December Weather in Glarus, Switzerland

Last updated: August 27, 2025

In Glarus, Switzerland, December marks a chilly transition into winter, characterized by a maximum temperature of 8°C (46°F) and an average low of -3°C (27°F). The month can be notably frigid, with temperatures plunging to minimums of -18°C (0°F), inviting layers of cozy attire. With 199 mm (7.8 in) of precipitation over 19 days, the region experiences a substantial amount of moisture, often falling as snow, contributing to its picturesque winter landscape. A high humidity level of 90% further enhances the wintry atmosphere, making December a quintessential time to embrace the beauty of the Swiss Alps in Glarus.

December Temperature in Glarus

In Glarus, Switzerland, December brings a chilly embrace as temperatures begin to plummet, with nighttime lows averaging around -18°C (0°F). The month typically hovers around an average temperature of -3°C (27°F), marking it as one of the colder periods of the year. During the day, residents can expect a slight reprieve with highs reaching up to 8°C (46°F), allowing for some outdoor activities amidst the stunning winter scenery. This distinct dip in temperatures from the comparatively mild November reflects a clear trend toward winter, setting the stage for the snow-capped landscapes that Glarus is known for, enticing nature enthusiasts and winter sports lovers alike. As the year draws to a close, the wintry chill in the air signals the arrival of the festive season, making December a magical time to experience the beauty of this Swiss gem.

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

The chart illustrates December temperature patterns in Glarus, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Glarus, 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).
JanFebMarAprMayJunJulAugSepOctNovDec242832394656575751433426
Data source: Temperature data for Glarus 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 Glarus

December in Glarus brings a notable shift in precipitation patterns, with 198 mm (7.8 inches) of rain typically falling over the month. This represents a moderate increase compared to November's 104 mm (4.1 inches), as the transition into winter fosters a rise in wet days, totaling 19 throughout December. While the month does not surpass the peak rainfall seen in the summer months—like August with 289 mm (11.4 inches)—it still plays a crucial role in the region's overall moisture accumulation. The consistent precipitation days suggest that Glarus experiences a steady, if not intense, flow of rain during this time, setting the scene for a vibrant and lush landscape come spring.

December Precipitation Trends in Glarus

The chart displays monthly precipitation patterns in Glarus, 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 Glarus, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec165112148124209239264289191168104198
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Glarus

In Glarus, Switzerland, December brings a notable increase in humidity, reaching 90%, which echoes the elevated levels seen at the beginning of the year. This winter month aligns closely with October, another peak period, suggesting a seasonal trend where moisture levels are high as the year wraps up. Throughout the months preceding December, humidity gradually tapered off from a high of 92% in January to a low of 80% in May, before consistently hovering in the low to mid-80s during summer. As autumn sets in, the humidity begins to rise again, marking a return to the dampness characteristic of Glarus winters. Overall, December's humidity reflects a cyclical pattern that captures the region's cool, moist climate during the colder months.

December Average Humidity in Glarus

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

In December, Glarus, Switzerland experiences a low UV Index of 2, making it a more forgiving month for sun exposure compared to the height of summer. With a burn time of 45 minutes, residents and visitors can enjoy outdoor activities without the immediate concern of sunburn. This trend aligns with the gradual decrease in UV levels as the year comes to a close, presenting a stark contrast to the very high levels seen in the late spring and summer months. As we move from the intense rays of June and July back to the gentle glow of winter, it's essential to adjust your sun protection habits accordingly. For more detailed insights into UV levels throughout the year, check out the Glarus UV Index.

Maximum UV Index Levels in Glarus for December

The chart shows the monthly maximum UV Index (UVI) for Glarus 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 Glarus typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2357810986432
Data source: Glarus 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 Glarus

In Glarus, Switzerland, the month of December marks the onset of winter, bringing with it a notable decline in sunshine hours as the year rounds its final corner. With only 183 hours of sunlight, December's glow is overshadowed by the longer, brighter months preceding it, particularly May and July, which bask in a peak of 365 and 410 hours respectively. The trend throughout the year reveals a gradual increase in sunlight from the depths of winter, with February enjoying a substantial jump to 227 hours before bursting into the vibrant spring and summer months. As the days grow shorter in December, Glarus invites a cozy charm, encouraging moments of reflection amid the tranquil beauty of the winter landscape, even as it ushers in the sleepy lull of shorter days.

Monthly Sunshine Duration in Glarus: December Highlighted

The December sunshine duration represents the total number of hours Glarus 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.
JanFebMarAprMayJunJulAugSepOctNovDec163h227h299h355h365h382h410h377h314h275h211h183h
Data source: Glarus December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Glarus During December

In Glarus, Switzerland, **December typically brings a moderate 32% chance of sunshine, making it a time of transition as the year draws to a close. Compared to the sunnier months of spring and early autumn, December's likelihood of bright days is fairly modest. Notably, this percentage is slightly higher than the gloomier conditions of January and February, where the sun shines less frequently. As winter settles in, the weather tends to feel more overcast, but December still offers glimpses of sunlight that can brighten the short days, encouraging outdoor activities amidst the breathtaking winter scenery. Overall, while December is not synonymous with blazing sunshine, it does hold its share of sunny surprises amidst the chilly air.

Percentage of Sunny Days in December in Glarus

The chart illustrates the percentage of sunny days in Glarus 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 Glarus experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec16%36%38%36%25%27%26%24%31%34%27%32%
Data source: Glarus December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Glarus in December

As December arrives in Glarus, Switzerland, daylight takes a brief dip, offering only 8 hours of sunshine each day. This trend marks a stark contrast to the brighter days of summer, where June, July, and August boast a generous 15 hours of daylight. As the year progresses from the brightness of May’s 15 hours to the more subdued 10 hours in October, and down to December’s twilight, it’s evident that winter's embrace brings shorter days. The gradual decline in daylight hours from the vibrant spring months of April’s 13 hours through November’s 9 hours underscores a seasonal rhythm, inviting the community to adapt and cherish the precious moments of light even as the winter chill settles in.

Average Daylight Hours in Glarus for December

The chart illustrates the variation in daylight duration in Glarus throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 57m10h 17m11h 56m13h 37m15h 5m15h 49m15h 26m14h 8m12h 30m10h 49m9h 19m8h 32m
Data source: Glarus daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Glarus

As December descends upon Glarus, Switzerland, the average wind speed mirrors the year-end chill at 1.4 m/s (3 mph). This slight fluctuation in wind velocity indicates a steady pattern throughout the year, with most months hovering close to the same breezy mark. Notably, despite January and February experiencing a marginal increase in wind speed to 1.4 m/s and 1.6 m/s respectively, the overall trend demonstrates a gentle lull in activity during the summer months. The wind whispers a familiar tale, soaking up the serene ambiance of Glarus, providing a peaceful yet invigorating backdrop to the stunning winter landscape.

Average December Wind Speed in Glarus

The chart displays monthly wind speed patterns in Glarus, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.41.61.21.31.41.21.21.21.11.41.21.4 m/s
Data source: Glarus December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Glarus Compares to Other Months

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

December and January present distinct yet similar winter weather patterns, characterized by low temperatures and significant precipitation. In December, temperatures range from a minimum of -18°C (0°F) to a maximum of 8°C (46°F), with an average of -3°C (27°F). The month sees considerable precipitation, totaling 198 mm (7.8 in) over 19 days and maintaining a humidity level of 90%. In contrast, January experiences slightly colder conditions, with temperatures dropping to a minimum of -19°C (-2°F) and an average of -5°C (24°F). Precipitation is also lower, at 165 mm (6.5 in) over 12 days, coupled with a slight increase in humidity at 92%. For more detailed weather insights, check out Glarus weather in January.

December and February present contrasting winter weather patterns. In December, temperatures hover around an average of -3°C (27°F), with a minimum of -18°C (0°F) and a maximum of 8°C (46°F). The month witnesses significant precipitation, totaling 198 mm (7.8 in) over 19 days, coupled with high humidity at 90%. In contrast, February offers slightly milder conditions, with an average temperature of -2°C (28°F), and while it can dip to a minimum of -21°C (-5°F), it also reaches a maximum of 11°C (53°F). Notably, February is drier, with total precipitation of 112 mm (4.4 in) over just 13 days and humidity remaining comparable at 89%. For detailed insights into weather in February, you can check Glarus weather in February.

In December, temperatures in Glarus range from a chilly minimum of -18°C (0°F) to a mild maximum of 8°C (46°F), with an average temperature of -3°C (27°F). The month is quite wet, with 198 mm (7.8 in) of precipitation spread over 19 days and a high humidity level of 90%. In contrast, March sees a wider temperature range, with minimums dropping to -25°C (-13°F) and maximums rising to 15°C (60°F), resulting in an average temperature of 0°C (33°F). Precipitation is less frequent, totaling 148 mm (5.8 in) over 18 days, and humidity slightly decreases to 87%. For more detailed insights, you can check Glarus weather in March.

December and April showcase contrasting weather patterns, reflecting the shift from winter to spring. In December, temperatures can plummet to a minimum of -18°C (0°F), with an average around -3°C (27°F) and a maximum of 8°C (46°F). This month experiences significant precipitation, totaling 198 mm (7.8 in) over approximately 19 days, accompanied by high humidity levels at 90%. In comparison, April reveals a more temperate climate, with minimum temperatures dipping to -19°C (-2°F), but averaging 4°C (40°F) and peaking at a pleasant 19°C (67°F). Precipitation decreases to 124 mm (4.9 in) over 14 days, and humidity levels drop slightly to 84%. This transition highlights the gradual warming and reduced moisture typical of early spring. For more detailed insights, you can explore Glarus weather in April.

December weather in Glarus is characterized by frigid temperatures, with a minimum dipping to -18°C (0°F) and an average of -3°C (27°F), while the maximum reaches only 8°C (46°F). The month sees significant precipitation, totaling 198 mm (7.8 in), spread over 19 days, accompanied by high humidity at 90%. In stark contrast, May brings a more temperate climate with a minimum temperature of -8°C (17°F), an average of 8°C (46°F), and maximums soaring to 24°C (76°F). Although May experiences slightly more precipitation at 209 mm (8.2 in), it occurs over 23 days, and humidity is lower at 80%. For a closer look at the climate during this spring month, check out Glarus weather in May.

In December, the weather in Glarus is starkly cold, with temperatures ranging from a chilling -18°C (0°F) to a maximum of 8°C (46°F), averaging around -3°C (27°F). The month is also characterized by high humidity levels at 90% and significant precipitation, totaling 198 mm (7.8 in) over 19 days. In contrast, June offers a significantly warmer climate, with temperatures varying from a minimum of 0°C (32°F) to a comfortable maximum of 29°C (84°F), averaging 13°C (56°F). Although June sees slightly more precipitation at 239 mm (9.4 in) spread over 21 days, the humidity remains lower at 82%. For more details on June weather in Glarus, visit Glarus weather in June.

December and July present stark contrasts in weather patterns. In December, temperatures can plummet as low as -18°C (0°F), with an average temperature around -3°C (27°F) and maximums reaching only 8°C (46°F). The month is marked by high humidity levels at 90% and considerable precipitation, totaling 198 mm (7.8 in) over approximately 19 days. Conversely, July brings milder conditions, with a minimum temperature of 5°C (40°F), an average of 14°C (58°F), and a maximum reaching 28°C (83°F). Although July experiences more rainfall, averaging 264 mm (10.4 in) across 22 days, the humidity is slightly lower at 83%. For more details on July weather specifically, you can check out Glarus weather in July.

December and August present contrasting weather conditions. In December, temperatures range from a chilly -18°C (0°F) to a mild maximum of 8°C (46°F), with an average of -3°C (27°F). This month is marked by high humidity levels at 90% and a significant amount of precipitation, totaling 198 mm (7.8 in) over 19 days. In stark contrast, August boasts much warmer temperatures, with a minimum of 4°C (39°F) and a pleasant maximum of 26°C (79°F), averaging around 14°C (57°F). Although August receives more precipitation at 289 mm (11.4 in) over 22 days, the humidity is lower at 80%. For more details on August weather, visit Glarus weather in August.

December and September present starkly contrasting weather conditions. In December, temperatures plunge significantly, with a minimum of -18°C (0°F) and an average of -3°C (27°F), while September enjoys milder conditions, ranging from a minimum of -4°C (26°F) to an average of 10°C (51°F). The maximum temperatures in December peak at 8°C (46°F), whereas September reaches a comfortable high of 23°C (73°F). Precipitation levels are similar, with December receiving 198 mm (7.8 in) over 19 days, while September totals 191 mm (7.5 in) over 18 days. Additionally, December's humidity reaches a higher average of 90%, compared to September's 83%, making the latter month feel significantly more pleasant. For more detailed information, see Glarus weather in September.

When comparing the weather in December and October, notable differences emerge. In December, temperatures drop significantly, with a minimum of -18°C (0°F) and an average of -3°C (27°F), compared to October’s milder conditions, which see a minimum of -4°C (24°F) and an average of 6°C (44°F). December is characterized by more precipitation, with 198 mm (7.8 in) over 19 days, while October records slightly less at 168 mm (6.6 in) over 14 days. Despite both months having high humidity levels at 90%, October's overall weather feels much more temperate, making it a more favorable month for outdoor activities. For a detailed look at October weather specifics, check out Glarus weather in October.

In comparing the weather of December to November, December presents significantly colder temperatures, with a minimum of -18°C (0°F) and an average of -3°C (27°F), contrasted with November's milder minimum of -14°C (8°F) and average of 1°C (34°F). While November experiences maximum temperatures reaching 16°C (61°F), December struggles to peak at 8°C (46°F). Additionally, December has substantially higher precipitation levels at 198 mm (7.8 in) over 19 days, compared to November's 104 mm (4.1 in) over just 13 days. Humidity levels remain relatively high, with December at 90% and November slightly lower at 88%. For more detailed information, you can visit Glarus weather in November.

Compare Glarus's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Glarus

In Glarus, December presents a striking contrast to the milder months that precede it. With temperatures dropping to an average of -3°C and occasional chills reaching as low as -18°C, the holiday spirit often comes wrapped in a blanket of frost. Rainfall during this month is significant, with nearly 200 mm spreading across 19 days, contributing to a humid atmosphere that hovers around 90%. This blend of cold air and moisture sets the stage for enchanting winter scenes, differentiating December from the warmer and drier months of the year. For a more detailed look at the climatic nuances of Glarus, visit Glarus Climate.