Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
Grottaferrata's December weather shows a modest shift in high-temperatures, falling from November's refreshing 16.5°C (61.7°F) to a fresh 12.6°C (54.7°F). Grottaferrata encounters a steady low-temperature average of 6.6°C (43.9°F) throughout the month of December.Humidity
The average relative humidity in December in Grottaferrata is 73%.Rainfall
In Grottaferrata, in December, during 12.1 rainfall days, 56mm (2.2") of precipitation is typically accumulated. In Grottaferrata, during the entire year, the rain falls for 143.3 days and collects up to 595mm (23.43") of precipitation.Snowfall
Months with snowfall in Grottaferrata, Italy, are February and December. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 3mm (0.12") of snow. Throughout the year, there are 1.1 snowfall days, and 19mm (0.75") of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Grottaferrata.On the first day of the month, sunrise is at 07:17 and sunset at 16:39. On the last day of December, sunrise is at 07:36 and sunset at 16:48 CET.
Sunshine
The average sunshine in December is 6.3h.UV index
The months with the lowest UV index in Grottaferrata are January, February and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 3 during December translates into the following directions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grottaferrata in December?
What is the average humidity in December in Grottaferrata?
How many days does it rain in December in Grottaferrata?
When does it start to snow in Grottaferrata?
What is the month with the shortest days in Grottaferrata?
What is the average length of the day in December in Grottaferrata?
When is the sunrise / sunset in December in Grottaferrata?
How many hours of sunshine does Grottaferrata have in December?
When is the lowest UV index in Grottaferrata?
What is the UV index intensity in December in Grottaferrata?
Average temperature in December
Grottaferrata, Italy
- Average high temperature in December: 12.6°C
The warmest month (with the highest average high temperature) is August (30.5°C).
The month with the lowest average high temperature is January (11.4°C).
- Average low temperature in December: 6.6°C
The month with the highest average low temperature is August (20.9°C).
The coldest month (with the lowest average low temperature) is January (5.7°C).
Average pressure in December
Grottaferrata, Italy
- Average pressure in December: 1018.5mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The month with the lowest atmospheric pressure is April (1014mbar).
Average wind speed in December
Grottaferrata, Italy
- Average wind speed in December: 11km/h
The windiest month (with the highest average wind speed) is February (12.3km/h).
The calmest month (with the lowest average wind speed) is August (8.5km/h).
Average humidity in December
Grottaferrata, Italy
- Average humidity in December: 73%
The months with the highest relative humidity are January and November (75%).
The month with the lowest relative humidity is August (57%).
Average rainfall in December
Grottaferrata, Italy
- Average rainfall in December: 56mm
The wettest month (with the highest rainfall) is November (111mm).
The driest month (with the least rainfall) is August (16mm).
Average rainfall days in December
Grottaferrata, Italy
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is November (15.2 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in December
Grottaferrata, Italy
- Average snowfall in December: 3mm
The month with the highest snowfall is February (16mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Grottaferrata, Italy
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Grottaferrata, Italy
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 6h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days in December
Grottaferrata, Italy
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is August (21.4 days).
The month with the least sunshine days is November (12.5 days).
Average UV index in December
Grottaferrata, Italy
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in December
Grottaferrata, Italy
- Average cloud cover in December: 31
The month with the most cloud cover is January (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in December
Grottaferrata, Italy
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
