Last updated: August 27, 2025
In December, Bern, Switzerland experiences a chilly climate characterized by an average temperature of 2°C (37°F), with highs reaching 14°C (57°F) and lows dipping to -6°C (21°F). The month is quite wet, with a total precipitation of 125 mm (4.9 in) spread over 18 days, contributing to an impressive humidity level of 91%. This combination of cold temperatures and frequent rain can create a picturesque winter ambiance, perfect for enjoying the enchanting holiday season in this historic city.
In December, Bern, Switzerland, experiences a notable dip in temperatures as winter settles in. With minimums around -6°C (21°F), the biting cold is evident, making it one of the colder months of the year. The average temperature hovers at 2°C (37°F), while the highs reach a modest 14°C (57°F). This month marks a shift from the milder temperatures of November—where averages were around 5°C (41°F)—emphasizing the deepening chill as the year draws to a close. While not frigid, December's weather introduces a crispness that complements the festive atmosphere, encouraging locals and visitors alike to bundle up and enjoy the enchanting winter landscape.
As December arrives in Bern, Switzerland, the city's landscapes transform under the weight of atmospheric moisture. With an impressive 125 mm (4.9 in) of precipitation spread over 18 days, December stands out as one of the wetter months of the year, just behind the verdant May. This significant rainfall is a notable shift from the relatively drier late autumn months, reflecting the transition into winter where the combination of colder temperatures and increased precipitation often paint the city in a charming wintery landscape. The heightened number of precipitation days signals a month characterized by frequent drizzles and occasional heavier showers, setting the stage for the tranquil beauty of the Swiss winter.
As December arrives in Bern, Switzerland, the city experiences a peak in humidity, mirroring the levels of January at 91%. This increase marks a significant trend as the year closes, with the last month often reflecting the wetter conditions characteristic of the winter season. The humidity gradually decreases from a high of 91% in January and November to a milder 77% in August, before rising again in the cooler months. This cyclical pattern highlights Bern's distinct seasonal variations, where the chill of December, combined with elevated humidity, creates a unique atmospheric ambiance that wraps the city in a misty winter charm.
In December, Bern enjoys a low UV Index of 2, which means sun exposure is minimal and the risk of skin damage is low, making it an ideal time for outdoor winter activities without worrying about sunburn. This trend of reduced UV levels is consistent with the previous months of November and January, which also feature a low UV Index of 2, providing a buffer during the colder seasons. As the year transitions from the sun-drenched heights of June and July, where the UV Index peaks at 9, to the serene winter months, residents can take comfort in knowing they have 45 minutes of burn time without significant risk. For more detailed information on the UV Index throughout the year, visit Bern UV Index.
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In December, Bern, Switzerland, experiences a modest 185 hours of sunshine, marking a dip as the year winds down. This trend follows a gradual decrease from the vibrant heights of July, which boasts a sun-filled 417 hours. As autumn transitions into winter, sunlight hours decline steadily, with November offering just 224 hours before December’s further reduction. The months preceding December, particularly March through June, shine brightly with peak hours that highlight the city’s sunny allure during the spring and summer. The contrast with December serves as a reminder of the seasonal rhythms that shape Bern's climate, where shorter days create a beautiful, serene ambiance as the year approaches its close.
In December, Bern, Switzerland, enjoys a 29% chance of sunny weather, a figure that reflects the lingering chill of winter. This probability stands out as a modest increase from the 25% likelihood seen in November, yet it remains low compared to the sunnier months earlier in the year. Notably, the transition from autumn to winter often brings more cloud cover, making each sunlit day in December a precious occurrence. As the year closes, residents and visitors alike can appreciate the fleeting moments of sunshine amidst the season's crisp air and festive atmosphere.
In Bern, Switzerland, the daylight duration reflects a clear seasonal pattern that ebbs and flows throughout the year. As December settles in, the city experiences a return to shorter days, offering only about 8 hours of daylight. This is in stark contrast to the sun-soaked months of May through July, when daylight stretches to a generous 15 hours. The gradual transition from winter to spring is marked by an increase in light, with February providing a welcome 10 hours, and March further brightening to 11 hours. As the year progresses into the vibrant blooms of April, daylight peaks at 13 hours, before gently tapering off again in autumn. This rhythmic dance of daylight not only shapes daily life in Bern but also encapsulates the beauty of seasonal change in this picturesque Swiss city.
As December settles over Bern, Switzerland, the city experiences an average wind speed of 2.1 m/s (5 mph), mirroring the gentle breezes of early spring months. This consistency in wind speed suggests a stable climatic transition as the year comes to a close, following the subtle variations seen in previous months. Notably, while June through September offered some of the lightest winds, the latter part of the year — particularly November and December — brings a slight uptick in air movement. As the festive season unfolds, these soft winds create an inviting atmosphere, perfectly complementing the winter charm of Bern.
Weather in Bern varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Bern, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January weather exhibit some notable differences while sharing a similar humidity level of 91%. In December, temperatures range from a chilly minimum of -6°C (21°F) to a milder maximum of 14°C (57°F), with an average temperature of 2°C (37°F) and a higher precipitation level of 125 mm (4.9 in) occurring over 18 days. In contrast, January tends to be colder, with minimum temperatures plunging to -14°C (6°F) and an average of 1°C (34°F), despite the maximum reaching 17°C (63°F). Precipitation decreases to 91 mm (3.6 in) over 12 days, indicating a drier month overall. For a detailed look at Bernard's January climate, check out Bern weather in January.
December and February present distinct weather patterns, showcasing the transition from the depths of winter to the early signs of spring. In December, temperatures range from a minimum of -6°C (21°F) to a maximum of 14°C (57°F), with an average of 2°C (37°F). The month experiences significant precipitation, totaling 125 mm (4.9 in) over 18 days, accompanied by high humidity levels at 91%. In contrast, February sees slightly colder temperatures, with a minimum of -11°C (13°F) and a maximum of 18°C (65°F), yielding an average temperature of 4°C (39°F). Precipitation decreases to 74 mm (2.9 in) over 11 days, and humidity remains slightly lower at 89%. This highlights February as a season with less rain yet still frigid conditions, making it an interesting time of year. For more detailed insights, you can check out Bern weather in February.
December and March present contrasting weather patterns, showcasing the transition from winter to early spring. In December, temperatures tend to be cooler, with a minimum of -6°C (21°F) and an average of 2°C (37°F), while March sees slightly milder conditions with a minimum of -13°C (8°F) and an average of 6°C (43°F). Precipitation is higher in December at 125 mm (4.9 in), occurring over 18 days, compared to March's 91 mm (3.6 in) over 15 days. Additionally, humidity levels remain high in both months, with December at 91% and March at 87%. For more detailed insights into the March weather, you can visit Bern weather in March.
December and April present a striking contrast in weather conditions. In December, temperatures can dip as low as -6°C (21°F) and generally hover around an average of 2°C (37°F), with a maximum of 14°C (57°F). The month is characterized by high humidity at 91% and significant precipitation of 125 mm (4.9 in) over about 18 days. In contrast, April sees milder temperatures, with minimums of -5°C (23°F) and averages rising to 10°C (50°F), peaking at 25°C (78°F). Additionally, April experiences less precipitation at 61 mm (2.4 in) across fewer days—just 10 days—coupled with slightly lower humidity levels at 84%. For a closer look at what April has to offer, you can check out Bern weather in April.
December and May showcase strikingly different weather patterns. In December, temperatures range from a chilly -6°C (21°F) at their lowest to a mild 14°C (57°F) at their highest, with an average of just 2°C (37°F). The month experiences considerable precipitation, totaling 125 mm (4.9 in) over 18 days, and a high humidity level of 91%. In contrast, May ushers in warmer temperatures that vary from a minimum of -2°C (28°F) to a sizzling maximum of 30°C (86°F), with an average around 13°C (56°F). Although the precipitation is similar at 126 mm (5.0 in), it occurs over fewer days—only 16—with humidity decreasing to 80%. For more detailed information on May weather, you can check Bern weather in May.
December and June present stark contrasts in weather conditions. December's temperatures range from a chilly -6°C (21°F) to a mild 14°C (57°F), with an average of 2°C (37°F), creating a cold and wintry atmosphere. In contrast, June enjoys a much warmer climate, with temperatures fluctuating between a minimum of 6°C (42°F) and a maximum of 34°C (94°F), averaging around 18°C (65°F). While December experiences higher precipitation levels at 125 mm over 18 days and 91% humidity, June sees a lighter rainfall of 93 mm across 15 days and a slightly lower humidity of 82%. For more details on the June weather in Bern, you can check out Bern weather in June.
December and July present stark contrasts in weather. In December, temperatures range from a chilly -6°C (21°F) at night to a mild 14°C (57°F) during the day, with an average of 2°C (37°F). This winter month also sees significant precipitation, totaling 125 mm (4.9 in) over 18 days, and high humidity levels at 91%. In contrast, July boasts much warmer conditions, with nighttime lows of 9°C (49°F) and daytime highs reaching up to 36°C (97°F), averaging 20°C (68°F). Precipitation is slightly lower at 104 mm (4.1 in), spread over 14 days, and humidity is relatively lower at 82%. For a closer look at the warmth of July in Bern, check out Bern weather in July.
December and August present contrasting weather patterns. December experiences colder temperatures, with a minimum of -6°C (21°F) and an average of 2°C (37°F), while August boasts a much warmer minimum of 8°C (47°F) and an average of 19°C (67°F). Precipitation levels are relatively close, with December receiving 125 mm over 18 days compared to August's 98 mm over 12 days. Additionally, December's humidity is notably higher at 91%, in contrast to August's more moderate 77%. For a detailed look at August weather specifics, visit Bern weather in August.
December and September present stark contrasts in weather. In December, temperatures range from a chilly -6°C (21°F) to a mild 14°C (57°F), with an average around 2°C (37°F). The month experiences significant precipitation, totaling 125 mm (4.9 in) over approximately 18 days, alongside high humidity levels of 91%. In contrast, September boasts a more comfortable climate, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 29°C (84°F) and an average of 15°C (60°F). Precipitation in September is considerably lower, measuring 61 mm (2.4 in) over about 11 days, and humidity is slightly less at 81%. For a detailed look at September weather, check out Bern weather in September.
When comparing the weather in December to that of October, noticeable differences emerge. December experiences colder temperatures, with a minimum of -6°C (21°F) and an average of just 2°C (37°F), while October is milder, featuring a minimum of -2°C (29°F) and an average of 11°C (51°F). Additionally, October tends to be drier, with only 95 mm (3.7 in) of precipitation over 13 days, compared to December's 125 mm (4.9 in) spread over 18 days. Humidity levels are also slightly higher in December at 91% compared to October's 89%. For more details, visit Bern weather in October.
In December, the weather tends to be colder and wetter compared to November. The average temperature drops to around 2°C (37°F), with minimums reaching as low as -6°C (21°F), while November boasts a milder average of 5°C (41°F) and highs of up to 20°C (69°F). Additionally, December experiences more precipitation, totaling 125 mm (4.9 in) over 18 days, compared to November's 72 mm (2.8 in) over 12 days. Humidity levels also slightly increase in December, averaging 91% compared to November's 89%. For more detailed information about November weather, you can check Bern weather in November.
As December unfolds in Bern, it ushers in a chill that sets it apart from the milder months of the year. With temperatures often dipping down to well below freezing, the capital transforms into a winter wonderland, contrasted by a high level of humidity that leaves the air crisp and invigorating. This month also sees a notable increase in precipitation, with frequent rain and occasional snow blanketing the city, making it one of the wettest periods in the annual cycle. With an average of 18 rainy days, December's weather offers a unique atmosphere that distinguishes it from the drier, warmer months. Discover more about the climate in this beautiful city by visiting Bern Climate.