December

The chart illustrates the variation in daylight duration in Luzern throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 58m10h 17m11h 56m13h 37m15h 4m15h 48m15h 25m14h 7m12h 30m10h 49m9h 20m8h 33m
Data source: Luzern daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Luzern

In Luzern, Switzerland, the December winds bring a gentle chill, with an average speed of 1.5 m/s (3 mph). As the year transitions into winter, winds show a slight resurgence compared to the preceding months, settling into a consistent pattern of light breezes that have characterized the colder seasons. Throughout the year, from January to November, wind speeds typically fluctuate around 1.3 to 1.7 m/s, suggesting a consistent calmness in the region. December, however, nudges slightly upward, hinting at the tranquility of the winter air that envelops the picturesque lakeside city, setting a serene backdrop for the festive holiday season. This subtle increase in wind speed captures the essence of winter in Luzern, where each breath of crisp air invigorates the spirit while maintaining the region's charm.

Average December Wind Speed in Luzern

The chart displays monthly wind speed patterns in Luzern, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.61.61.41.51.71.31.31.31.31.41.31.5 m/s
Data source: Luzern December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Luzern Compares to Other Months

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

December and January present a notable shift in weather conditions. In December, temperatures typically range from a minimum of -9°C (16°F) to a maximum of 11°C (53°F), with an average of 2°C (35°F) and strong humidity at 90%. The month experiences significant precipitation, totaling 169 mm (6.6 in) over 18 days. In contrast, January is slightly colder, with temperatures dropping to a minimum of -13°C (10°F) and an average of 0°C (32°F). Despite the chillier temperatures, January sees less precipitation at 138 mm (5.4 in) over 13 days and slightly higher humidity at 92%. For more detailed information, check out Luzern weather in January.

In comparing the weather of December and February, both months exhibit cold temperatures, but February generally experiences even lower minimum temperatures, dropping to -17°C (2°F) compared to December's -9°C (16°F). Despite their similar average temperatures of around 2°C (35°F in December and 2°C (36°F) in February), February sees a slightly warmer maximum temperature of 16°C (62°F). Precipitation is also lower in February, amounting to 107 mm (4.2 in) over 12 days, compared to December's 169 mm (6.6 in) spread over 18 days. The humidity remains high for both months, with February having a marginally lower rate of 89% compared to December’s 90%. For more detailed weather information, you can refer to Luzern weather in February.

In December, temperatures can be quite chilly, with nightly lows dipping to -9°C (16°F) and daytime highs averaging around 2°C (35°F), often reaching a maximum of 11°C (53°F). The weather is characterized by high humidity at 90% and substantial precipitation, totaling 169 mm (6.6 inches) over 18 days.

In contrast, March brings a slight warming trend, with temperatures ranging from a minimum of -13°C (8°F) to an average of 4°C (40°F), peaking at a comfortable 18°C (65°F). Precipitation is also lower in March, totaling 126 mm (5.0 inches) over 16 days, accompanied by a humidity level of 87%. For more detailed insights into the weather changes in March, check out Luzern weather in March.

December and April present starkly contrasting weather conditions. In December, temperatures hover between a chilly minimum of -9°C (16°F) and a maximum of 11°C (53°F), with an average of just 2°C (35°F). The month is characterized by high humidity at 90% and significant precipitation, totaling 169 mm (6.6 in) over 18 rainy days. In contrast, April experiences milder temperatures, ranging from a minimum of -6°C (21°F) to a comfortable maximum of 23°C (73°F), with an average of 8°C (46°F). Precipitation in April is lower, totaling 102 mm (4.0 in) over 12 days, and humidity is slightly reduced at 84%. These differences highlight the transition from the cold, damp winter of December to the more temperate and refreshing spring of April. For further details, check out Luzern weather in April.

December and May present quite contrasting weather conditions. In December, temperatures range from a chilly minimum of -9°C (16°F) to a milder maximum of 11°C (53°F), with an average around 2°C (35°F). The month is marked by high humidity at 90% and significant precipitation, totaling 169 mm (6.6 in) over 18 days. On the other hand, May brings much warmer temperatures, with a minimum of -6°C (21°F) and a maximum reaching 28°C (83°F), averaging around 11°C (52°F). Although May sees slightly more precipitation at 172 mm (6.8 in) over 19 days, the humidity is somewhat lower at 80%, creating a more comfortable atmosphere. For a closer look at the weather specifics, check out Luzern weather in May.

December and June in Luzern bring distinctly different weather experiences. In December, temperatures range from a chilly -9°C (16°F) at night to a mild 11°C (53°F) during the day, with an average temperature of 2°C (35°F). The month is characterized by high humidity at 90%, and it experiences about 169 mm (6.6 inches) of precipitation spread over 18 days. In contrast, June offers a much warmer climate, with minimum temperatures around 5°C (41°F) and maximums reaching 32°C (90°F), resulting in an average of 16°C (62°F). Although June sees a higher total precipitation of 202 mm (8.0 inches) over the same number of rainy days, humidity is slightly lower at 82%. For a deeper insight into June weather in Luzern, you can visit Luzern weather in June.

December and July present starkly contrasting weather conditions. In December, temperatures range from a chilling minimum of -9°C (16°F) to a mild maximum of 11°C (53°F), with an average of 2°C (35°F). The month sees about 169 mm (6.6 in) of precipitation over 18 days, accompanied by high humidity levels reaching 90%. In contrast, July boasts a much warmer climate, with temperatures varying from a minimum of 8°C (47°F) to a maximum of 31°C (89°F), averaging at 18°C (64°F). Although July experiences slightly higher precipitation at 199 mm (7.8 in), it has the same number of rainy days as December. Humidity is also lower in July, at 83%. This makes July a much more pleasant and comfortable month compared to the cold and damp conditions of December. For more details, you can check out Luzern weather in July.

In December, temperatures can plunge to a minimum of -9°C (16°F), with an average of around 2°C (35°F) and a maximum of 11°C (53°F), creating a chilly atmosphere suitable for winter activities. This month also sees frequent precipitation, totaling 169 mm (6.6 in) across about 18 days, accompanied by high humidity levels of 90%. In contrast, August experiences a much warmer climate, with temperatures ranging from a minimum of 8°C (46°F) to a pleasant average of 18°C (64°F), peaking at 30°C (87°F). Despite slightly higher overall precipitation of 193 mm (7.6 in) over 16 days, the humidity is lower at 80%. For those interested in diving deeper into the weather specifics in this vibrant summer month, I recommend checking this link: Luzern weather in August.

In December, the weather is significantly colder, with temperatures ranging from a minimum of -9°C (16°F) to a maximum of 11°C (53°F) and an average of 2°C (35°F). This month also experiences higher precipitation, with 169 mm (6.6 in) over 18 days, contributing to a humidity level of 90%. In contrast, September enjoys milder temperatures that range from a minimum of 3°C (37°F) to a maximum of 25°C (78°F), with an average of 14°C (58°F). The month records less precipitation at 138 mm (5.4 in) spread over 15 days and a slightly lower humidity of 83%. For more detailed information, you can visit Luzern weather in September.

December weather is significantly colder than October's, with average temperatures in December ranging from a minimum of -9°C (16°F) to a maximum of 11°C (53°F). In contrast, October enjoys milder temperatures, experiencing minimums of 1°C (34°F) and maximums reaching 21°C (70°F). Both months see a similar level of humidity at 90%, but December is slightly wetter, with 169 mm (6.6 in) of precipitation over 18 days compared to October's 158 mm (6.2 in) over 14 days. For more detailed information about October weather, you can visit Luzern weather in October.

In December, temperatures drop further compared to November, with a minimum of -9°C (16°F) and an average of 2°C (35°F), while November experiences milder conditions with a minimum of -4°C (26°F) and an average of 5°C (41°F). Additionally, December sees significantly higher precipitation levels, totaling 169 mm (6.6 in) over 18 days, compared to November's 97 mm (3.8 in) over 13 days. Humidity also rises slightly in December, reaching 90%, compared to November’s 88%. This stark contrast highlights December's colder, wetter, and more overcast weather, making it a distinctly different month from November. For a detailed look at November weather, check out Luzern weather in November.

Compare Luzern's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Luzern

As December settles in Luzern, the weather takes on a distinctly colder demeanor compared to the milder months preceding it. With average temperatures dipping significantly and chilly nights often plummeting to below freezing, the city breathes a crisp air that heralds the arrival of winter. This month is also characterized by frequent rainy days, with precipitation levels rising, resulting in a damp atmosphere that matches the heavy cloud cover typical of the season. The high humidity creates a feeling of chill that lingers, making cozy indoor activities especially appealing. For those keen to explore more about Luzern's unique weather patterns throughout the year, visit Luzern Climate.