Last updated: March 24, 2025
Aosta, Italy, in January, experiences a chilly embrace with temperatures ranging from a minimum of -25°C (-13°F) to a maximum of 4°C (39°F), averaging around -9°C (16°F). This month sees about 114 mm (4.5 in) of precipitation spread across 10 days, resulting in a notably humid environment with levels reaching 91%. Wrapped in the serene beauty of winter, Aosta invites visitors to appreciate its enchanting landscapes while bracing for the crisp, brisk air that defines this picturesque alpine destination.
In January, Aosta, Italy, experiences a chilly embrace, with temperatures ranging from a brisk -25°C (-13°F) at their lowest to a modest 4°C (39°F) at their peak, creating an average of -9°C (16°F). This month typically showcases the stark winter landscape, setting the stage for the heavy snows that blanket the region in a glorious white. As winter progresses into February, temperatures gradually rise a bit, suggesting a subtle shift as the minimum dips to -22°C (-7°F) while the maximum edges up to 8°C (47°F). This warming trend continues into March, where the average creeps closer to freezing, hinting at the impending arrival of spring. Overall, January's cold holds firm, laying the groundwork for Aosta's transformative seasonal dance from winter’s chill to the fresh beginnings of spring.
In January, Aosta experiences a notable amount of precipitation, with an average of 114 mm (4.5 in) falling over approximately 10 days. This marks the beginning of a wetter season, as the year transitions into the typically rainier months. The precipitation not only sets the stage for the enchanting winter landscape but also prepares the ground for the refreshing bursts of rainfall that follow in May, where totals peak at 144 mm (5.7 in) on about 20 days. Interestingly, the trend suggests that while January is significant, it’s quickly followed by a damp February and March, leading into a gradation of rainfall that culminates in a more varied spring climate. As the cold grips the region, these showers gradually decrease, reflecting a cyclical shift that adds both beauty and life to Aosta’s vibrant ecosystem.
January in Aosta, Italy, is characterized by a high humidity level of 91%, making it one of the most moisture-rich months of the year. This elevated humidity not only sets a chilly tone but also marks the beginning of a gradual decline, as February sees a drop to 87%. The trend continues through the spring, with humidity levels easing to 84% in March and reaching 83% in April. As the warmer months approach, the air becomes noticeably drier, with June and July experiencing comfortable levels of 75% and 72%, respectively. Interestingly, humidity makes a comeback in the fall, peaking again in October and November at 89% and 90%, before rounding out the year with December maintaining that same moisture-rich atmosphere. Overall, Aosta's humidity presents a fascinating ebb and flow, deeply influencing the region's climate and experience throughout the year.
In Aosta, Italy, January ushers in a UV Index of 3, placing it in the moderate exposure category with a burn time of 30 minutes. As winter progresses into February, the UV Index rises to 5, maintaining the same moderate exposure but signaling the gradual strength of the sun. This trend escalates dramatically in March, where the index jumps to 8, categorized as very high, reducing the burn time to just 15 minutes. This increase continues through April and May, reaching its peak in June and July with an extreme index of 11 and a mere 10 minutes before skin damage occurs. As summer wanes, the UV levels start to drop, illustrating the inverse relationship between the season and sun exposure, with a significant decrease by October's 6 and December’s low of 2. Such variations highlight the importance of sun safety year-round. For more details, visit Aosta UV Index.
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In January, Aosta, Italy enjoys a modest 180 hours of sunshine, setting the stage for a gradual brightening as winter gives way to spring. By February, sunshine increases to 240 hours, hinting at the warmth to come. As the months progress, the hours continue to climb, with March welcoming 309 hours and April further brightening the days with 340 hours. The trend peaks in the summer months, where July basks in a radiant 424 hours of glorious sunshine. However, as fall approaches, sunshine hours begin to wane, dropping to 329 hours in September and continuing to decline into winter, with December closing the year at 212 hours. This pattern showcases Aosta's vibrant seasonal transitions, where each month unfolds a new chapter of light and warmth.
In Aosta, Italy, January is characterized by a modest 23% chance of sunny weather, making it one of the cloudier months of the year. As winter transitions into spring, the likelihood of sunshine begins to rise significantly, peaking at 38% in February and 47% in March, which signals a gradual shift towards more favorable conditions. This upward trend continues into April before slightly dipping to 31% in May. Interestingly, while summer months like July and August show varying chances of sunshine, 47% in August aligns closely with the peak of spring. The seasonal variability illustrates the region's evolving weather patterns, encouraging visitors to explore while keeping an umbrella handy in January.
In Aosta, Italy, January marks the beginning of the year with approximately 9 hours of daylight, gradually giving way to longer days as winter transitions into spring. By February, daylight increases to 10 hours, foreshadowing the 11 hours that arrive in March. As the days lengthen, April delights with 13 hours, and May shines brightly with 14 hours of sunlight, leading into the peak of summer in June and July, where daylight lasts an impressive 15 hours. After this summer zenith, the days start to shorten, with August continuing to offer 14 hours before the descent to 12 hours in September, then back to 10 hours in October. As winter encroaches once again, November brings a return to 9 hours, and December concludes the year with a mere 8 hours of daylight. This rhythmic ebb and flow of daylight creates a captivating seasonal tapestry, highlighting the interplay between light and shadow in this picturesque region.
In January, the winds of Aosta, Italy whisper gently, averaging a mild 1.6 m/s (4 mph), marking the peak of winter's breath. This light breeze serves as a precursor to the calm that follows, as February and March see a slight decrease, settling at 1.4 m/s (3 mph) and 1.3 m/s (3 mph), respectively. As spring approaches, wind speeds gradually soften, hitting a low of 1.1 m/s (2 mph) in June, before picking up again later in the summer months. By the time autumn arrives, the wind maintains a gentle consistency around 1.3 m/s (3 mph), creating a serene atmosphere throughout Aosta. Overall, January's breezy charm is a quintessential reminder of the seasonal transitions in this picturesque Italian valley.
The weather in Aosta changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January'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.
January and February display contrasting yet similarly chilly weather patterns. In January, average temperatures hover around -9°C (16°F), with a minimum plunging to -25°C (-13°F) and a maximum reaching just 4°C (39°F). The month sees a significant amount of precipitation at 114 mm (4.5 in) over 10 days, with a high humidity level of 91%. In comparison, February experiences slightly milder temperatures, with an average of -6°C (22°F), a minimum of -22°C (-7°F), and a maximum of 8°C (47°F). Precipitation is less pronounced, totaling 79 mm (3.1 in) over 12 days, and humidity drops to 87%. For more specific details about February weather in Aosta, you can visit Aosta weather in February.
In January, the weather is considerably colder, with average temperatures hovering around -9°C (16°F), while March sees a notable rise with average temperatures reaching -4°C (25°F). January experiences maximum temperatures only slightly above freezing at 4°C (39°F), compared to March, where highs can reach a more comfortable 10°C (50°F). Additionally, January is characterized by higher humidity at 91%, but March offers a bit of relief with humidity dropping to 84%. Precipitation is quite similar between the two months, with January receiving 114 mm (4.5 in) over 10 days and March slightly less at 106 mm (4.2 in) over 15 days. For more specifics on March weather, you can visit Aosta weather in March.
In January, the weather is typically harsh, with temperatures plummeting as low as -25°C (-13°F) and averaging around -9°C (16°F). There’s a significant amount of precipitation, measuring 114 mm (4.5 in) over around 10 days, paired with high humidity levels of 91%. In contrast, April heralds the arrival of milder conditions, with temperatures ranging from a minimum of -16°C (4°F) to a maximum of 12°C (54°F) and an average of 0°C (32°F). Although April experiences 11 days of precipitation, the total is lower at 83 mm (3.3 in), and humidity decreases to 83%. For a more detailed look at what to expect, check out Aosta weather in April.
January and May present stark contrasts in weather conditions. In January, temperatures can plummet to a minimum of -25°C (-13°F), with an average around -9°C (16°F) and a maximum of only 4°C (39°F). This month experiences significant precipitation, totaling 114 mm (4.5 in) over about 10 days, contributing to a high humidity level of 91%. In contrast, May brings a milder climate, with minimum temperatures around -12°C (11°F) and an average of 4°C (40°F), peaking at 18°C (65°F). Although May receives more precipitation at 144 mm (5.7 in) across approximately 20 days, the humidity drops to a more comfortable 78%. For more detailed insights into May weather, you can refer to Aosta weather in May.
In January, the weather is harsh and frigid, with temperatures ranging from a chilling -25°C (-13°F) to a maximum of just 4°C (39°F), and an average of -9°C (16°F). The high humidity of 91% combined with 114 mm of precipitation over 10 days creates a wintry atmosphere. In stark contrast, June brings milder conditions, with temperatures varying from a low of -3°C (27°F) to a warm high of 25°C (77°F) and an average temperature of 10°C (50°F). The precipitation is slightly lower at 104 mm (4.1 in) spread over 18 days, accompanied by a drop in humidity to 75%. For more details on June weather, check out Aosta weather in June.
January and July in Aosta present stark contrasts in weather. In January, temperatures can plummet as low as -25°C (-13°F) with an average of -9°C (16°F) and even maxing out at just 4°C (39°F). This frigid month sees significant precipitation of 114 mm (4.5 in), spread over about 10 days, while humidity levels remain high at 91%. In comparison, July offers a much milder climate with minimum temperatures around 1°C (34°F), an average of 12°C (55°F), and peaks at a comfortable 25°C (76°F). Although July features slightly lower precipitation at 98 mm (3.9 in) over 16 days, humidity drops to a more pleasant 72%. To explore more about Aosta's July weather, visit Aosta weather in July.
In January, Aosta experiences frigid temperatures, with a minimum of -25°C (-13°F) and an average low of -9°C (16°F), making it one of the coldest months of the year. Precipitation is relatively high at 114 mm (4.5 in) over 10 days, accompanied by a considerable humidity of 91%, adding to the winter chill. In contrast, August brings a much milder climate, where temperatures range from a minimum of 0°C (33°F) to a maximum of 23°C (74°F) and an average of 12°C (54°F). Although precipitation is slightly lower at 101 mm (4.0 in) over 14 days, the humidity drops to 63%, making August feel far more comfortable. For a detailed look at Aosta’s summer conditions, you can check Aosta weather in August.
January and September present starkly contrasting weather conditions. In January, the temperatures plunge to a minimum of -25°C (-13°F) and average around -9°C (16°F), with a maximum of 4°C (39°F), all coupled with high humidity levels of 91%. This winter month also sees significant precipitation, totaling 114 mm (4.5 in) over approximately 10 days. In contrast, September enjoys a milder climate, with temperatures ranging from a minimum of -7°C (20°F) to a comfortable maximum of 20°C (68°F) and an average of 8°C (47°F). Although September experiences rainfall on 14 days, it accumulates only 64 mm (2.5 in), and the humidity drops to 73%. For more detailed insights, check out Aosta weather in September.
In January, temperatures plummet to a minimum of -25°C (-13°F), with an average of -9°C (16°F) and a maximum of just 4°C (39°F), making it the coldest month of the year. The precipitation is substantial, with 114 mm (4.5 in) over approximately 10 days, accompanied by high humidity at 91%. In contrast, October presents a much milder climate, featuring a minimum temperature of -8°C (17°F), an average of 4°C (39°F), and a maximum of 15°C (60°F). While October sees slightly more precipitation at 124 mm (4.9 in) over 13 days, the humidity remains just a bit lower at 89%. For a detailed look at Aosta's weather during this month, visit Aosta weather in October.
In January, temperatures dip significantly lower than in November, with a minimum of -25°C (-13°F) compared to November's minimum of -23°C (-9°F). The average temperature in January is a brisk -9°C (16°F), while November sees a milder average of -3°C (27°F). Additionally, January experiences a maximum of only 4°C (39°F), whereas November can reach up to 12°C (54°F). When it comes to precipitation, January brings 114 mm (4.5 in) over 10 days, slightly less than November's 117 mm (4.6 in) spread across 15 days. Humidity levels in January are a bit higher at 91%, compared to November’s 90%. For a more detailed look at November's climate, you can visit Aosta weather in November.
January and December showcase a strikingly cold winter atmosphere, with January experiencing slightly lower average temperatures than December. In January, the minimum temperature can drop to -25°C (-13°F), while December sees a minimum of -23°C (-9°F). Both months have a maximum temperature of 4°C (39°F). January is characterized by less precipitation at 114 mm (4.5 in) compared to December's 165 mm (6.5 in), though it still sees considerable humidity at 91%. While January has precipitation on about 10 days, December is wetter, with rainfall or snowfall occurring on 17 days. For those curious about specifics, you can explore more about the weather patterns in Aosta weather in December.
January in Aosta presents a striking contrast to other months, characterized by its bitterly cold temperatures that often plunge below freezing. The elevated humidity levels, often reaching 91%, coupled with cumulative precipitation of 114 mm over about ten days, transform the landscape into a winter wonderland. This stark chill makes January a unique time to experience Aosta's beauty, as the average temperature hovers around a frosty -9°C. For those seeking to understand the broader climatic patterns, a visit to Aosta Climate provides further insights into how this month stands apart from the milder conditions of spring and autumn.