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December Weather in Formia, Italy

Last updated: August 23, 2025

In December, the average temperature in Formia, Italy is a mild 11°C (53°F), with readings dipping to a cool 5°C (41°F) and peaking at a comfortable 17°C (63°F). Expect 209 mm (8.2 in) of precipitation over 14 days, contributing to a high average humidity of 84%. Perfect for those who enjoy a refreshing atmosphere!

December Temperature in Formia

In December in Formia, the average temperature is 11°C (53°F). Maximums can reach 17°C (63°F), while minimums can drop as low as 5°C (41°F). This makes it a great time to explore Formia while enjoying mild weather.

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

The chart illustrates December temperature patterns in Formia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Formia, December typically has an average temperature of 11°C (53°F), with highs reaching up to 17°C (63°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec495152576472777872655952
Data source: Temperature data for Formia 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 Formia

In Formia in December, the total precipitation amount is 209 mm (8.2 in), occurring over the span of 14 days.

December Precipitation Trends in Formia

The chart displays monthly precipitation patterns in Formia, 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 Formia, December typically receives around 209 mm (8.2 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec96115946465301611103116316209
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Formia

In Formia in December, humidity is 84%. With an average temperature of 11°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a bit uncomfortable and requiring extra layers to stay warm while traveling.

December Average Humidity in Formia

This chart illustrates the average monthly humidity levels in Formia, 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 Formia is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%76%69%70%70%61%57%53%65%75%82%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Formia

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

Maximum UV Index Levels in Formia for December

The chart shows the monthly maximum UV Index (UVI) for Formia 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 Formia typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34579101097642
Data source: Formia 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 Formia Compares to Other Months

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

This table compares monthly weather conditions in Formia, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)96 mm (3.8 inches)84%moderate
February Weather11°C (51°F)115 mm (4.5 inches)76%moderate
March Weather11°C (53°F)94 mm (3.7 inches)69%moderate
April Weather14°C (57°F)64 mm (2.5 inches)70%high
May Weather18°C (64°F)65 mm (2.5 inches)70%very high
June Weather22°C (72°F)30 mm (1.2 inches)61%very high
July Weather25°C (77°F)16 mm (0.6 inches)57%very high
August Weather26°C (79°F)11 mm (0.4 inches)53%very high
September Weather22°C (73°F)102 mm (4.0 inches)65%high
October Weather18°C (65°F)116 mm (4.6 inches)75%high
November Weather15°C (59°F)316 mm (12.4 inches)81%moderate
December Weather11°C (53°F)209 mm (8.2 inches)84%low

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