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
The transition into December indicates a reduction in the average high-temperature, down to a frosty 7.6°C (45.7°F) from November's moderate 13.2°C (55.8°F). In Castelguglielmo, the month of December records an average minimum temperature of 3.1°C (37.6°F), a slight dip from the daily highs.Humidity
The average relative humidity in December in Castelguglielmo is 79%.Rainfall
In Castelguglielmo, during December, the rain falls for 10.7 days and regularly aggregates up to 39mm (1.54") of precipitation. In Castelguglielmo, during the entire year, the rain falls for 147.6 days and collects up to 620mm (24.41") of precipitation.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. In Castelguglielmo, during the entire year, snow falls for 4.4 days and aggregates up to 51mm (2.01") of snow.Daylight
December has the shortest days of the year, 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, in Castelguglielmo, 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 in Castelguglielmo, Italy, are January, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: An average UV index of 2 in December transforms into this advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
What is the usual temperature for Castelguglielmo in December?
What is the average humidity in December in Castelguglielmo?
How much does it rain in Castelguglielmo in December?
When does it start snowing in Castelguglielmo?
What is the month with the shortest days in Castelguglielmo?
How many hours of daylight does Castelguglielmo have in December?
When are sunrise and sunset in December in Castelguglielmo?
How long on average sun shines in December in Castelguglielmo?
When is the lowest UV index in Castelguglielmo?
What is the UV index reading in December in Castelguglielmo?
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).
Castelguglielmo, Italy
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