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December Weather in Siror, Italy

Last updated: August 23, 2025

In Siror, Italy, the average temperature in December hovers around -4°C (25°F), with lows plunging to a chilly -17°C (1°F) and highs peaking at a milder 6°C (44°F). Expect to encounter 121 mm (4.8 in) of precipitation over about 8 days, contributing to the region's high average humidity of 90%.

December Temperature in Siror

In December in Siror, the average temperature is -4°C (25°F), with maximums reaching up to 6°C (44°F) and minimums dropping as low as -17°C (1°F). Travelers should be prepared for cold conditions and dress warmly when visiting during this time.

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

The chart illustrates December temperature patterns in Siror, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siror, December typically has an average temperature of -4°C (25°F), with highs reaching up to 6°C (44°F) and lows dropping to around -17°C (1°F).
JanFebMarAprMayJunJulAugSepOctNovDec232832384656585851433525
Data source: Temperature data for Siror 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 Siror

In Siror in December, the precipitation amount is 121 mm (4.8 in) over the course of 8 days.

December Precipitation Trends in Siror

The chart displays monthly precipitation patterns in Siror, 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 Siror, December typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec415880139219233236268164137181121
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Siror

In Siror in December humidity is 90%. With an average temperature of -4°C (25°F), this humidity feels like a dense, icy blanket wrapping around you, making travel feel particularly stifling in the cold despite the sub-zero temperatures.

December Average Humidity in Siror

This chart illustrates the average monthly humidity levels in Siror, 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 Siror is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%89%86%83%78%79%82%80%83%90%89%90%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Siror

In Siror 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 Siror, you can visit Hourly UV Index in Siror.

Maximum UV Index Levels in Siror for December

The chart shows the monthly maximum UV Index (UVI) for Siror 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 Siror typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Siror 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 Siror Compares to Other Months

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

This table compares monthly weather conditions in Siror, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)41 mm (1.6 inches)93%low
February Weather-2°C (29°F)58 mm (2.3 inches)89%moderate
March Weather0°C (32°F)80 mm (3.1 inches)86%high
April Weather3°C (38°F)139 mm (5.5 inches)83%high
May Weather8°C (46°F)219 mm (8.6 inches)78%very high
June Weather13°C (57°F)233 mm (9.2 inches)79%very high
July Weather14°C (58°F)236 mm (9.3 inches)82%very high
August Weather14°C (58°F)268 mm (10.6 inches)80%very high
September Weather11°C (52°F)164 mm (6.5 inches)83%high
October Weather6°C (44°F)137 mm (5.4 inches)90%moderate
November Weather1°C (35°F)181 mm (7.1 inches)89%moderate
December Weather-4°C (25°F)121 mm (4.8 inches)90%low

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