December Weather in Locarno, Switzerland

Last updated: August 27, 2025

December in Locarno, Switzerland is a month marked by crisp temperatures and considerable precipitation. With maximum highs reaching up to 9°C (49°F) and average lows dipping to -1°C (31°F), the weather exhibits a striking range, culminating in minimum temperatures that plunge to -13°C (10°F). The month sees approximately 119 mm (4.7 in) of rainfall over about 12 days, creating a damp atmosphere with humidity levels around 90%. This combination of chilly weather and frequent rain sets the stage for a picturesque winter landscape, making December an enchanting, albeit brisk, time to explore Locarno's scenic beauty.

December Temperature in Locarno

In December, Locarno, Switzerland, bids farewell to the lingering warmth of autumn, ushering in a chill that wraps the town in a serene winter blanket. With temperatures ranging from a brisk -13°C (10°F) at night to a modest 9°C (49°F) during the day, the average settles around a frosty -1°C (31°F). This month's cooler temperatures continue a trend seen in previous months, where the mercury consistently dips lower as the year draws to a close, transitioning from the milder autumn averages to the harsher winter climate. As Locarno prepares for the festive season, the crisp air invites both locals and visitors to embrace the charm of its holiday lights, making it a magical destination amidst the chill.

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

The chart illustrates December temperature patterns in Locarno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Locarno, 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).
JanFebMarAprMayJunJulAugSepOctNovDec293337445160626255473731
Data source: Temperature data for Locarno 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 Locarno

In December, Locarno, Switzerland, experiences a notable shift in its precipitation patterns, receiving an average of 119 mm (4.7 in) of rainfall over 12 days. This marks a decrease from the wetter months preceding it, particularly October, which boasts a significant 242 mm (9.5 in). While December still captures the essence of winter with its steady rainfall, it signifies a transition towards drier days as the year draws to a close. The combination of autumn’s lingering moisture and the cooling temperatures creates a unique atmosphere, shaping the picturesque landscape as the town prepares for the festive season.

December Precipitation Trends in Locarno

The chart displays monthly precipitation patterns in Locarno, 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 Locarno, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec7156106136176159124169136242168119
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Locarno

In Locarno, Switzerland, December ushers in a season of elevated moisture, with humidity levels hovering around 90%. This marks a slight increase compared to the preceding months, aligning with the trend observed throughout late autumn, where humidity regularly approached or exceeded 88%. Interestingly, while humidity generally decreases from the late spring months, it tends to spike again towards the end of the year. As we transition from November into December, locals can expect a damp chill in the air, reminiscent of the moist conditions that define this picturesque lakeside town during the colder months. Overall, December's humidity reflects a consistent pattern of seasonal change, reminding us of the lushness that characterizes Locarno even in winter.

December Average Humidity in Locarno

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

In December, Locarno, Switzerland experiences a UV Index of 2, categorizing it under the low exposure category. This signifies a welcome respite from the high levels of UV radiation seen in the summer months, where indices soared to 10 in June and July. As the year rounds off, sun exposure becomes safer, with a recommended burn time of 45 minutes before sunscreen is necessary. This trend reflects a significant decrease in UV intensity as the colder months approach, offering residents and visitors alike a chance to enjoy the outdoors without the same caution required during the peak summer days. For more details on UV levels throughout the year, check out Locarno UV Index.

Maximum UV Index Levels in Locarno for December

The chart shows the monthly maximum UV Index (UVI) for Locarno 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 Locarno typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101097532
Data source: Locarno 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 Locarno

In December, Locarno bids farewell to the year with a gentle embrace of 193 hours of sunshine, a slight decline from the previous month. This seasonal shift serves as a reminder of the cozy winter atmosphere setting in after Autumn's golden hues. As days grow shorter, sunlight hours dwindle from their peak in June, where the town basks in 379 hours of gleaming rays. Interestingly, while the month is one of the year's darkest, it's not without its charm; December's sunlight often dances off the pristine snow-capped mountains, creating a shimmering spectacle that captures the heart of any visitor. As the year transitions into winter, Locarno remains an enchanting spot, blending its rich cultural heritage with the serene beauty of the surrounding landscapes, making every sun-dappled moment truly special.

Monthly Sunshine Duration in Locarno: December Highlighted

The December sunshine duration represents the total number of hours Locarno 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.
JanFebMarAprMayJunJulAugSepOctNovDec174h225h301h330h350h379h404h362h302h265h194h193h
Data source: Locarno December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Locarno During December

In December, Locarno, Switzerland, experiences a 46% chance of sunny weather, indicating a promising potential for clear skies as the year winds down. This likelihood is consistent with a slight upward trend observed from the previous months, where November held at 40% and October achieved 44%. Interestingly, December's ratio positions it favorably compared to the earlier winter months, suggesting that while the chances of sunshine are moderate, they are relatively stable and better than the often dreary weeks preceding it. As the region braves the winter chill, residents and visitors alike can look forward to pockets of sunshine amid the seasonal contrast.

Percentage of Sunny Days in December in Locarno

The chart illustrates the percentage of sunny days in Locarno 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 Locarno experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec31%40%58%46%38%33%37%50%35%44%40%46%
Data source: Locarno December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Locarno in December

In Locarno, Switzerland, the rhythm of daylight ebbs and flows throughout the year, with December marking a noticeable low as the sun graces the sky for only 8 hours. This decline follows a gentle ascent from the 11 hours of daylight seen in March, gradually peaking at 15 hours in the summer months of June and July. As the days grow shorter, the transition from November's 9 hours to December's brevity signals the approach of winter, casting longer shadows and ushering in cozy evenings. The gradual decrease in daylight serves as a reminder of nature's cycles, inviting residents and visitors alike to embrace the beauty of winter's embrace in this picturesque Swiss town.

Average Daylight Hours in Locarno for December

The chart illustrates the variation in daylight duration in Locarno throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 4m10h 20m11h 56m13h 34m14h 58m15h 41m15h 18m14h 4m12h 29m10h 52m9h 25m8h 40m
Data source: Locarno daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Locarno

In December, Locarno experiences a noticeable increase in average wind speed, reaching 2.0 m/s (5 mph), which marks a shift from the generally calm and gentle breezes of earlier months. This brisk wind stands out against the backdrop of the preceding winter months, where speeds hovered around 1.2 to 1.7 m/s. As the year draws to a close, December's winds bring a refreshing chill, making it a time for locals and visitors alike to embrace the crisp ambiance of Lake Maggiore's shores. This seasonal transition highlights a subtle yet distinct uptick in wind activity, inviting the community to enjoy festive outdoor gatherings under the ever-changing Swiss sky.

Average December Wind Speed in Locarno

The chart displays monthly wind speed patterns in Locarno, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.71.21.41.31.41.21.31.31.21.41.62.0 m/s
Data source: Locarno December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Locarno Compares to Other Months

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

In December, temperatures in the region 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 experiences significant precipitation, totaling 119 mm (4.7 in) over 12 days, along with a humidity level of around 90%. In contrast, January sees slightly colder conditions, with temperatures dropping to a minimum of -16°C (4°F) and maintaining the same maximum of 9°C (49°F) as December, while the average temperature is slightly lower at -2°C (29°F). Precipitation decreases to 71 mm (2.8 in) over 10 days, and humidity rises to 92%. For more detailed information, you can check Locarno weather in January.

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 around -1°C (31°F). This month also experiences a significant amount of precipitation, totaling 119 mm (4.7 in) over 12 days, and a high humidity level of 90%. In contrast, February sees a slightly colder minimum of -17°C (2°F) and a higher maximum of 17°C (63°F), resulting in an average temperature of 1°C (34°F). Precipitation decreases to 56 mm (2.2 in) over 11 days, with humidity remaining relatively stable at 89%. For a more detailed look at February weather, you can visit Locarno weather in February.

In December, temperatures in Locarno can drop as low as -13°C (10°F), with an average around -1°C (31°F) and a maximum reaching 9°C (49°F). The month experiences significant precipitation, totaling 119 mm (4.7 in) over 12 days, while humidity remains high at 90%. In contrast, March sees a slight rise in average temperature to 3°C (37°F) and maximums that can reach up to 18°C (64°F), although minimums can dip to -17°C (3°F). Precipitation is slightly lower at 106 mm (4.2 in) over the same number of days, and humidity decreases slightly to 87%. For a detailed look at conditions during this transition from winter to spring, check out Locarno weather in March.

December and April present contrasting weather conditions. In December, temperatures dip significantly, with a minimum of -13°C (10°F) and an average of -1°C (31°F), while maximums reach only 9°C (49°F). The month is characterized by high humidity at 90% and considerable precipitation of 119 mm (4.7 in) over 12 days. In contrast, April brings a notable warming trend, with minimum temperatures of -6°C (21°F) and an average of 7°C (44°F), peaking at a refreshing 20°C (68°F). Although April sees slightly higher precipitation at 136 mm (5.3 in) over fewer days (10), the humidity drops to 84%. To learn more about the specifics of April weather in the region, visit Locarno weather in April.

December and May present starkly different weather conditions. In December, temperatures can dip as low as -13°C (10°F), with an average around -1°C (31°F) and a maximum of 9°C (49°F). The month sees significant precipitation of 119 mm (4.7 in) over approximately 12 days, coupled with high humidity at 90%. In contrast, May ushers in milder temperatures, starting from a minimum of -7°C (21°F), rising to an average of 11°C (51°F), and reaching a maximum of 25°C (77°F). Precipitation increases to 176 mm (6.9 in) over about 19 days, but humidity drops to 80%. For a more detailed look at May weather specifics, you can check out Locarno weather in May.

December and June present two starkly different weather patterns. In December, temperatures can plunge as low as -13°C (10°F), with an average of around -1°C (31°F) and a pleasant maximum of 9°C (49°F). This month sees significant precipitation, totaling 119 mm (4.7 in), over approximately 12 days, coupled with high humidity levels of 90%. In contrast, June enjoys milder conditions with a minimum temperature of 5°C (41°F), an average of 15°C (60°F), and peaks that can reach as high as 34°C (93°F). Although June has more precipitation at 159 mm (6.3 in) across 18 days, the humidity is slightly lower at 82%, making it feel more comfortable overall. For more detailed insights into the June weather, you can check Locarno weather in June.

In December, the weather is significantly colder, with temperatures ranging from a chilly -13°C (10°F) to a maximum of 9°C (49°F), creating an average temperature of -1°C (31°F). The month sees about 119 mm (4.7 in) of precipitation over 12 days, accompanied by a high humidity level of 90%. In contrast, July experiences much warmer conditions, with temperatures varying from a minimum of 6°C (44°F) to a pleasant maximum of 27°C (80°F), leading to an average temperature of 17°C (63°F). Interestingly, July has a similar amount of precipitation at 123 mm (4.9 in), but this occurs over a longer span of 18 days, along with a slightly lower humidity of 83%. For more detailed information, visit Locarno weather in July.

December and August present stark contrasts in weather. December is characterized by frigid temperatures, with averages around -1°C (31°F), peaking at 9°C (49°F). The month also experiences high humidity levels at 90%, along with 119 mm (4.7 in) of precipitation spread over 12 days. In contrast, August boasts much milder conditions, featuring a minimum temperature of 7°C (45°F) and an average of 17°C (62°F), soaring to a maximum of 28°C (82°F). Despite being a wetter month, with 169 mm (6.6 in) of rainfall across 13 days, the humidity is slightly lower at 80%. For more insights, you can check Locarno weather in August.

In comparing the weather between September and December, it's clear that there is a significant shift in temperature and conditions. September boasts a mild temperature range, with a minimum of -1°C (31°F) and a comfortable average of 13°C (55°F), reaching highs of 23°C (74°F). In contrast, December features much colder conditions, with temperatures typically ranging from a minimum of -13°C (10°F) to a maximum of 9°C (49°F) and an average of -1°C (31°F). Precipitation is slightly lower in December at 119 mm (4.7 in) over 12 days, compared to September's 136 mm (5.4 in) spread across 14 days, though December's humidity at 90% creates a damp chill. For a detailed look at September's weather, you can visit Locarno weather in September.

In comparing the weather of December and October, we find a notable shift in temperature and precipitation patterns. December experiences colder temperatures, with a minimum of -13°C (10°F) and an average of -1°C (31°F), while October boasts milder conditions, ranging from a minimum of -1°C (30°F) to a maximum of 21°C (69°F). Precipitation also differs significantly; October receives a substantial 242 mm (9.5 in) over 12 days, compared to December's 119 mm (4.7 in) during the same number of days. The humidity remains consistent at 90% in both months, which can add to the chill felt in December. For more detailed information on October weather, visit Locarno weather in October.

In comparing the weather between November and December, December tends to be colder, with minimum temperatures dropping to -13°C (10°F) compared to November's milder minimum of -9°C (16°F). The average temperature in December hovers around -1°C (31°F), while November sees a more pleasant average of 3°C (38°F). Precipitation levels also differ; December experiences 119 mm (4.7 in) over 12 days, whereas November receives more rain, totaling 168 mm (6.6 in) across 13 days. Additionally, humidity remains relatively high in both months, with December at 90% and November at 88%. For a more detailed look at the weather trends, you can check Locarno weather in November.

Compare Locarno's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Locarno

As December settles in Locarno, the weather transforms significantly compared to other months. The temperatures dip, with a chilly average falling to around -1°C, and the maximums are rarely above 9°C, creating a brisk atmosphere that calls for warm clothing. It's not just the chill in the air that stands out; there's an increase in precipitation as well, with around 12 days of rain, leading to a notably humid climate at 90%. This combination of cold and wet makes December a unique time to experience Locarno's enchanting winter scenery. To learn more about the region's varied climate throughout the year, visit Locarno Climate.