December weather forecast
Wengen, Switzerland

December

Weather in December

December, the first month of the winter in Wengen, is still a freezing cold month, with an average temperature fluctuating between -10.8°C (12.6°F) and -1.5°C (29.3°F).

Temperature

Wengen's transition into December involves a gentle shift in temperature, receding from a cold 1.8°C (35.2°F) in November to a subzero cold -1.5°C (29.3°F). Wengen's nights in December cool down to an average low-temperature of -10.8°C (12.6°F).

Humidity

The average relative humidity in December is 87%.

Rainfall

In Wengen, during December, the rain falls for 5.5 days and regularly aggregates up to 55mm (2.17") of precipitation. Throughout the year, in Wengen, there are 154.5 rainfall days, and 696mm (27.4") of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall. The months with the most snowfall are January, November and December, with an average 239mm (9.41") of accumulated 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 07:52 and sunset at 16:42. On the last day of December, sunrise is at 08:12 and sunset at 16:50 CET.

Sunshine

The average sunshine in December is 4.2h.

UV index

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In December, the maximum UV index of 2 suggests this advice:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. 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 it in December?
The high-temperature during December is -1.5°C (29.3°F) and the low-temperature is -10.8°C (12.6°F).
What is the average humidity in December?
The average relative humidity in December is 87%.
How much does it rain in December?
In Wengen, during December, the rain falls for 5.5 days and regularly aggregates up to 55mm (2.17") of precipitation.
When does it snow the most?
The months with the most snowfall are January, November and December, with an average 239mm (9.41") of accumulated snow.
How much does it snow in December?
In December, it is snowing for 14.5 days. Throughout December, 239mm (9.41") of snow is accumulated.
What is the month with the shortest days?
With an average of 8h and 36min of daylight, December has the shortest days of the year.
What is the average length of the day in December?
The average day length in December in Wengen is 8h and 38min.
What time are sunrise and sunset in December?
In December, on the first day of the month, sunrise is at 07:52 and sunset at 16:42. On the last day of the month, sunrise is at 08:12 and sunset at 16:50 CET.
How long on average sun shines in December?
The average sunshine duration in December is 4.2h.
What is the UV index reading in December?
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - Wengen, Switzerland
Average temperature in December
Wengen, Switzerland
  • Average high temperature in December: -1.5°C

The warmest month (with the highest average high temperature) is August (16°C).
The month with the lowest average high temperature is January (-2.7°C).

  • Average low temperature in December: -10.8°C

The months with the highest average low temperature are July and August (5.8°C).
The coldest month (with the lowest average low temperature) is February (-12.1°C).

Average pressure in December - Wengen, Switzerland
Average pressure in December
Wengen, 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 (1015.4mbar).

Average wind speed in December - Wengen, Switzerland
Average wind speed in December
Wengen, Switzerland
  • Average wind speed in December: 8.7km/h

The windiest month (with the highest average wind speed) is December (8.7km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).

Average humidity in December - Wengen, Switzerland
Average humidity in December
Wengen, Switzerland
  • Average humidity in December: 87%

The month with the highest relative humidity is March (92%).
The months with the lowest relative humidity are July and August (83%).

Average rainfall in December - Wengen, Switzerland
Average rainfall in December
Wengen, Switzerland
  • Average rainfall in December: 55mm

The wettest month (with the highest rainfall) is June (92mm).
The driest month (with the least rainfall) is February (33mm).

Average rainfall days in December - Wengen, Switzerland
Average rainfall days in December
Wengen, Switzerland
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is February (3.3 days).

Average snowfall in December - Wengen, Switzerland
Average snowfall in December
Wengen, Switzerland
  • Average snowfall in December: 239mm

The months with the highest snowfall are January, November and December (239mm).
The months with the least snowfall are July and August (0mm).

Average snowfall days in December - Wengen, Switzerland
Average snowfall days in December
Wengen, Switzerland
  • Average snowfall days in December: 14.5 days

The month with the highest number of snowfall days is January (17.4 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December / Average sunshine in December - Wengen, Switzerland
Average daylight in December /
Average sunshine in December
Wengen, 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: 4h and 1min

The months with the most sunshine are July and August (Average sunshine: 9h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

Average sunshine days in December - Wengen, Switzerland
Average sunshine days in December
Wengen, Switzerland
  • Average sunshine days in December: 14 days

The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is July (5.1 days).

Average UV index in December - Wengen, Switzerland
Average UV index in December
Wengen, 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 and November (UV index 1).

Average cloud cover in December - Wengen, Switzerland
Average cloud cover in December
Wengen, Switzerland
  • Average cloud cover in December: 55

The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 46).

Average visibility in December - Wengen, Switzerland
Average visibility in December
Wengen, Switzerland
  • Average visibility in December: 7km

The months with the highest visibility are June, July, August, September, October, November and December (7km).
The months with the lowest visibility are January, February, March, April and May (6km).

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