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 onset of December, Altdorf experiences a modest temperature adjustment, with the average high-temperature gently receding from a cold 4.3°C (39.7°F) in November to a still wintry 0.5°C (32.9°F). December in Altdorf is noted for a mean low-temperature of -5.9°C (21.4°F).Humidity
In Altdorf, Switzerland, the average relative humidity in December is 85%.Rainfall
In December, the rain falls for 14.4 days. Throughout December, 119mm (4.69") of precipitation is accumulated. In Altdorf, during the entire year, the rain falls for 216.7 days and collects up to 1294mm (50.94") of precipitation.Snowfall
January through May, October through December are months with snowfall in Altdorf. In Altdorf, in December, during 7 snowfall days, 163mm (6.42") of snow is typically accumulated. In Altdorf, during the entire year, snow falls for 41 days and aggregates up to 854mm (33.62") of snow.Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:50 and sunset at 16:38. On the last day of December, in Altdorf, sunrise is at 08:10 and sunset at 16:46 CET.
Sunshine
The month with the least sunshine in Altdorf is December, with an average of 5h of sunshine.UV index
The average daily maximum UV index in December in Altdorf is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
How cold is December in Altdorf?
What is the average humidity in December in Altdorf?
How much does it rain in Altdorf in December?
How much does it snow in Altdorf in December?
What is the month with the shortest days in Altdorf?
What is the average length of the day in December in Altdorf?
When is the sunrise / sunset in December in Altdorf?
What is the month with the least sunshine in Altdorf?
How long on average sun shines in December in Altdorf?
How high is the UV index in December in Altdorf?
Average temperature in December
Altdorf, Switzerland
- Average high temperature in December: 0.5°C
The warmest month (with the highest average high temperature) is August (18.8°C).
The month with the lowest average high temperature is January (-0.9°C).
- Average low temperature in December: -5.9°C
The month with the highest average low temperature is August (8.8°C).
The coldest month (with the lowest average low temperature) is February (-8°C).
Average pressure in December
Altdorf, Switzerland
- Average pressure in December: 1020.9mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in December
Altdorf, Switzerland
- Average wind speed in December: 8km/h
The windiest month (with the highest average wind speed) is December (8km/h).
The calmest month (with the lowest average wind speed) is August (5.7km/h).
Average humidity in December
Altdorf, Switzerland
- Average humidity in December: 85%
The month with the highest relative humidity is March (90%).
The months with the lowest relative humidity are July and August (80%).
Average rainfall in December
Altdorf, Switzerland
- Average rainfall in December: 119mm
The wettest month (with the highest rainfall) is August (166mm).
The driest month (with the least rainfall) is February (70mm).
Average rainfall days in December
Altdorf, Switzerland
- Average rainfall days in December: 14.4 days
The month with the highest number of rainy days is July (24.1 days).
The month with the least rainy days is February (12.3 days).
Average snowfall in December
Altdorf, Switzerland
- Average snowfall in December: 163mm
The month with the highest snowfall is February (232mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Altdorf, Switzerland
- Average snowfall days in December: 7 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Altdorf, Switzerland
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Altdorf, Switzerland
- Average sunshine days in December: 13.1 days
The month with the most sunshine days is October (15.5 days).
The month with the least sunshine days is July (4.4 days).
Average UV index in December
Altdorf, Switzerland
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in December
Altdorf, Switzerland
- Average cloud cover in December: 47
The months with the most cloud cover are February, March and May (Cloud cover 48).
The months with the least cloud cover are August and October (Cloud cover 37).
Average visibility in December
Altdorf, Switzerland
- Average visibility in December: 8km
The months with the highest visibility are April, May, June, July, August, October, November and December (8km).
The months with the lowest visibility are January, February, March and September (7km).
Altdorf, Switzerland
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