December Weather in Grotte, Italy

Last updated: August 23, 2025

In December, the average temperature in Grotte, Italy hovers around 10°C (49°F). Expect minimums to drop to -4°C (26°F) and highs reaching up to 19°C (66°F). The month sees 57 mm (2.2 in) of precipitation over 9 days, accompanied by a relatively high average humidity of 75%.

December Temperature in Grotte

In December, in Grotte, the average temperature is 10°C (49°F). The maximum can reach 19°C (66°F), while the minimum can drop as low as -4°C (26°F). It's advisable to pack versatile clothing to accommodate the varying temperatures during your travels.

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

The chart illustrates December temperature patterns in Grotte, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grotte, December typically has an average temperature of 10°C (49°F), with highs reaching up to 19°C (66°F) and lows dropping to around -4°C (26°F).

Data source: Temperature data for Grotte generated using information from the Copernicus Climate Change Service.

December Precipitation in Grotte

In Grotte in December, the total precipitation amount is 57 mm (2.2 in) over the course of 9 days.

December Precipitation Trends in Grotte

The chart displays monthly precipitation patterns in Grotte, 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 Grotte, December typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Grotte

In Grotte in December humidity is 75%. With an average temperature of 10°C (49°F), this humidity feels like a chilly dampness that clings to your skin, making even a simple stroll feel more demanding and the air heavy, requiring you to dress in layers and stay cautious of sudden temperature shifts while traveling.

December Average Humidity in Grotte

This chart illustrates the average monthly humidity levels in Grotte, 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 Grotte is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Grotte

In Grotte in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Grotte, you can check the information here.

Maximum UV Index Levels in Grotte for December

The chart shows the monthly maximum UV Index (UVI) for Grotte 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 Grotte typically reaches 3, which falls under the moderate exposure category.

Data source: Grotte 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 Grotte Compares to Other Months

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

This table compares monthly weather conditions in Grotte, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	35 mm (1.4 inches)	75%	moderate
February Weather	9°C (48°F)	53 mm (2.1 inches)	71%	moderate
March Weather	10°C (51°F)	60 mm (2.4 inches)	71%	high
April Weather	13°C (56°F)	41 mm (1.6 inches)	74%	very high
May Weather	18°C (64°F)	28 mm (1.1 inches)	73%	very high
June Weather	23°C (74°F)	22 mm (0.9 inches)	69%	very high
July Weather	26°C (79°F)	3 mm (0.1 inches)	67%	extreme
August Weather	26°C (79°F)	15 mm (0.6 inches)	66%	very high
September Weather	23°C (73°F)	38 mm (1.5 inches)	71%	very high
October Weather	18°C (64°F)	85 mm (3.3 inches)	73%	high
November Weather	14°C (57°F)	113 mm (4.4 inches)	74%	moderate
December Weather	10°C (49°F)	57 mm (2.2 inches)	75%	moderate