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 beginning of December brings a minor change in the average high-temperature, shifting from a cold 0.4°C (32.7°F) in November to a subzero cold -3.2°C (26.2°F). Throughout December, a steady low-temperature average of -12.7°C (9.1°F) is noted.Humidity
In Casaccia, the average relative humidity in December is 87%.Rainfall
In Casaccia, in December, it is raining for 2.6 days, with typically 34mm (1.34") of accumulated precipitation. In Casaccia, during the entire year, the rain falls for 139.9 days and collects up to 641mm (25.24") of precipitation.Snowfall
Months with snowfall in Casaccia are January through June, September through December. In Casaccia, Switzerland, in December, snow falls for 12.9 days, with typically accumulated 250mm (9.84") of snow. Throughout the year, in Casaccia, there are 97.2 snowfall days, and 1956mm (77.01") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 07:44 and sunset at 16:36. On the last day of the month, sunrise is at 08:04 and sunset at 16:44 CET.
Sunshine
The average sunshine in December in Casaccia is 4.7h.UV index
In Casaccia, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Casaccia in December?
What is the average humidity in December in Casaccia?
How much does it rain in Casaccia in December?
How many days does it snow in December in Casaccia?
What is the month with the shortest days in Casaccia?
What is the average length of the day in December in Casaccia?
When are sunrise and sunset in December in Casaccia?
How many hours of sunshine does Casaccia have in December?
What is the UV index reading in December in Casaccia?
Average temperature in December
Casaccia, Switzerland
- Average high temperature in December: -3.2°C
The warmest month (with the highest average high temperature) is July (15.4°C).
The month with the lowest average high temperature is January (-4.4°C).
- Average low temperature in December: -12.7°C
The month with the highest average low temperature is August (5°C).
The coldest month (with the lowest average low temperature) is January (-13.9°C).
Average pressure in December
Casaccia, Switzerland
- Average pressure in December: 1020.6mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in December
Casaccia, Switzerland
- Average wind speed in December: 9.9km/h
The windiest months (with the highest average wind speed) are February and December (9.9km/h).
The calmest month (with the lowest average wind speed) is August (7.5km/h).
Average humidity in December
Casaccia, Switzerland
- Average humidity in December: 87%
The month with the highest relative humidity is April (94%).
The month with the lowest relative humidity is July (81%).
Average rainfall in December
Casaccia, Switzerland
- Average rainfall in December: 34mm
The wettest month (with the highest rainfall) is November (84mm).
The driest month (with the least rainfall) is January (20mm).
Average rainfall days in December
Casaccia, Switzerland
- Average rainfall days in December: 2.6 days
The month with the highest number of rainy days is July (22.6 days).
The month with the least rainy days is December (2.6 days).
Average snowfall in December
Casaccia, Switzerland
- Average snowfall in December: 250mm
The month with the highest snowfall is November (492mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Casaccia, Switzerland
- Average snowfall days in December: 12.9 days
The month with the highest number of snowfall days is March (17 days).
The month with the least snowfall days is August (0 days).
Average daylight in December /
Average sunshine in December
Casaccia, Switzerland
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is November (Average sunshine: 3h and 54min).
Average sunshine days in December
Casaccia, Switzerland
- Average sunshine days in December: 18.8 days
The month with the most sunshine days is December (18.8 days).
The month with the least sunshine days is July (6.2 days).
Average UV index in December
Casaccia, Switzerland
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 3).
The months with the lowest UV index are January, February, March, April, October and November (UV index 1).
Average cloud cover in December
Casaccia, Switzerland
- Average cloud cover in December: 52
The month with the most cloud cover is April (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 47).
Average visibility in December
Casaccia, Switzerland
- Average visibility in December: 7km
The month with the highest visibility is July (8km).
The month with the lowest visibility is April (5km).
