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
December
Weather in December
Temperature
December brings a slight decrease in the average high-temperature, shifting from a chilly 8.2°C (46.8°F) in November to an icy 4.2°C (39.6°F). Throughout December, Twann experiences a low-temperature average of -1.5°C (29.3°F).Humidity
In Twann, the average relative humidity in December is 85%.Rainfall
In December, in Twann, the rain falls for 14.9 days. Throughout December, 95mm (3.74") of precipitation is accumulated. Throughout the year, there are 195.6 rainfall days, and 870mm (34.25") of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. In Twann, during December, snow falls for 7.5 days and regularly aggregates up to 123mm (4.84") of snow. In Twann, during the entire year, snow falls for 37.6 days and aggregates up to 557mm (21.93") of snow.Daylight
December has the shortest days of the year, with an average of 8h and 36min of daylight.On the first day of December in Twann, sunrise is at 07:57 and sunset at 16:43. On the last day of the month, sunrise is at 08:17 and sunset at 16:51 CET.
Sunshine
The month with the least sunshine in Twann is December, with an average of 4.9h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Twann in December?
What is the average humidity in December in Twann?
How many days does it rain in December in Twann?
How much does it snow in Twann in December?
What is the month with the shortest days in Twann?
How many hours of daylight does Twann have in December?
What time are sunrise and sunset in December in Twann?
What is the month with the least sunshine in Twann?
How long on average sun shines in December in Twann?
What are the months with the lowest UV index in Twann?
What is the UV index reading in December in Twann?
Average temperature in December
Twann, Switzerland
- Average high temperature in December: 4.2°C
The warmest month (with the highest average high temperature) is July (23.1°C).
The month with the lowest average high temperature is January (2.7°C).
- Average low temperature in December: -1.5°C
The month with the highest average low temperature is July (11.9°C).
The coldest months (with the lowest average low temperature) are January and February (-2.8°C).
Average pressure in December
Twann, 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 (1015.6mbar).
Average wind speed in December
Twann, Switzerland
- Average wind speed in December: 9.9km/h
The windiest month (with the highest average wind speed) is February (10.2km/h).
The calmest month (with the lowest average wind speed) is August (6.3km/h).
Average humidity in December
Twann, Switzerland
- Average humidity in December: 85%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April, July and August (79%).
Average rainfall in December
Twann, Switzerland
- Average rainfall in December: 95mm
The wettest month (with the highest rainfall) is June (97mm).
The driest month (with the least rainfall) is September (46mm).
Average rainfall days in December
Twann, Switzerland
- Average rainfall days in December: 14.9 days
The month with the highest number of rainy days is May (21.9 days).
The month with the least rainy days is February (12.3 days).
Average snowfall in December
Twann, Switzerland
- Average snowfall in December: 123mm
The month with the highest snowfall is February (133mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in December
Twann, Switzerland
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Twann, 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 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Twann, Switzerland
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is October (14.1 days).
The month with the least sunshine days is May (6.7 days).
Average UV index in December
Twann, Switzerland
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Twann, Switzerland
- Average cloud cover in December: 49
The months with the most cloud cover are January, February and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Twann, Switzerland
- Average visibility in December: 8km
The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).
