December weather forecast
Wassen, Switzerland

December

Weather in December

December, the first month of the winter in Wassen, is also a subzero cold month, with an average temperature varying between -9.4°C (15.1°F) and -1.9°C (28.6°F).

Temperature

December is characterized by a mild reduction in the average high-temperature, from a cold 1.5°C (34.7°F) in November to a subzero cold -1.9°C (28.6°F). In December, Wassen records an average nighttime temperature of -9.4°C (15.1°F).

Humidity

In December, the average relative humidity is 87%.

Rainfall

In Wassen, Switzerland, in December, it is raining for 4.2 days, with typically 134mm (5.28") of accumulated precipitation. In Wassen, during the entire year, the rain falls for 172.4 days and collects up to 1583mm (62.32") of precipitation.

Snowfall

January through December are months with snowfall. December is the month with the most snowfall. Snow falls for 20 days and accumulates 1086mm (42.76") 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 07:49 and sunset at 16:39. On the last day of December, sunrise is at 08:10 and sunset at 16:47 CET.

Sunshine

January and December, with an average of 4.6h of sunshine, are months with the least sunshine.

UV index

In Wassen, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.
Note: The UV index of 2 during December translates into the following guidance:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The solar radiation around mid-day is intense; avoid the Sun and stay safe. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.

Frequently asked questions

How cold is it in Wassen in December?
In December, in Wassen, the average high-temperature is -1.9°C (28.6°F), and the average low-temperature is -9.4°C (15.1°F).
What is the average humidity in December in Wassen?
In December, the average relative humidity in Wassen is 87%.
How many days does it rain in December in Wassen?
In Wassen, Switzerland, in December, it is raining for 4.2 days, with typically 134mm (5.28") of accumulated precipitation.
When does it snow the most in Wassen?
The month with the most snowfall in Wassen, Switzerland, is December, when snow falls for 20 days and typically aggregates up to 1086mm (42.76") of snow.
How many days does it snow in December in Wassen?
In December, it is snowing for 20 days. Throughout December, 1086mm (42.76") of snow is accumulated.
What is the month with the shortest days in Wassen?
December has the shortest days of the year, with an average of 8h and 36min of daylight.
What is the average length of the day in December in Wassen?
In Wassen, Switzerland, the average day length in December is 8h and 38min.
When are sunrise and sunset in December in Wassen?
In December, on the first day of the month, sunrise is at 07:49 and sunset at 16:39. On the last day of the month, in Wassen, sunrise is at 08:10 and sunset at 16:47 CET.
What is the month with the least sunshine in Wassen?
The months with the least sunshine in Wassen are January and December, with an average of 4.6h of sunshine.
How long on average sun shines in December in Wassen?
The average sunshine duration in December in Wassen, Switzerland, is 4.6h.
What is the UV index reading in December in Wassen?
In Wassen, Switzerland, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from exposure to the Sun's UV radiation.
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
Wassen, Switzerland
  • Average high temperature in December: -1.9°C

The warmest months (with the highest average high temperature) are July and August (16.3°C).
The month with the lowest average high temperature is January (-3.3°C).

  • Average low temperature in December: -9.4°C

The month with the highest average low temperature is July (6.6°C).
The coldest month (with the lowest average low temperature) is February (-11.1°C).

Average pressure in December
Wassen, 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 (1015.4mbar).

Average wind speed in December
Wassen, 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 (6km/h).

Average humidity in December
Wassen, Switzerland
  • Average humidity in December: 87%

The month with the highest relative humidity is March (93%).
The months with the lowest relative humidity are July and August (82%).

Average rainfall in December
Wassen, Switzerland
  • Average rainfall in December: 134mm

The wettest month (with the highest rainfall) is August (201mm).
The driest month (with the least rainfall) is February (78mm).

Average rainfall days in December
Wassen, Switzerland
  • Average rainfall days in December: 4.2 days

The month with the highest number of rainy days is July (27.1 days).
The month with the least rainy days is December (4.2 days).

Average snowfall in December
Wassen, Switzerland
  • Average snowfall in December: 1086mm

The month with the highest snowfall is December (1086mm).
The month with the least snowfall is July (23mm).

Average snowfall days in December
Wassen, Switzerland
  • Average snowfall days in December: 20 days

The month with the highest number of snowfall days is March (23.1 days).
The month with the least snowfall days is July (0.8 days).

Average daylight in December /
Average sunshine in December
Wassen, 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 4min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).

Average sunshine days in December
Wassen, Switzerland
  • Average sunshine days in December: 11.1 days

The month with the most sunshine days is October (12.5 days).
The month with the least sunshine days is June (2.4 days).

Average UV index in December
Wassen, 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, February, March, April and November (UV index 1).

Average cloud cover in December
Wassen, Switzerland
  • Average cloud cover in December: 52

The months with the most cloud cover are February, March and May (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 43).

Average visibility in December
Wassen, Switzerland
  • Average visibility in December: 7km

The months with the highest visibility are June, July and August (8km).
The month with the lowest visibility is January (5km).

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