December Weather in Zernez, Switzerland

Last updated: August 27, 2025

In Zernez, Switzerland, December presents a chilly embrace with average temperatures hovering around -9°C (17°F), while maximums reach only 3°C (38°F). As winter deepens, the landscape often glistens under a layer of snow, especially when minimum temperatures plunge to -27°C (-16°F). The month is also marked by significant precipitation, accumulating to 132 mm (5.2 in) over approximately 16 days, contributing to a humid atmosphere with levels around 90%. Visitors can expect a serene, picturesque winter setting, perfect for those who appreciate the beauty of alpine winterscapes.

December Temperature in Zernez

In Zernez, Switzerland, December brings a notable chill as winter fully takes hold. The minimum temperatures plummet to around -27°C (-16°F), while the average hovers around -9°C (17°F), signaling a stark contrast to the more temperate months preceding it. As the month progresses, daytime highs struggle to reach a mere 3°C (38°F), capping a season where the sun's warmth feels like a memory. This trend of frigid temperatures not only defines December but also sets the stage for the cold yet picturesque winter landscape that characterizes Zernez. Embracing layers and cozy hotspots becomes essential as residents and visitors alike navigate the serene beauty of this snowy paradise.

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

The chart illustrates December temperature patterns in Zernez, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Zernez, 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).
JanFebMarAprMayJunJulAugSepOctNovDec131924323949515144362417
Data source: Temperature data for Zernez 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 Zernez

In Zernez, Switzerland, December marks a notable transition into the winter season, bringing an average precipitation of 132 mm (5.2 in) over 16 days. This reflects a slight increase when compared to November's 102 mm, highlighting the area's propensity for wetter conditions as the year draws to a close. The pattern of precipitation suggests that while December retains an average number of rainy days, the total amount indicates that winter weather is beginning to assert itself more prominently. With snowfall beginning to intermingle with rainfall, this month serves as a harbinger of the moderate yet persistent moisture that characterizes the Swiss winter landscape.

December Precipitation Trends in Zernez

The chart displays monthly precipitation patterns in Zernez, 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 Zernez, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec97669380161141158194134126102132
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Zernez

In Zernez, Switzerland, December sees humidity levels rise to 90%, mirroring the trend of the preceding months and contributing to the region's characteristic winter chill. From a high of 92% in January, humidity experiences a gradual decline until it reaches the year’s lowest point in May at 80%. However, as autumn settles in, humidity levels rebound, reaching 88% in November before hitting that winter peak again in December. This fluctuation highlights a seasonal pattern where winter months tend to be significantly more humid, creating a cozy, albeit damp, atmosphere perfect for enjoying the captivating alpine scenery.

December Average Humidity in Zernez

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

In Zernez, Switzerland, December ushers in a return to a low UV Index of 2, signifying a significantly reduced risk of overexposure to sunlight compared to the peak summer months. With a burn time of 45 minutes, this winter month allows for more leisurely outdoor activities without the pressing need for heavy sun protection. As the year progresses, there’s a clear trend of increasing UV exposure from the gloomy winter days of January to the extreme levels in June and July, where protective measures become crucial with an Index soaring to 11. By December, however, the focus shifts towards enjoying the beautiful snow-covered landscapes with less concern for sunburn. To track UV levels throughout the year, visit Zernez UV Index for the latest updates and insights.

Maximum UV Index Levels in Zernez for December

The chart shows the monthly maximum UV Index (UVI) for Zernez 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 Zernez typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec247810111197632
Data source: Zernez 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 Zernez

As the year winds down, Zernez, Switzerland welcomes December with a modest 200 hours of sunshine, a gentle decline from the vibrant light of earlier months. Following the luminous peak of summer, where July dazzles with 411 hours, the days gradually shorten as autumn gives way to winter, bringing crisp air and shorter daylight. Despite this reduction, December still offers a comforting glow, reminding us that the sun persists even in the chill of winter. The trend shows a steady decrease from the summer's abundance to the softer, more tranquil light of late autumn and early winter, capturing the essence of Zernez's serene landscapes blanketed in snow. Each hour of sunshine in this enchanting town brings a touch of warmth, inviting visitors to embrace the beauty of the season.

Monthly Sunshine Duration in Zernez: December Highlighted

The December sunshine duration represents the total number of hours Zernez 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.
JanFebMarAprMayJunJulAugSepOctNovDec178h240h313h350h363h389h411h369h311h282h222h200h
Data source: Zernez December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Zernez During December

In Zernez, Switzerland, December's likelihood of sunny weather hovers around 36%, marking it as a period where glimpses of sunshine appear more often than in the earlier winter months like January and November, which feature only 20% and 30% chances, respectively. As the year progresses from winter to spring, the probability of sunny days generally increases, peaking in February at 42%. This trend suggests that while December may not be the sunniest month, it offers a promising escape from the dreary days of early winter, making it an enchanting time to experience the charming landscape embellished with snow under occasional blue skies.

Percentage of Sunny Days in December in Zernez

The chart illustrates the percentage of sunny days in Zernez 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 Zernez experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%43%40%38%30%34%32%30%32%40%30%36%
Data source: Zernez December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Zernez in December

As the year unfolds in Zernez, Switzerland, daylight duration reflects the changing seasons with a clear rhythm. December ushers in the shortest days, offering only 8 hours of daylight as winter settles in. This marks a gentle decline from the 9 hours in November and a stark contrast to the vibrant 15 hours experienced in May and June when the days are long and lively. Following December, daylight begins to gradually extend, paving the way for brighter months ahead. The transition from 8 hours to 10 hours in February signals the promise of spring, as each month brings a slow yet consistent increase, culminating in the radiance of summer. This cyclical pattern not only showcases the beauty of nature's progression but also highlights Zernez's unique alpine charm through the changing light.

Average Daylight Hours in Zernez for December

The chart illustrates the variation in daylight duration in Zernez throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h10h 18m11h 56m13h 36m15h 2m15h 46m15h 23m14h 6m12h 30m10h 50m9h 22m8h 36m
Data source: Zernez daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Zernez

In Zernez, Switzerland, December brings a gentle breeze, with an average wind speed of 1.3 m/s (about 3 mph), marking it as one of the calmest months of the year. As the seasons transition from the vibrant autumn days into the crispness of winter, the winds follow a subtle pattern; overall, the wind speeds remain fairly consistent throughout the year, generally hovering around 1.4 to 1.7 m/s. Notably, December's slight dip in wind speed resonates with the tranquil atmosphere of the festive season, a stark contrast to the breezier months of May and October. This serene December wind invites visitors to bask in the stunning winter scenery, making it an idyllic time for leisurely strolls through the snow-dusted landscapes of this charming alpine village.

Average December Wind Speed in Zernez

The chart displays monthly wind speed patterns in Zernez, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.61.41.51.71.61.61.41.31.61.41.3 m/s
Data source: Zernez December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Zernez Compares to Other Months

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

Comparing the weather in December and January reveals some notable differences. December experiences slightly milder temperatures, with a minimum of -27°C (-16°F) and a maximum of 3°C (38°F), averaging around -9°C (17°F). In contrast, January is colder overall, with temperatures dipping to a minimum of -31°C (-23°F) and averaging -10°C (14°F), although it reaches a higher maximum of 5°C (41°F). Precipitation is more frequent in December, occurring on 16 days with a total of 132 mm (5.2 in), compared to January's 11 days and 97 mm (3.8 in). The humidity levels remain quite high in both months, with December at 90% and January slightly higher at 92%. For more detailed information, you can visit Zernez weather in January.

December and February both feature frigid temperatures, but there are distinct differences between the two months. In December, the temperatures range from a minimum of -27°C (-16°F) to a maximum of 3°C (38°F), with an average of -9°C (17°F). This month also experiences higher precipitation, totaling 132 mm (5.2 in) over 16 days, with humidity at a notably high 90%.

In contrast, February is slightly colder, with minimum temperatures reaching -28°C (-18°F) and maximums hitting 6°C (44°F), resulting in a small increase in the average temperature to -7°C (19°F). Additionally, February sees lower precipitation levels of 66 mm (2.6 in) over 11 days, along with a slightly lower humidity of 89%. For a detailed look at the weather specific to this month, you can check Zernez weather in February.

December and March showcase notable differences in weather despite their close proximity in the calendar year. In December, temperatures can plunge to a chilling minimum of -27°C (-16°F), with an average of -9°C (17°F) and a maximum of only 3°C (38°F). This month also witnesses heavy precipitation, with 132 mm (5.2 in) falling over 16 days and humidity levels hovering at a high 90%. In contrast, March experiences a slight reprieve from the deep winter chill, with minimum temperatures around -26°C (-14°F), an average of -4°C (24°F), and maximums reaching 9°C (48°F). Additionally, there is less precipitation, totaling 93 mm (3.7 in) across the same number of days, and humidity levels are slightly lower at 87%. For more insights into March weather, visit Zernez weather in March.

In December, temperatures plunge to a minimum of -27°C (-16°F), with an average of -9°C (17°F) and a maximum of just 3°C (38°F). The month experiences significant precipitation, totaling 132 mm (5.2 in) over 16 days, accompanied by high humidity levels of 90%. In contrast, April brings a notable shift in weather with minimum temperatures around -22°C (-8°F) and an average of 0°C (32°F), peaking at 14°C (57°F). Precipitation decreases to 80 mm (3.2 in) spread over 12 days, while humidity drops slightly to 84%. For more insights on the weather during this month, check out Zernez weather in April.

December weather is characterized by cold temperatures, with a minimum of -27°C (-16°F) and an average of -9°C (17°F), making it a frigid month. Precipitation occurs on 16 days, contributing to the high humidity of 90%. In contrast, May brings a significant warming trend, with temperatures ranging from a minimum of -15°C (5°F) to a maximum of 19°C (67°F) and an average of 4°C (39°F). While it experiences more days of precipitation at 22 days, the total amount of rainfall is slightly higher at 161 mm (6.3 in) and the humidity level decreases to 80%. For more detailed information, you can check Zernez weather in May.

December and June present stark contrasts in weather conditions. In December, temperatures plunge to a minimum of -27°C (-16°F), with an average of -9°C (17°F) and a maximum barely reaching 3°C (38°F). The month is characterized by high humidity at 90% and frequent precipitation, occurring on 16 days, totaling 132 mm (5.2 in). In contrast, June showcases a much milder climate, with temperatures ranging from a minimum of -3°C (26°F) to a comfortable average of 10°C (50°F) and a peak of 25°C (77°F). Although it sees slightly more precipitation at 141 mm (5.5 in) over 20 days, the humidity remains lower at 82%. This shift from the harsh chill of December to the more temperate June illustrates the dramatic seasonal changes. For more specific details, you can check Zernez weather in June.

In December, the weather in Zernez can be quite harsh, with temperatures plummeting to a minimum of -27°C (-16°F) and averaging around -9°C (17°F), creating a winter wonderland that feels frigid and damp, particularly with a high humidity of 90%. In contrast, July offers a much milder climate, where temperatures range from a minimum of 1°C (33°F) to a pleasant maximum of 24°C (76°F), making it conducive for outdoor activities. July also sees more precipitation, at 158 mm (6.2 in) over about 21 days, but the warmth and lower humidity of 83% create a vastly different experience compared to the cold December months. For more specific details about the weather during July, you can visit Zernez weather in July.

December and August exhibit starkly contrasting weather conditions. December features frigid temperatures with a minimum of -27°C (-16°F) and an average of -9°C (17°F), peaking at a mere 3°C (38°F). This cold month experiences considerable precipitation, totaling 132 mm (5.2 in) across 16 days, accompanied by high humidity at 90%. In contrast, August offers a much milder climate with temperatures ranging from a minimum of -1°C (30°F) to an average of 10°C (51°F), peaking at a comfortable 22°C (71°F). Although August receives more precipitation at 194 mm (7.6 in) over 21 days, the humidity is slightly lower at 80%. For a closer look at the weather during this vibrant summer month, check out Zernez weather in August.

December and September present stark contrasts in weather conditions. December experiences much colder temperatures, with a minimum of -27°C (-16°F) and an average of -9°C (17°F), while September is milder, with a minimum of -12°C (10°F) and an average temperature of 6°C (44°F). Precipitation levels are similar, with December recording 132 mm (5.2 in) over 16 days and September slightly higher at 134 mm (5.3 in) over the same number of days. Additionally, humidity in December is significantly higher at 90%, compared to September’s 83%. For more detailed insights on September weather, you can check Zernez weather in September.

In December, the weather is significantly colder than in October, with average temperatures plunging from 2°C (37°F) in October to around -9°C (17°F) in December. While both months experience high humidity at 90%, December sees more frigid minimum temperatures, dropping to -27°C (-16°F), compared to October's milder minimum of -13°C (8°F). Additionally, precipitation remains fairly consistent, with December receiving 132 mm (5.2 in) over 16 days, slightly more than October's 126 mm (5.0 in) over 12 days. To explore more about the October weather conditions, you can check this link: Zernez weather in October.

In December, the weather is noticeably colder compared to November, with average temperatures dropping from -4°C (24°F) in November to -9°C (17°F) in December. The minimum temperature in December reaches a chilling -27°C (-16°F), while November's low is slightly milder at -23°C (-9°F). December also sees an increase in precipitation, totaling 132 mm (5.2 in) over 16 days, compared to November's 102 mm (4.0 in) over 13 days. Humidity levels are quite high in both months, averaging 90% in December and 88% in November. This makes December feel particularly damp and cold. For more detailed insights into November weather, visit Zernez weather in November.

Compare Zernez's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Zernez

December in Zernez presents a stark contrast to the milder months of the year, with temperatures plunging to chilly lows and a significant increase in precipitation. This month is characterized by its wintry embrace, where biting cold sets in, making average temperatures feel much lower than in autumn. The humidity level remains high, often lending a crispness to the air that is both invigorating and refreshing. With over half of the month seeing some form of precipitation, December stands out as a time when the landscape transforms under a blanket of snow, inviting outdoor winter activities. For those intrigued by the seasonal shifts and unique climate of Zernez, more details can be found here: Zernez Climate.