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
With the arrival of December, Costanzana experiences a modest decline in average high-temperatures, transitioning from a fresh 11.3°C (52.3°F) in November to a frosty 6.5°C (43.7°F). The December average low temperature, marginally lower than the daytime high, records at a wintry 1.7°C (35.1°F).Humidity
In Costanzana, the average relative humidity in December is 80%.Rainfall
In Costanzana, during December, the rain falls for 6.8 days and regularly aggregates up to 27mm (1.06") of precipitation. Throughout the year, there are 157.1 rainfall days, and 614mm (24.17") of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Costanzana, in December, during 1.3 snowfall days, 10mm (0.39") of snow is typically accumulated. Throughout the year, there are 6.3 snowfall days, and 78mm (3.07") of snow is accumulated.Daylight
December has the shortest days of the year in Costanzana, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 07:45 and sunset at 16:45. On the last day of December, in Costanzana, Italy, sunrise is at 08:05 and sunset at 16:53 CET.
Sunshine
In December, the average sunshine is 5.9h.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 estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Experience reduced UV exposure by about half when donning a wide-brim hat. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
How cold is December in Costanzana?
What is the average humidity in December in Costanzana?
How many days does it rain in December in Costanzana?
How much does it snow in Costanzana in December?
What is the month with the shortest days in Costanzana?
How many hours of daylight does Costanzana have in December?
When is the sunrise / sunset in December in Costanzana?
How long on average sun shines in December in Costanzana?
What are the months with the lowest UV index in Costanzana?
How high is the UV index in December in Costanzana?
Average temperature in December
Costanzana, Italy
- Average high temperature in December: 6.5°C
The warmest month (with the highest average high temperature) is July (28.9°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in December: 1.7°C
The month with the highest average low temperature is August (17.3°C).
The coldest month (with the lowest average low temperature) is January (0.3°C).
Average pressure in December
Costanzana, Italy
- Average pressure in December: 1019.7mbar
The month with the highest atmospheric pressure is December (1019.7mbar).
The month with the lowest atmospheric pressure is April (1014.4mbar).
Average wind speed in December
Costanzana, Italy
- Average wind speed in December: 5.1km/h
The windiest month (with the highest average wind speed) is April (6.6km/h).
The calmest months (with the lowest average wind speed) are September and December (5.1km/h).
Average humidity in December
Costanzana, Italy
- Average humidity in December: 80%
The month with the highest relative humidity is November (83%).
The month with the lowest relative humidity is August (72%).
Average rainfall in December
Costanzana, Italy
- Average rainfall in December: 27mm
The wettest month (with the highest rainfall) is November (103mm).
The driest month (with the least rainfall) is January (15mm).
Average rainfall days in December
Costanzana, Italy
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is August (17.8 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in December
Costanzana, Italy
- Average snowfall in December: 10mm
The month with the highest snowfall is January (32mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Costanzana, Italy
- Average snowfall days in December: 1.3 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Costanzana, 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: 4h and 54min).
Average sunshine days in December
Costanzana, Italy
- Average sunshine days in December: 20.9 days
The month with the most sunshine days is December (20.9 days).
The month with the least sunshine days is July (7.7 days).
Average UV index in December
Costanzana, 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, February, November and December (UV index 2).
Average cloud cover in December
Costanzana, Italy
- Average cloud cover in December: 36
The month with the most cloud cover is November (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 20).
Average visibility in December
Costanzana, Italy
- Average visibility in December: 8km
The months with the highest visibility are February, March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, November and December (8km).
Costanzana, Italy
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