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
Weather in December
Temperature
A subtle change in temperatures is noted as November gives way to December, with average highs reducing from a fresh 11.7°C (53.1°F) to a frosty 7.1°C (44.8°F). Nighttime temperatures in December average to a cold 2°C (35.6°F).Humidity
The average relative humidity in December in Castel San Giovanni, Italy, is 80%.Rainfall
In Castel San Giovanni, in December, during 8.8 rainfall days, 39mm (1.54") of precipitation is typically accumulated. Throughout the year, in Castel San Giovanni, there are 166.5 rainfall days, and 803mm (31.61") of precipitation is accumulated.Snowfall
January through March and December are months with snowfall in Castel San Giovanni. December is the first month it typically snows. Throughout December, in the average 1.5 snowfall days, it receives 19mm (0.75") of snow. Throughout the year, there are 6 snowfall days, and 115mm (4.53") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 07:40 and sunset at 16:42. On the last day of the month, sunrise is at 08:00 and sunset at 16:50 CET.
Sunshine
The average sunshine in December is 5.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
What are the temperatures in Castel San Giovanni in December?
What is the average humidity in December in Castel San Giovanni?
How much does it rain in Castel San Giovanni in December?
When does it start to snow in Castel San Giovanni?
What is the month with the shortest days in Castel San Giovanni?
How many hours of daylight does Castel San Giovanni have in December?
When are sunrise and sunset in December in Castel San Giovanni?
How long on average sun shines in December in Castel San Giovanni?
When is the lowest UV index in Castel San Giovanni?
How high is the UV index in December in Castel San Giovanni?
Average temperature in December
Castel San Giovanni, Italy
- Average high temperature in December: 7.1°C
The warmest month (with the highest average high temperature) is July (29.5°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in December: 2°C
The month with the highest average low temperature is August (18.1°C).
The coldest month (with the lowest average low temperature) is January (1.1°C).
Average pressure in December
Castel San Giovanni, Italy
- Average pressure in December: 1019.6mbar
The month with the highest atmospheric pressure is December (1019.6mbar).
The months with the lowest atmospheric pressure are April and May (1014.4mbar).
Average wind speed in December
Castel San Giovanni, Italy
- Average wind speed in December: 5.3km/h
The windiest month (with the highest average wind speed) is April (7km/h).
The calmest months (with the lowest average wind speed) are August and December (5.3km/h).
Average humidity in December
Castel San Giovanni, Italy
- Average humidity in December: 80%
The month with the highest relative humidity is November (84%).
The month with the lowest relative humidity is August (69%).
Average rainfall in December
Castel San Giovanni, Italy
- Average rainfall in December: 39mm
The wettest month (with the highest rainfall) is November (96mm).
The driest month (with the least rainfall) is January (36mm).
Average rainfall days in December
Castel San Giovanni, Italy
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in December
Castel San Giovanni, Italy
- Average snowfall in December: 19mm
The month with the highest snowfall is January (40mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Castel San Giovanni, Italy
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is January (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Castel San Giovanni, Italy
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is November (Average sunshine: 5h and 0min).
Average sunshine days in December
Castel San Giovanni, Italy
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in December
Castel San Giovanni, Italy
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Castel San Giovanni, Italy
- Average cloud cover in December: 35
The month with the most cloud cover is November (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 19).
Average visibility in December
Castel San Giovanni, Italy
- Average visibility in December: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is November (8km).
Castel San Giovanni, Italy
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