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
In Castelguglielmo, the beginning of December is marked by a lowered average high-temperature, shifting from November's moderate 13.2°C (55.8°F) to a frosty 7.6°C (45.7°F). An average nighttime temperature of 3.1°C (37.6°F) marks December.Humidity
The average relative humidity in December in Castelguglielmo is 79%.Rainfall
In Castelguglielmo, in December, during 10.7 rainfall days, 39mm (1.54") of precipitation is typically accumulated. Throughout the year, there are 147.6 rainfall days, and 620mm (24.41") of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows in Castelguglielmo. Throughout December, in the average 0.7 snowfall days, it receives 11mm (0.43") of snow. Throughout the year, there are 4.4 snowfall days, and 51mm (2.01") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 07:32 and sunset at 16:33. On the last day of December, sunrise is at 07:52 and sunset at 16:42 CET.
Sunshine
In December, the average sunshine is 5.6h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the average humidity in December?
How many days does it rain in December?
When does it start to snow?
What is the month with the shortest days in Castelguglielmo?
How many hours of daylight does Castelguglielmo have in December?
What time are sunrise and sunset in December in Castelguglielmo?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Castelguglielmo, Italy
- Average high temperature in December: 7.6°C
The warmest month (with the highest average high temperature) is August (30.1°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in December: 3.1°C
The month with the highest average low temperature is August (19.4°C).
The coldest month (with the lowest average low temperature) is January (2.4°C).
Average pressure in December
Castelguglielmo, Italy
- Average pressure in December: 1019.3mbar
The month with the highest atmospheric pressure is December (1019.3mbar).
The months with the lowest atmospheric pressure are June and July (1014.2mbar).
Average wind speed in December
Castelguglielmo, Italy
- Average wind speed in December: 7.9km/h
The windiest month (with the highest average wind speed) is February (9.9km/h).
The calmest month (with the lowest average wind speed) is July (7.5km/h).
Average humidity in December
Castelguglielmo, Italy
- Average humidity in December: 79%
The month with the highest relative humidity is November (81%).
The month with the lowest relative humidity is August (66%).
Average rainfall in December
Castelguglielmo, Italy
- Average rainfall in December: 39mm
The wettest month (with the highest rainfall) is May (96mm).
The driest month (with the least rainfall) is August (24mm).
Average rainfall days in December
Castelguglielmo, Italy
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is July (7.7 days).
Average snowfall in December
Castelguglielmo, Italy
- Average snowfall in December: 11mm
The month with the highest snowfall is February (18mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Castelguglielmo, Italy
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is February (1.8 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
Castelguglielmo, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in December
Castelguglielmo, Italy
- Average sunshine days in December: 17.2 days
The month with the most sunshine days is July (22.4 days).
The month with the least sunshine days is May (9.1 days).
Average UV index in December
Castelguglielmo, Italy
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in December
Castelguglielmo, Italy
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
Castelguglielmo, Italy
- Average visibility in December: 9km
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, November and December (9km).
