Last updated: March 24, 2025
December in Aosta, Italy, offers a charming winter atmosphere characterized by chilly temperatures and picturesque snow-covered landscapes. The month sees maximums reaching 4°C (39°F), while average lows plummet to a biting -8°C (18°F), setting the stage for a true winter wonderland. With temperatures dipping as low as -23°C (-9°F), bundled layers become essential for exploring this historic region. The city experiences around 165 mm (6.5 in) of precipitation over 17 days, contributing to high humidity levels of 90% that create a brisk, crisp air. Visitors can expect a season filled with scenic beauty and festive charm, perfect for winter sports and cozy gatherings.
In December, Aosta, Italy experiences a chilly climate that sets the stage for winter festivities. The temperatures dive to a minimum of -23°C (-9°F), with average readings hovering around -8°C (18°F), and peaking at 4°C (39°F). This notable drop from November’s already brisk conditions marks the onset of winter's full embrace, as Aosta transforms into a winter wonderland. The stark contrasts in temperature not only highlight the cold but also introduce a serene beauty to the snow-covered landscapes, perfect for skiing and holiday cheer. With each passing December, visitors can expect to feel the crispness of the air while sipping on warm beverages and taking in the breathtaking alpine scenery.
December in Aosta, Italy, marks a significant transition into winter, as evidenced by an average precipitation of 165 mm (6.5 in), making it the wettest month of the year. This spike in rainfall, spanning about 17 days, is notably higher than the preceding months, highlighting a trend of increasing moisture as the colder season sets in. Following the relatively dry autumn months with November's 117 mm, December's precipitation underscores a shift as the region prepares for snow, adding to the already festive atmosphere. The combination of shorter days and increased precipitation creates a cozy ambiance, making it the ideal time for residents and visitors to embrace the holiday spirit amidst the enchanting mountain backdrop.
As the year draws to a close, December in Aosta, Italy, sees humidity levels consistently high at 90%, mirroring the previous months of October and November. This trend highlights the area's substantial moisture retention throughout late autumn and into winter, creating a stark contrast to the drier conditions experienced during the peak summer months of July and August, when humidity dipped to 72% and 63% respectively. The gradual rise from summer's comfortable low to December's chilly wetness reflects the seasonal shift, where cooler temperatures coincide with increased atmospheric moisture, enhancing the region’s cozy charm as the holiday season approaches.
In Aosta, Italy, the UV Index experiences a notable decrease as winter approaches, with December marking a low at 2, categorized as low exposure. This means that residents and visitors can enjoy outdoor activities with a more relaxed approach to sun safety, boasting a burn time of 45 minutes before needing protection. The UV Index trends throughout the year show a sharp ascent from moderate levels in winter to extreme values during the peak summer months, indicating the importance of adapting sun protection strategies seasonally. With the winter months offering less intense UV radiation, December provides a welcome respite from the sun's harsher effects. For detailed insights on UV levels, visit Aosta UV Index.
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In the enchanting valley of Aosta, December brings a modest 212 hours of sunshine, a slight dip from the previous month but a testament to the region's serene winter charm. As the year winds down, the sun's rays gradually retreat from the vibrant heights of 424 hours in July, guiding us through the crisp air of late fall and early winter. This pattern highlights Aosta's evolving landscape, where cold, snow-covered peaks contrast beautifully with the softer light of December. Though the sunshine diminishes, the allure of the region remains strong, inviting visitors to embrace the magic of winter in this picturesque Italian haven.
In Aosta, Italy, December presents a 40% chance of sunny weather, marking a slight uptick as the year comes to a close. This percentage is a continuation of a trend observed through late fall, with November seeing a 30% chance and October at 43%. Interestingly, while December doesn't boast the highest likelihood of sunshine, it does remain relatively favorable compared to the often cloudier months of January and February. As winter sets in, the chances of sun peak during the transitional months of March and August, highlighting that December stands as a unique blend of winter charm and glimmers of sunlight.
In Aosta, Italy, the daylight duration experiences a captivating cycle throughout the year. It begins its journey in December, where the sun graces the valley with just 8 hours of light, the shortest of the year. As winter wanes and spring approaches, daylight steadily increases, peaking in June and July when the region basks in a generous 15 hours. This gradual rise showcases the progress from the dark winter months, with February offering a welcome 10 hours and March extending it to 11 hours. As the seasons transition into fall, daylight begins to retreat, tapering back to 10 hours in October and returning to 9 hours by November. The rhythm of light not only marks the changing seasons but also invites residents and visitors alike to embrace the beauty of daylight's ebb and flow in this enchanting Alpine landscape.
In December in Aosta, Italy, the wind picks up slightly, with an average speed of 1.5 m/s (3 mph), marking a gentle increase from the calmer months leading up to it. Observing the yearly trend, it’s interesting to note that while most months experience fluctuating winds, December offers a refreshing breath of air, surpassing the lightest wind speeds seen in mid-summer and early autumn. This subtle yet noticeable uptick creates a unique atmosphere, as residents and visitors alike can enjoy the crisp winter air while embracing the picturesque alpine scenery—making for a delightful European winter experience.
The weather in Aosta changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Aosta and find detailed weather information for every month.
In December, temperatures typically range from a minimum of -23°C (-9°F) to a maximum of 4°C (39°F), with an average of -8°C (18°F). The month experiences significant precipitation, totaling 165 mm (6.5 in) over approximately 17 days, along with a high humidity level of 90%. In contrast, January brings slightly colder conditions, with minimum temperatures dipping to -25°C (-13°F) and an average of -9°C (16°F), while the maximum remains the same at 4°C (39°F). Precipitation decreases to 114 mm (4.5 in) over about 10 days, and humidity remains similar at 91%. For more insights, you can check Aosta weather in January.
December and February both present cold winter weather, but they exhibit some notable differences. In December, temperatures can plunge as low as -23°C (-9°F), with an average of -8°C (18°F) and a maximum reaching 4°C (39°F). The month is quite wet, with 165 mm (6.5 in) of precipitation over 17 days and high humidity at 90%. In contrast, February typically experiences slightly milder conditions, with temperatures ranging from a minimum of -22°C (-7°F) to an average of -6°C (22°F) and a maximum of 8°C (47°F). Precipitation decreases significantly to 79 mm (3.1 in) over 12 days, coupled with a slightly lower humidity of 87%. This shift in weather makes February feel a bit more bearable than December. For more detailed insights on February weather, check out Aosta weather in February.
December and March present distinctly different weather patterns. In December, temperatures can drop to a minimum of -23°C (-9°F), with an average of -8°C (18°F) and a high of only 4°C (39°F). The month experiences significant precipitation, totaling 165 mm (6.5 in) over 17 days, with humidity levels reaching a high of 90%. In contrast, March sees slightly warmer conditions, with minimum temperatures around -25°C (-13°F) and an average of -4°C (25°F), peaking at 10°C (50°F). The precipitation decreases to 106 mm (4.2 in) over 15 days, and humidity levels drop to 84%. For more insights into March weather conditions, check out Aosta weather in March.
In December, the weather is characterized by significantly colder temperatures, with a minimum of -23°C (-9°F) and an average of -8°C (18°F), whereas April sees a notable warming trend with temperatures ranging from a minimum of -16°C (4°F) to a comfortable average of 0°C (32°F). While December experiences higher precipitation with 165 mm (6.5 in) across 17 days, April has milder precipitation totaling 83 mm (3.3 in) over 11 days. Additionally, the humidity levels are higher in December at 90%, compared to 83% in April, making the latter month feel somewhat drier. For more detailed insights on April weather, you can check Aosta weather in April.
December and May present stark contrasts in weather. In December, temperatures can plummet as low as -23°C (-9°F), with an average of -8°C (18°F) and a maximum of just 4°C (39°F). The month experiences significant precipitation, totaling 165 mm (6.5 in) over 17 days, accompanied by high humidity levels around 90%. In contrast, May offers a much milder climate, with temperatures ranging from a minimum of -12°C (11°F) to a comfortable maximum of 18°C (65°F), averaging around 4°C (40°F). Although May sees a similar amount of precipitation, at 144 mm (5.7 in) over 20 days, the humidity is noticeably lower at 78%. The differences between these two months highlight the transition from winter's chill to the gradual warmth of spring. For further insights, you can explore Aosta weather in May.
December and June present stark contrasts in weather. December is characterized by frigid temperatures, with a minimum of -23°C (-9°F) and an average around -8°C (18°F), while June experiences milder conditions, beginning at a minimum of -3°C (27°F) and peaking at a maximum of 25°C (77°F). Precipitation is more abundant in December, totaling 165 mm (6.5 in) over 17 days, compared to June's 104 mm (4.1 in) across 18 days. Additionally, humidity levels are higher in December at 90%, while June enjoys a more comfortable 75%. For a closer look at June's weather specifics, visit Aosta weather in June.
In December, the weather is notably frigid, with temperatures dipping as low as -23°C (-9°F) and averaging around -8°C (18°F). This colder month also experiences high humidity at 90% and significant precipitation of 165 mm (6.5 in) spread over 17 days. In contrast, July brings a vibrant change, showcasing milder temperatures that range from a minimum of 1°C (34°F) to a pleasant maximum of 25°C (76°F), with an average of 12°C (55°F). Precipitation is lower at 98 mm (3.9 in) for 16 days, and humidity decreases to 72%. For more details on the July weather, check out Aosta weather in July.
December and August present a stark contrast in weather patterns. In December, temperatures plunge to a minimum of -23°C (-9°F) with an average of -8°C (18°F) and a maximum that reaches only 4°C (39°F). The month sees significant precipitation, totaling 165 mm (6.5 in) over 17 rainy days, coupled with high humidity at 90%. Conversely, August boasts much milder temperatures, with a minimum of 0°C (33°F), an average of 12°C (54°F), and a pleasant maximum of 23°C (74°F). While it experiences less precipitation at 101 mm (4.0 in) over 14 days, the humidity is notably lower at 63%. For those interested in the vibrant summer atmosphere, Aosta weather in August provides further insights into this season.
December and September present starkly different weather conditions. In December, temperatures plunge to a minimum of -23°C (-9°F), with an average of -8°C (18°F) and a maximum of 4°C (39°F), creating a bitterly cold atmosphere. The month also experiences significant precipitation, with 165 mm (6.5 in) falling over 17 days and humidity levels reaching a chilly 90%. In contrast, September offers a milder experience, with temperatures ranging from a minimum of -7°C (20°F) to a maximum of 20°C (68°F) and an average of 8°C (47°F). Precipitation is lighter at 64 mm (2.5 in) over 14 days, accompanied by a lower humidity of 73%. For more specifics about September weather in Aosta, you can check this link: Aosta weather in September.
In December, the weather takes a notable turn, with temperatures dropping significantly, ranging from a chilling minimum of -23°C (-9°F) to a maximum of just 4°C (39°F) and an average of -8°C (18°F). The month also experiences considerable precipitation, averaging 165 mm (6.5 in) over 17 days, paired with high humidity levels of around 90%. In contrast, October presents milder conditions, with temperatures fluctuating between a minimum of -8°C (17°F) and a maximum of 15°C (60°F), averaging 4°C (39°F). While October sees slightly lower precipitation at 124 mm (4.9 in) over 13 days, the humidity remains quite high at 89%. For more detailed information on October weather, you can visit Aosta weather in October.
In December, the weather is notably colder compared to November, with average temperatures dropping from -3°C (27°F) in November to -8°C (18°F) in December. The maximum temperature in December is also lower, peaking at just 4°C (39°F), while in November it can reach up to 12°C (54°F). Additionally, December experiences more precipitation, totaling 165 mm (6.5 in) over 17 days, compared to November's 117 mm (4.6 in) over 15 days. Both months share high humidity levels at 90%, but the overall chill in December sets it apart from the milder conditions of November. For a detailed overview of November's weather patterns, you can refer to Aosta weather in November.
As December settles in, Aosta transforms into a winter wonderland, showcasing a stark contrast to the milder months that precede it. With temperatures dropping significantly, the region experiences chilly days and even colder nights, creating the perfect backdrop for festive activities and snow sports. Precipitation is notably high this month, often blanketing the landscape in a thick layer of snow, while humidity remains at a brisk 90%, adding to the crisp atmosphere. For those seeking a blend of holiday charm and winter adventure, December in Aosta is truly a unique experience. For more details on the city's climate throughout the year, visit Aosta Climate.