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December Weather in Riola, Italy

Last updated: August 23, 2025

In December, the average temperature in Riola, Italy hovers around 4°C (39°F). Expect chilly days with temperatures dipping as low as -8°C (19°F) and occasionally reaching up to 14°C (57°F). Be prepared for 117 mm (4.6 in) of precipitation over 12 days, contributing to an average humidity level of 85%. Don't forget your umbrella!

December Temperature in Riola

In December in Riola, the average temperature is 4°C (39°F). Maximum temperatures can reach 14°C (57°F), while minimums can drop as low as -8°C (19°F). It's essential to pack warm clothing and be prepared for chilly conditions if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Riola, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Riola, December typically has an average temperature of 4°C (39°F), with highs reaching up to 14°C (57°F) and lows dropping to around -8°C (19°F).
JanFebMarAprMayJunJulAugSepOctNovDec374144515868717263554639
Data source: Temperature data for Riola 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 Riola

In Riola in December, the total precipitation amount is 117 mm (4.6 in), occurring over a span of 12 days.

December Precipitation Trends in Riola

The chart displays monthly precipitation patterns in Riola, 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 Riola, December typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4592729416669728111498162117
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Riola

In Riola in December, humidity is 85%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making traveling uncomfortable and requiring extra layers to ward off the cold and moisture.

December Average Humidity in Riola

This chart illustrates the average monthly humidity levels in Riola, 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 Riola is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%79%69%71%70%65%61%54%66%83%88%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Riola

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

Maximum UV Index Levels in Riola for December

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

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

This table compares monthly weather conditions in Riola, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)45 mm (1.8 inches)87%low
February Weather5°C (41°F)92 mm (3.6 inches)79%moderate
March Weather7°C (44°F)72 mm (2.8 inches)69%high
April Weather11°C (51°F)94 mm (3.7 inches)71%high
May Weather14°C (58°F)166 mm (6.5 inches)70%very high
June Weather20°C (68°F)69 mm (2.7 inches)65%very high
July Weather22°C (72°F)72 mm (2.8 inches)61%very high
August Weather22°C (72°F)81 mm (3.2 inches)54%very high
September Weather17°C (64°F)114 mm (4.5 inches)66%high
October Weather13°C (55°F)98 mm (3.9 inches)83%moderate
November Weather8°C (46°F)162 mm (6.4 inches)88%moderate
December Weather4°C (39°F)117 mm (4.6 inches)85%low

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