Last updated: August 27, 2025
December in Ascona, Switzerland, brings a crisp chill as temperatures hover between a maximum of 9°C (49°F) and a minimum of -13°C (10°F), with an average temperature of around -1°C (31°F). This month is characterized by high humidity levels of 90% and frequent precipitation, totaling 119 mm (4.7 in) over approximately 12 days. Ascona's winter charm is accentuated by its picturesque landscapes, making it an enchanting destination for those who appreciate serene, frosty atmospheres and the beauty of seasonal transformation.
In December, Ascona, Switzerland, welcomes the winter season with chilly temperatures, where the mercury dips to a minimum of -13°C (10°F) and hovers around an average of -1°C (31°F). This month acts as a transition into the heart of winter, with daytime highs reaching up to 9°C (49°F). Following the trends observed in previous months, December's colder climate sets a stark contrast to the milder conditions of autumn—November saw an average of 3°C (38°F). As days grow shorter and frost descends, Ascona transforms into a picturesque winter wonderland, inviting visitors to embrace the beauty and serenity of the season.
In December, Ascona experiences a noteworthy precipitation total of 119 mm (4.7 in), with rain falling on around 12 days throughout the month. This level of rainfall is consistent with the pattern observed during the preceding months, particularly October and November, which also saw significant precipitation, with figures of 242 mm and 168 mm respectively. However, December's rainfall is markedly lower than the peaks of spring and summer, indicating a gradual easing of the wettest conditions. The trend shows that while December remains a damp month, the overall precipitation begins to settle down as the region transitions into winter, setting the stage for the colder, drier months ahead.
In Ascona, Switzerland, December brings a notable increase in humidity, aligning closely with the year's highest levels experienced in January and October, both at 90%. This tendency reflects a noticeable trend as autumn transitions into winter, with humidity levels peaking during these colder months. The annual cycle showcases fluctuating patterns, starting from a comfortable 84% in April down to a brisk 80% in May and August, but as the year draws to a close, residents can expect a return to the dampness typical of winter. With December's humidity steadying at 90%, Ascona embraces a season of restful coziness, where the crisp air complements the lush greenery still visible in its surroundings.
In December, Ascona experiences a low UV Index of 2, signaling a welcome respite from the intense sun exposure of the preceding months. With a burn time of 45 minutes, it's a great time for outdoor activities without the usual high-risk concerns. As the year transitions from the blistering summer highs—where the UV Index soared to 10 in June and July—the end of the year brings a noticeable decline in UV radiation. It's fascinating to observe this seasonal fluctuation, where March begins with a high index of 6, shifting to the more cautious moderate levels in October and November. For more information on UV levels in this picturesque region, explore Ascona UV Index.
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In Ascona, Switzerland, December ushers in a modest 193 hours of sunshine, marking a subtle dip as winter settles in. This drop follows the radiant highs of summer, where July dazzles with 404 hours of light, making it the sunniest month of the year. As the seasons transition, light gradually wanes, descending from the peak brightness of June through vibrant autumn colors; by November, the hours dwindle to 194. Yet, even as daylight decreases in December, the charm of Ascona remains, capturing the spirit of the Swiss winter with its tranquil lakeside vistas and picturesque landscapes, ensuring that visitors can still bask in the beauty of the sun, albeit in more limited measure.
In Ascona, Switzerland, December brings a moderate chance of sunny weather, with the probability of sun reaching 46%. This figure aligns closely with the preceding months of November and April, both hovering around the mid-40s, suggesting a relatively consistent pattern as winter sets in. While the sunny days might be less frequent than in the spring and summer months, they provide a delightful contrast to the colder, cloudier days typical of the season. Overall, December offers a refreshing glimpse of sunshine, making it an appealing month for visitors seeking both winter activities and the occasional sunlit stroll by the lake.
In Ascona, Switzerland, December marks the transition into the winter months, bringing a significant decrease in daylight that culminates in just 8 hours of sunlight. This decline is part of a broader trend observed throughout the year, where daylight gradually increases from 9 hours in January to a peak of 15 hours in June and July. Following the summer's abundance of light, the days begin to shorten again, dropping to 14 hours in August and tapering off as autumn sets in. By the time December arrives, the daylight hours are at their lowest, leaving behind a striking contrast to the vibrant, sun-drenched days of mid-year. The cyclical pattern of daylight in Ascona beautifully illustrates the rhythm of the seasons, from the long, luminous days of summer to the cozy, dim evenings of winter.
As December sweeps into Ascona, Switzerland, it brings a noticeable shift in the average wind speed, which reaches 2.0 m/s (5 mph), the highest of the year. This increase from the modest gusts of previous months highlights a trend where the wind gradually picks up as winter approaches. While the earlier months, particularly February and June, see gentle breezes averaging around 1.2 m/s (3 mph), December's brisk winds invigorate the landscape, creating a refreshing atmosphere that contrasts beautifully with the serene winter scenery. As the year winds down, the refreshing chill of these December winds can invigorate your senses as you stroll along the picturesque shores of Lake Maggiore.
Weather in Ascona varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ascona, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, temperatures typically range from a minimum of -13°C (10°F) to a maximum of 9°C (49°F), with an average of -1°C (31°F). The month is characterized by higher precipitation, averaging 119 mm (4.7 in) over 12 days, and a humidity level of 90%. In contrast, January experiences slightly colder temperatures, with a minimum of -16°C (4°F) and an average of -2°C (29°F), but the maximum remains the same at 9°C (49°F). Precipitation decreases to 71 mm (2.8 in) over 10 days, and the humidity rises to 92%. For more detailed information on January weather, you can visit Ascona weather in January.
December and February present notable contrasts in weather patterns. In December, temperatures range from a minimum of -13°C (10°F) to a maximum of 9°C (49°F), with an average temperature of -1°C (31°F). The month sees considerable precipitation, totaling 119 mm (4.7 in) over about 12 days, accompanied by high humidity at 90%. In comparison, February experiences slightly colder temperatures, with a minimum of -17°C (2°F) and a maximum of 17°C (63°F), leading to an average of 1°C (34°F). Precipitation is significantly reduced to 56 mm (2.2 in) over 11 days, while humidity remains relatively stable at 89%. For more details on February weather, check out Ascona weather in February.
In December, temperatures generally hover between a chilly -13°C (10°F) and a maximum of 9°C (49°F), creating a cold and damp atmosphere with an average of -1°C (31°F). The month sees a significant amount of precipitation at 119 mm (4.7 in) over about 12 days, coupled with high humidity levels of 90%. In contrast, March experiences milder weather, with temperatures ranging from a minimum of -17°C (3°F) to a comfortable maximum of 18°C (64°F), averaging around 3°C (37°F). Although the precipitation is slightly lower at 106 mm (4.2 in) over the same number of days, the humidity remains relatively high at 87%. For those interested in more specifics, Ascona weather in March provides detailed insights into the conditions during that month.
In December, temperatures are notably colder, with a minimum of -13°C (10°F) and an average of -1°C (31°F), while April offers a more moderate climate, featuring a minimum temperature of -6°C (21°F) and an average of 7°C (44°F). The maximum temperature in December reaches only 9°C (49°F), compared to April's pleasant highs of 20°C (68°F). Precipitation levels are similar, with December receiving 119 mm (4.7 in) over 12 days and April experiencing slightly more at 136 mm (5.3 in) over just 10 days. Humidity is also higher in December at 90%, whereas April sees a lower humidity level of 84%. For a detailed look at April weather in Ascona, you can check Ascona weather in April.
December and May present strikingly different weather patterns. In December, temperatures typically range from a frosty -13°C (10°F) to a brisk 9°C (49°F), with an average of -1°C (31°F). The month sees considerable precipitation, with 119 mm (4.7 in) raining down over 12 days and high humidity levels at 90%. In contrast, May offers a warmer climate with temperatures spanning from a chilly -7°C (21°F) to a pleasant 25°C (77°F), averaging around 11°C (51°F). This month experiences even higher precipitation at 176 mm (6.9 in) over 19 days, though humidity is slightly lower at 80%. For those interested in a deeper dive into May’s weather specifics, you can explore Ascona weather in May.
December and June present strikingly contrasting weather conditions. In December, temperatures can plunge as low as -13°C (10°F), with an average of -1°C (31°F) and a maximum of 9°C (49°F). This month experiences significant precipitation, averaging 119 mm (4.7 in) over 12 days, while humidity levels remain high at 90%. Conversely, June ushers in milder weather with minimum temperatures around 5°C (41°F) and an average of 15°C (60°F), peaking at 34°C (93°F). Though it sees a higher total precipitation of 159 mm (6.3 in) across 18 days, the humidity is slightly lower at 82%. For a closer look at the conditions in June, you can explore Ascona weather in June.
In December, temperatures can drop significantly, with lows reaching -13°C (10°F) and average highs around 9°C (49°F), making it a chilly month overall. The precipitation during this time totals 119 mm (4.7 in), occurring over 12 days, accompanied by high humidity at 90%. In contrast, July experiences much milder weather, with temperatures ranging from a minimum of 6°C (44°F) to an average of 17°C (63°F) and maximums peaking at 27°C (80°F). The month sees slightly more precipitation at 123 mm (4.9 in), but it spreads over 18 days, with humidity levels a bit lower at 83%. For a more detailed look at what to expect, check out Ascona weather in July.
December and August present stark contrasts in weather. In December, temperatures can plunge to a chilly -13°C (10°F) at night, with average temperatures hovering around -1°C (31°F) and reaching a maximum of 9°C (49°F). The month experiences significant precipitation, totaling 119 mm (4.7 in) spread over 12 days, paired with high humidity at 90%. In sharp contrast, August boasts much milder temperatures, with nighttime lows of 7°C (45°F), average highs around 17°C (62°F), and maximums soaring to 28°C (82°F). Precipitation in August is slightly higher at 169 mm (6.6 in) over 13 days, but the humidity is lower at 80%. For a deeper look at what to expect weather-wise, check out Ascona weather in August.
December and September present contrasting weather patterns. In December, temperatures range from a chilly -13°C (10°F) at night to a mild 9°C (49°F) during the day, with an average of -1°C (31°F). The month experiences significant precipitation, with around 119 mm (4.7 in) falling over about 12 days, and humidity levels are quite high at 90%. In contrast, September boasts a much warmer climate, with temperatures varying from a low of -1°C (31°F) to a pleasant high of 23°C (74°F), averaging at a comfortable 13°C (55°F). While September has slightly higher precipitation at 136 mm (5.4 in) over approximately 14 days, it maintains a lower humidity level of 83%. For more details about this month, check out Ascona weather in September.
In December, temperatures drop significantly, with a minimum of -13°C (10°F) and an average of -1°C (31°F), while the maximum reaches only 9°C (49°F). In stark contrast, October boasts milder conditions, featuring a minimum of -1°C (30°F), an average of 8°C (47°F), and a pleasant maximum of 21°C (69°F). Although both months experience 12 days of precipitation, October sees a much higher total at 242 mm (9.5 in) compared to December's 119 mm (4.7 in). The humidity remains consistent at 90% for both months, adding a damp chill to December's colder temperatures. For more detailed insights into October's climate, you can check Ascona weather in October.
In comparing the weather between December and November, December is significantly colder, with average temperatures hovering around -1°C (31°F), compared to November's milder average of 3°C (38°F). December also experiences a wider temperature range, with lows dropping as low as -13°C (10°F) and highs reaching only up to 9°C (49°F), while November sees temperatures ranging from -9°C (16°F) to 15°C (59°F). Furthermore, November has slightly more precipitation, totaling 168 mm (6.6 in) over 13 days, in contrast to December's 119 mm (4.7 in) across 12 days. Both months are characterized by high humidity levels, with December at 90% and November at 88%. For more detailed insights on November weather in Ascona, you can explore Ascona weather in November.
As December settles over Ascona, the weather transforms dramatically, offering a stark contrast to the milder months that precede it. With a notable drop in temperatures and increased precipitation, this month is characterized by chilling highs around 9°C and lows plunging to -13°C. The landscape often becomes cloaked in a blanket of humidity, reaching 90%, enhancing the occasional drizzle that accumulates to 119 mm over approximately half the month. Unlike the warmer seasons, when sunshine predominates, December wraps the town in a cooler, damp embrace, ideal for cozy indoor pursuits. For those seeking comprehensive details on Ascona's climatic conditions, be sure to check Ascona Climate.