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
The average high-temperature shows a slight dip in December, from November's refreshing 13.9°C (57°F) to a frosty 9.7°C (49.5°F). In Grotte di Castro, December nights cool down to an average of 3.4°C (38.1°F).Humidity
In December, the average relative humidity is 83%.Rainfall
In Grotte di Castro, Italy, during December, the rain falls for 11.1 days and regularly aggregates up to 45mm (1.77") of precipitation. Throughout the year, in Grotte di Castro, there are 140.1 rainfall days, and 556mm (21.89") of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Grotte di Castro, Italy, during December, snow falls for 1.5 days and regularly aggregates up to 26mm (1.02") of snow. Throughout the year, there are 9.9 snowfall days, and 203mm (7.99") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December in Grotte di Castro, sunrise is at 07:23 and sunset at 16:40. On the last day of the month, sunrise is at 07:42 and sunset at 16:48 CET.
Sunshine
In December, the average sunshine is 5.5h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 2 during December translates into the following directions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Stay sun-safe with clothing that is both closely woven and worn loosely. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grotte di Castro in December?
What is the average humidity in December in Grotte di Castro?
How many days does it rain in December in Grotte di Castro?
How many days does it snow in December in Grotte di Castro?
What is the month with the shortest days in Grotte di Castro?
How many hours of daylight does Grotte di Castro have in December?
What time are sunrise and sunset in December in Grotte di Castro?
How long on average sun shines in December in Grotte di Castro?
When is the lowest UV index in Grotte di Castro?
What is the UV index reading in December in Grotte di Castro?
Average temperature in December
Grotte di Castro, Italy
- Average high temperature in December: 9.7°C
The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (8.7°C).
- Average low temperature in December: 3.4°C
The month with the highest average low temperature is August (17.2°C).
The coldest month (with the lowest average low temperature) is January (2.2°C).
Average pressure in December
Grotte di Castro, 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 July (1013.7mbar).
Average wind speed in December
Grotte di Castro, Italy
- Average wind speed in December: 9.9km/h
The windiest month (with the highest average wind speed) is February (12.4km/h).
The calmest month (with the lowest average wind speed) is July (7.7km/h).
Average humidity in December
Grotte di Castro, Italy
- Average humidity in December: 83%
The month with the highest relative humidity is November (85%).
The month with the lowest relative humidity is August (61%).
Average rainfall in December
Grotte di Castro, Italy
- Average rainfall in December: 45mm
The wettest month (with the highest rainfall) is November (86mm).
The driest month (with the least rainfall) is July (29mm).
Average rainfall days in December
Grotte di Castro, Italy
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is August (7.7 days).
Average snowfall in December
Grotte di Castro, Italy
- Average snowfall in December: 26mm
The month with the highest snowfall is January (104mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Grotte di Castro, Italy
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Grotte di Castro, Italy
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Grotte di Castro, Italy
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is August (22.1 days).
The month with the least sunshine days is April (12.4 days).
Average UV index in December
Grotte di Castro, Italy
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Grotte di Castro, Italy
- Average cloud cover in December: 41
The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Grotte di Castro, Italy
- Average visibility in December: 9km
The months with the highest visibility are July and August (10km).
The month with the lowest visibility is November (8km).
