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 commencement of December includes a gentle temperature shift, with the average high-temperature dropping a bit from an icy 2.4°C (36.3°F) in November to a freezing cold -1.4°C (29.5°F). In Sierre, the average low-temperature during the month of December is a still subzero cold -9.4°C (15.1°F).Humidity
In December, the average relative humidity is 85%.Rainfall
In Sierre, during December, the rain falls for 5.9 days and regularly aggregates up to 110mm (4.33") of precipitation. In Sierre, during the entire year, the rain falls for 159.9 days and collects up to 1035mm (40.75") of precipitation.Snowfall
January through December are months with snowfall. December is the month with the most snowfall. Snow falls for 18.4 days and accumulates 887mm (34.92") of snow.Daylight
December has the shortest days of the year in Sierre, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 07:52 and sunset at 16:45. On the last day of the month, sunrise is at 08:12 and sunset at 16:53 CET.
Sunshine
The average sunshine in December in Sierre is 4.8h.UV index
In December, the average daily maximum UV index in Sierre, Switzerland, is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 in December translates into these instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Enhance your sun protection with tightly woven, yet airy clothing. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
How cold is December in Sierre?
What is the average humidity in December in Sierre?
How many days does it rain in December in Sierre?
What is the snowiest month in Sierre?
How many days does it snow in December in Sierre?
What is the month with the shortest days in Sierre?
How many hours of daylight does Sierre have in December?
What time are sunrise and sunset in December in Sierre?
How long on average sun shines in December in Sierre?
How high is the UV index in December in Sierre?
Average temperature in December
Sierre, Switzerland
- Average high temperature in December: -1.4°C
The warmest month (with the highest average high temperature) is July (16.5°C).
The month with the lowest average high temperature is January (-2.6°C).
- Average low temperature in December: -9.4°C
The month with the highest average low temperature is August (6.4°C).
The coldest month (with the lowest average low temperature) is February (-11.3°C).
Average pressure in December
Sierre, Switzerland
- Average pressure in December: 1021mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in December
Sierre, Switzerland
- Average wind speed in December: 8.4km/h
The windiest month (with the highest average wind speed) is December (8.4km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in December
Sierre, Switzerland
- Average humidity in December: 85%
The month with the highest relative humidity is March (91%).
The months with the lowest relative humidity are July and August (79%).
Average rainfall in December
Sierre, Switzerland
- Average rainfall in December: 110mm
The wettest month (with the highest rainfall) is May (126mm).
The driest months (with the least rainfall) are September and October (54mm).
Average rainfall days in December
Sierre, Switzerland
- Average rainfall days in December: 5.9 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in December
Sierre, Switzerland
- Average snowfall in December: 887mm
The month with the highest snowfall is December (887mm).
The month with the least snowfall is July (5mm).
Average snowfall days in December
Sierre, Switzerland
- Average snowfall days in December: 18.4 days
The month with the highest number of snowfall days is March (21.1 days).
The month with the least snowfall days is August (0.4 days).
Average daylight in December /
Average sunshine in December
Sierre, 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 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Sierre, Switzerland
- Average sunshine days in December: 12.2 days
The month with the most sunshine days is October (15.4 days).
The month with the least sunshine days is May (4.2 days).
Average UV index in December
Sierre, 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, March, April and November (UV index 1).
Average cloud cover in December
Sierre, Switzerland
- Average cloud cover in December: 48
The month with the most cloud cover is March (Cloud cover 56).
The month with the least cloud cover is October (Cloud cover 38).
Average visibility in December
Sierre, Switzerland
- Average visibility in December: 7km
The months with the highest visibility are June, July, August and October (8km).
The months with the lowest visibility are January, February and March (6km).
Sierre, Switzerland
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