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 commencement of December, Vionnaz records a moderate temperature decline, with the average high easing from November's wintry 5.9°C (42.6°F) to a still icy 2°C (35.6°F). During December, the nighttime temperature averages to a subzero cold -4.7°C (23.5°F).Humidity
In Vionnaz, Switzerland, the average relative humidity in December is 83%.Rainfall
In Vionnaz, during December, the rain falls for 15.8 days and regularly aggregates up to 131mm (5.16") of precipitation. Throughout the year, in Vionnaz, there are 215.6 rainfall days, and 1219mm (47.99") of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Vionnaz. In December, in Vionnaz, it is snowing for 5.8 days. Throughout December, 114mm (4.49") of snow is accumulated. Throughout the year, in Vionnaz, Switzerland, there are 31.1 snowfall days, and 561mm (22.09") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 42min of daylight.On the first day of December in Vionnaz, Switzerland, sunrise is at 07:55 and sunset at 16:47. On the last day of the month, sunrise is at 08:15 and sunset at 16:55 CET.
Sunshine
January and December, with an average of 5.5h of sunshine, are months with the least sunshine in Vionnaz.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Vionnaz. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Vionnaz?
What is the average humidity in December in Vionnaz?
How many days does it rain in December in Vionnaz?
How many days does it snow in December in Vionnaz?
What is the month with the shortest days in Vionnaz?
What is the average length of the day in December in Vionnaz?
What time are sunrise and sunset in December in Vionnaz?
What are the months with the least sunshine in Vionnaz?
How long on average sun shines in December in Vionnaz?
When is the lowest UV index in Vionnaz?
What is the UV index reading in December in Vionnaz?
Average temperature in December
Vionnaz, Switzerland
- Average high temperature in December: 2°C
The warmest months (with the highest average high temperature) are July and August (19.8°C).
The month with the lowest average high temperature is January (0.6°C).
- Average low temperature in December: -4.7°C
The month with the highest average low temperature is July (9.3°C).
The coldest month (with the lowest average low temperature) is February (-7.1°C).
Average pressure in December
Vionnaz, Switzerland
- Average pressure in December: 1021.1mbar
The month with the highest atmospheric pressure is December (1021.1mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in December
Vionnaz, Switzerland
- Average wind speed in December: 9.2km/h
The windiest month (with the highest average wind speed) is December (9.2km/h).
The calmest month (with the lowest average wind speed) is August (6.5km/h).
Average humidity in December
Vionnaz, Switzerland
- Average humidity in December: 83%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (77%).
Average rainfall in December
Vionnaz, Switzerland
- Average rainfall in December: 131mm
The wettest month (with the highest rainfall) is May (144mm).
The driest month (with the least rainfall) is September (54mm).
Average rainfall days in December
Vionnaz, Switzerland
- Average rainfall days in December: 15.8 days
The month with the highest number of rainy days is May (23.5 days).
The month with the least rainy days is October (13.3 days).
Average snowfall in December
Vionnaz, Switzerland
- Average snowfall in December: 114mm
The month with the highest snowfall is January (148mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in December
Vionnaz, Switzerland
- Average snowfall days in December: 5.8 days
The month with the highest number of snowfall days is February (8.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Vionnaz, 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: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in December
Vionnaz, Switzerland
- Average sunshine days in December: 12.6 days
The month with the most sunshine days is October (15 days).
The month with the least sunshine days is May (4.3 days).
Average UV index in December
Vionnaz, Switzerland
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Vionnaz, Switzerland
- Average cloud cover in December: 42
The months with the most cloud cover are January, February, March, May and December (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Vionnaz, Switzerland
- Average visibility in December: 8km
The months with the highest visibility are October and November (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and December (8km).
Vionnaz, Switzerland
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