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December Weather in Grassano, Italy

Last updated: August 23, 2025

In Grassano, Italy, the average temperature in December hovers around 8°C (46°F). Temperatures can dip as low as -2°C (29°F), while reaching a pleasant high of 17°C (62°F). Visitors should prepare for 51 mm (2.0 in) of precipitation over approximately 10 days, coupled with an average humidity of 82%. Stay comfortable and enjoy the diverse climate!

December Temperature in Grassano

In December in Grassano, the average temperature is 8°C (46°F). Maximums can reach 17°C (62°F) and minimums can be as low as -2°C (29°F). Travelers should prepare for a mix of mild and chilly weather, making layers a smart choice for comfort.

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

The chart illustrates December temperature patterns in Grassano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grassano, December typically has an average temperature of 8°C (46°F), with highs reaching up to 17°C (62°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec424648556373787870605346
Data source: Temperature data for Grassano 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 Grassano

In Grassano in December, the total precipitation amount is 51 mm (2.0 in) spread over a period of 10 days.

December Precipitation Trends in Grassano

The chart displays monthly precipitation patterns in Grassano, 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 Grassano, December typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec5153576266512436335210151
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Grassano

In Grassano in December humidity is 82%. With an average temperature of 8°C (46°F), this humidity feels like a thick, damp blanket wrapping around you, making travel uncomfortable and creating a sense of heaviness in the air that can sap your energy quickly.

December Average Humidity in Grassano

This chart illustrates the average monthly humidity levels in Grassano, 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 Grassano is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%74%70%71%71%65%61%56%66%74%80%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Grassano

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

Maximum UV Index Levels in Grassano for December

The chart shows the monthly maximum UV Index (UVI) for Grassano 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 Grassano typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098642
Data source: Grassano 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 Grassano Compares to Other Months

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

This table compares monthly weather conditions in Grassano, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)51 mm (2.0 inches)82%moderate
February Weather8°C (46°F)53 mm (2.1 inches)74%moderate
March Weather9°C (48°F)57 mm (2.2 inches)70%high
April Weather13°C (55°F)62 mm (2.4 inches)71%very high
May Weather17°C (64°F)66 mm (2.6 inches)71%very high
June Weather23°C (73°F)51 mm (2.0 inches)65%very high
July Weather26°C (78°F)24 mm (0.9 inches)61%very high
August Weather26°C (79°F)36 mm (1.4 inches)56%very high
September Weather21°C (70°F)33 mm (1.3 inches)66%very high
October Weather16°C (61°F)52 mm (2.0 inches)74%high
November Weather12°C (53°F)101 mm (4.0 inches)80%moderate
December Weather8°C (46°F)51 mm (2.0 inches)82%low

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