December Weather in Lenzburg, Switzerland

Last updated: August 27, 2025

December in Lenzburg, Switzerland, is characterized by a chilly and humid climate, with average temperatures hovering around 3°C (37°F). The month experiences maximum temperatures reaching up to 14°C (57°F), while nighttime can plunge to a brisk -6°C (21°F). Rainfall is significant, totaling approximately 125 mm (4.9 in) over 18 days, creating a damp atmosphere with humidity levels peaking at 90%. This blend of cool temperatures and frequent precipitation sets the tone for a quintessential winter experience in this charming Swiss town.

December Temperature in Lenzburg

In Lenzburg, Switzerland, December ushers in a noticeable chill as temperatures begin to dip, marking a transition toward winter. The month typically sees a minimum of -6°C (21°F), with an average hovering around 3°C (37°F), while daytime highs can reach up to 14°C (57°F). This data illustrates a steady decline from the milder conditions of November and emphasizes the region's characteristic crispness in December. As the holiday season approaches, the cool air invites festive activities, making it the perfect time to explore Lenzburg’s picturesque winter landscapes. The contrast between the frosty nights and the milder afternoons offers a unique charm, setting the stage for cozy gatherings and seasonal delights.

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

The chart illustrates December temperature patterns in Lenzburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lenzburg, 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).
JanFebMarAprMayJunJulAugSepOctNovDec343843505665676759514137
Data source: Temperature data for Lenzburg 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 Lenzburg

December in Lenzburg, Switzerland, brings a noticeable uptick in precipitation, accumulating 125 mm (4.9 in) over the month. This marks a significant increase compared to the relatively dry November, which recorded just 67 mm (2.7 in). Notably, December hosts 18 rainy days, the highest of any month in the year, contributing to the winter's characteristic dampness. This trend highlights a shift as the landscape transforms under the weight of increased moisture, often leading to the enchanting sight of snow-capped surroundings. Overall, December's precipitation sets a festive tone, bridging the year-end with the promise of a snowy winter ahead.

December Precipitation Trends in Lenzburg

The chart displays monthly precipitation patterns in Lenzburg, 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 Lenzburg, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec91768860132133128141829268125
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Lenzburg

In Lenzburg, Switzerland, December brings a notable increase in humidity, with levels reaching 90%. This figure aligns closely with the 88% recorded in November, suggesting a seasonally damp environment as the year comes to a close. Notably, this is part of a gradual decline from the higher humidity levels observed in January (92%) and February (89%), with a general trend of decreasing humidity throughout the spring and summer months. By the time we reach December, the humidity stabilizes, echoing the wetter conditions of late autumn and early winter, creating a crisp, moist atmosphere typical of the Swiss winter landscape.

December Average Humidity in Lenzburg

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

As December rolls into Lenzburg, Switzerland, the UV Index takes a dip, reaching a low level of 1. This signifies a much-reduced risk of harm from unprotected sun exposure, with a burn time of 45 minutes—perfect for enjoying the festive outdoor activities without a high concern for sunburn. Following a pattern established through the year, December’s index is at its lowest, contrasting sharply with the peak values in summer months when it soared to 9 in both June and July. As the colder months set in, it’s a welcomed reminder to stay vigilant against UV rays, even when the temperatures drop. For a detailed overview of UV exposure throughout the year, check out Lenzburg UV Index.

Maximum UV Index Levels in Lenzburg for December

The chart shows the monthly maximum UV Index (UVI) for Lenzburg 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 Lenzburg typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Lenzburg 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 Lenzburg

In December, Lenzburg, Switzerland, enjoys a refreshing 165 hours of sunshine, signaling a gradual decline as the year approaches its end. This month's sunlight is a drop from the preceding 198 hours in November, echoing a common trend of diminishing daylight during the winter months. However, these winter rays illuminate the serene beauty of the Swiss landscape, offering a cozy contrast to the longer summer days which peak in July with an impressive 413 hours of sunshine. As we transition into the depths of winter, Lenzburg's December sunshine serves as a gentle reminder of the vibrant energy that will soon return with the spring.

Monthly Sunshine Duration in Lenzburg: December Highlighted

The December sunshine duration represents the total number of hours Lenzburg 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.
JanFebMarAprMayJunJulAugSepOctNovDec145h215h287h356h363h383h413h380h321h269h198h165h
Data source: Lenzburg December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Lenzburg During December

In Lenzburg, Switzerland, the likelihood of sunny weather takes a noticeable dip during December, with only a 22% chance of sunshine. This trend continues from November, where the chances also sit at 22%, indicating a consistent pattern of overcast skies as winter truly sets in. As we move from the early months of the year, February marks a significant increase to 37%, leading to a gradual rise, peaking in March with 47%. However, December’s weather often cloaked in clouds, hints that winter’s grip can overshadow even the festive spirit, making the rare sunny days a delightful surprise amidst the chill.

Percentage of Sunny Days in December in Lenzburg

The chart illustrates the percentage of sunny days in Lenzburg 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 Lenzburg experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%38%47%49%33%31%35%39%43%36%22%22%
Data source: Lenzburg December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Lenzburg in December

In Lenzburg, Switzerland, December marks one of the year's shortest daylight durations, with just 8 hours of sunlight available. This progressive decline in daylight begins as early as November, where daylight drops to 9 hours, following a peak in the summer months of June to August, when residents enjoy nearly 15 hours of sun. The gradual increase in daylight becomes noticeable in February, as the length starts to stretch, eventually reaching a blossoming 15 hours in May. By December, the cycle turns again, reminding us of the natural rhythm of the seasons as daylight wanes before the promise of spring returns in the upcoming months.

Average Daylight Hours in Lenzburg for December

The chart illustrates the variation in daylight duration in Lenzburg throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 54m10h 14m11h 56m13h 39m15h 8m15h 54m15h 30m14h 10m12h 31m10h 48m9h 16m8h 28m
Data source: Lenzburg daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Lenzburg

As December arrives in Lenzburg, Switzerland, the average wind speed gently picks up to 2.4 m/s (5 mph), reflecting a subtle yet notable trend as the year winds down. This increase follows a consistent pattern seen from November, hinting at a shift towards more brisk winter days. Generally, the colder months from January to April tend to maintain low wind speeds, gradually building through the spring and summer. Interestingly, June to September showcase the year's quietest winds, averaging around 1.7 to 1.9 m/s (4 mph). However, as autumn transitions into winter, the December winds remind us of the close of another year, whispering promises of fresh beginnings with every gust.

Average December Wind Speed in Lenzburg

The chart displays monthly wind speed patterns in Lenzburg, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.62.22.32.42.81.71.91.91.71.82.12.4 m/s
Data source: Lenzburg December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Lenzburg Compares to Other Months

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

December and January exhibit distinct weather characteristics, with January generally being colder. In December, temperatures range from a minimum of -6°C (21°F) to a maximum of 14°C (57°F), with an average of 3°C (37°F). Precipitation is significant, totaling 125 mm (4.9 in) over 18 days, while humidity remains high at 90%. In contrast, January experiences even lower temperatures, with a minimum of -15°C (6°F) and an average of 1°C (34°F), although it can reach up to 16°C (61°F). Precipitation decreases to 91 mm (3.6 in) over 11 days, accompanied by a slight rise in humidity to 92%. For a detailed overview of January weather, you can visit Lenzburg weather in January.

December and February exhibit distinct weather patterns, with December generally being colder and wetter. In December, temperatures range from a chilling minimum of -6°C (21°F) to a more mild maximum of 14°C (57°F), with an average of 3°C (37°F). The month sees quite a bit of precipitation, totaling 125 mm (4.9 in) across 18 days, and humidity levels hover at a high 90%. In contrast, February experiences slightly colder minimums of -10°C (14°F), but can reach up to 18°C (65°F), with an average of 3°C (39°F). February also sees less precipitation, with 76 mm (3.0 in) over 11 days and slightly lower humidity at 89%. For a more detailed overview of February's weather, you can check Lenzburg weather in February.

In December, temperatures typically range from a chilly -6°C (21°F) to a mild 14°C (57°F), with an average of 3°C (37°F). The month is characterized by significant precipitation, totaling 125 mm (4.9 in) over about 18 days, contributing to a high humidity level of 90%.

In contrast, March experiences slightly warmer conditions, with temperatures ranging from -12°C (11°F) to a comfortable 21°C (70°F), and an average of 6°C (43°F). While precipitation decreases to 88 mm (3.5 in) across 14 days, humidity remains relatively high at 87%. For a more detailed look at March weather, you can visit Lenzburg weather in March.

Overall, March offers more mild weather and less precipitation than December, making it a transitional month into spring.

December and April present quite contrasting weather conditions. In December, temperatures range from a chilly minimum of -6°C (21°F) to a mild maximum of 14°C (57°F), with an average temperature of around 3°C (37°F). The month is characterized by high humidity at 90% and significant precipitation totaling 125 mm (4.9 in) over 18 days. Conversely, April brings a notable warming trend, with temperatures moving from a minimum of -4°C (25°F) to a pleasant maximum of 26°C (80°F), and an average of 10°C (50°F). Precipitation decreases to 60 mm (2.4 in) over just 10 days and humidity falls to 84%. For a detailed look at what to expect in April, you can check out Lenzburg weather in April.

December and May present contrasting weather patterns. In December, temperatures can drop as low as -6°C (21°F), with an average of 3°C (37°F) and a maximum of 14°C (57°F). The month is characterized by high humidity at 90% and significant precipitation, totaling 125 mm (4.9 in) over 18 days. In contrast, May experiences milder temperatures, with a minimum of -1°C (31°F) and an average of 13°C (56°F), reaching highs of 30°C (86°F). While precipitation slightly increases to 132 mm (5.2 in) over 16 days, the humidity is lower at 80%. This shift marks a transition from the chill of winter to the warmth of spring. For a closer look at May weather conditions, you can refer to Lenzburg weather in May.

In December, the weather is notably colder, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 14°C (57°F) and an average temperature of 3°C (37°F). This month sees significant precipitation, totaling 125 mm (4.9 in) over 18 days, accompanied by high humidity levels of 90%. In contrast, June presents a much milder climate, with temperatures starting at a minimum of 6°C (44°F) and peaking at 34°C (94°F), averaging 19°C (66°F). Although the precipitation is slightly higher in June at 133 mm (5.2 in) across 16 days, the humidity is lower at 82%. For more details on the June weather in Lenzburg, you can visit Lenzburg weather in June.

December and July present stark contrasts in weather. In December, temperatures typically range from a chilly -6°C (21°F) to a mild 14°C (57°F), with an average of around 3°C (37°F). The month experiences significant precipitation—about 125 mm (4.9 in) over 18 days—and high humidity levels at 90%. In contrast, July boasts much warmer temperatures, with a minimum of 8°C (47°F) and a maximum reaching up to 35°C (95°F), averaging 20°C (68°F). While July has slightly higher precipitation at 128 mm (5.1 in), it only occurs over 16 days, and the humidity is lower at 83%. For more detailed insights into July's weather, you can check out Lenzburg weather in July.

December and August present starkly contrasting weather conditions. In December, temperatures range from a chilly -6°C (21°F) at their lowest to a relatively mild 14°C (57°F) at their highest, with an average of 3°C (37°F). The month is characterized by high humidity at 90% and considerable precipitation, receiving about 125 mm (4.9 in) over approximately 18 days. Conversely, August showcases a much warmer climate, with minimum temperatures around 7°C (45°F) and daytime highs soaring to 34°C (94°F), averaging 19°C (67°F). Despite slightly more precipitation at 141 mm (5.5 in) over 15 days, the humidity is lower at 80%. For more detailed insights on weather during this summer month, you can check Lenzburg weather in August.

Comparing the weather in December and September reveals distinct seasonal contrasts. December experiences colder temperatures, with a minimum of -6°C (21°F) and an average of 3°C (37°F), while September boasts milder conditions, ranging from a minimum of 2°C (35°F) and averaging 15°C (60°F) up to a maximum of 29°C (84°F). Precipitation is also more pronounced in December, with 125 mm (4.9 in) falling over 18 days, compared to September’s 82 mm (3.2 in) over 12 days. Additionally, December's humidity levels are higher at 90%, while September maintains a lower humidity of 83%. For more detailed insights on September weather, you can visit Lenzburg weather in September.

In December, temperatures range from a chilly minimum of -6°C (21°F) to a mild maximum of 14°C (57°F), averaging around 3°C (37°F). This month experiences significant precipitation, with around 125 mm (4.9 in) spread over 18 days, maintaining a high humidity level of 90%. In contrast, October offers a more temperate climate, with minimum temperatures hovering at -1°C (31°F) and maximums reaching up to 23°C (73°F), averaging at 10°C (51°F). Precipitation is less frequent in October, totaling 92 mm (3.6 in) over 13 days, but it shares the same high humidity of 90%. For more detailed weather information about October, you can check Lenzburg weather in October.

In comparing the weather of December and November, it’s clear that December is generally colder and wetter. December temperatures have a minimum of -6°C (21°F) and an average of 3°C (37°F), whereas November sees slightly milder temperatures, with a minimum of -4°C (26°F) and an average of 5°C (41°F). Additionally, December experiences significantly more precipitation, totaling 125 mm (4.9 in) over 18 days, compared to November's 67 mm (2.7 in) over 12 days. Humidity levels are quite similar, with December at 90% and November at 88%. For a more detailed look at November weather, you can visit Lenzburg weather in November.

Compare Lenzburg's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Lenzburg

As December sets in, Lenzburg transforms into a winter wonderland, characterized by chillier temperatures and heightened precipitation. Unlike the milder months preceding it, December witnesses frigid lows that can dip below freezing, while average temperatures hover around the chilly 3°C mark. With an increase in humidity levels reaching 90%, the air feels particularly brisk, and the landscape often shrouds itself in a blanket of fog and frost. Additionally, the city experiences an uptick in precipitation, with roughly 18 days of rain or snow, making it one of the wettest months of the year. Combined, these factors create a distinctly different atmosphere, inviting visitors to enjoy the seasonal charm. For a deeper understanding of the climate throughout the year, check out Lenzburg Climate.