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December Weather in Alto, Italy

Last updated: August 23, 2025

In Alto, Italy, the average temperature in December hovers around 7°C (45°F). Expect minimum temperatures to drop as low as -3°C (26°F), while highs can reach up to 16°C (61°F). During this month, precipitation amounts to 106 mm (4.2 in), spread over 9 days, contributing to an average humidity of 76%. Prepare for a mix of chilly days and occasional rainfall!

December Temperature in Alto

In December in Alto, the average temperature is 7°C (45°F). Maximums can reach 16°C (61°F) and minimums can be as low as -3°C (26°F). This means travelers should be prepared for a mix of cool and mild weather, making it a great time for layering and enjoying outdoor activities.

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

The chart illustrates December temperature patterns in Alto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alto, December typically has an average temperature of 7°C (45°F), with highs reaching up to 16°C (61°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec434648535967717266595044
Data source: Temperature data for Alto 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 Alto

In Alto in December, the total precipitation amount is 106 mm (4.2 in), spread over the course of 9 days.

December Precipitation Trends in Alto

The chart displays monthly precipitation patterns in Alto, 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 Alto, December typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec6153839310571764881117167106
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Alto

In Alto in December, humidity is 76%. With an average temperature of 7°C (45°F), this humidity feels like a chilly embrace that can make even short walks feel damp and uncomfortable, requiring travelers to dress in layers and prepare for sudden changes in weather.

December Average Humidity in Alto

This chart illustrates the average monthly humidity levels in Alto, 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 Alto is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%72%69%74%75%72%69%68%70%77%80%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Alto

In Alto in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Alto, you can visit Hourly UV Index in Alto.

Maximum UV Index Levels in Alto for December

The chart shows the monthly maximum UV Index (UVI) for Alto 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 Alto typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2467810997532
Data source: Alto 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.

How December Weather in Alto Compares to Other Months

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

This table compares monthly weather conditions in Alto, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)61 mm (2.4 inches)80%low
February Weather8°C (46°F)53 mm (2.1 inches)72%moderate
March Weather9°C (48°F)83 mm (3.3 inches)69%high
April Weather12°C (53°F)93 mm (3.7 inches)74%high
May Weather15°C (59°F)105 mm (4.1 inches)75%very high
June Weather19°C (67°F)71 mm (2.8 inches)72%very high
July Weather22°C (71°F)76 mm (3.0 inches)69%very high
August Weather22°C (72°F)47 mm (1.9 inches)68%very high
September Weather19°C (66°F)81 mm (3.2 inches)70%high
October Weather15°C (59°F)117 mm (4.6 inches)77%moderate
November Weather10°C (51°F)167 mm (6.6 inches)80%moderate
December Weather7°C (45°F)106 mm (4.2 inches)76%low

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