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 reveals a small adjustment in temperature, transitioning from an average high of a frosty 8.6°C (47.5°F) in November to an icy 4.1°C (39.4°F). Alterswilen experiences a steady low-temperature of -1.4°C (29.5°F) throughout December.Humidity
In December, the average relative humidity is 82%.Rainfall
In Alterswilen, in December, it is raining for 11.7 days, with typically 97mm (3.82") of accumulated precipitation. Throughout the year, in Alterswilen, there are 177.8 rainfall days, and 1006mm (39.61") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Alterswilen, during December, snow falls for 11.2 days and regularly aggregates up to 261mm (10.28") of snow. Throughout the year, there are 55.7 snowfall days, and 1345mm (52.95") of snow is accumulated.Daylight
The month with the shortest days in Alterswilen, Switzerland, is December, with an average of 8h and 30min of daylight.On the first day of December, sunrise is at 07:51 and sunset at 16:34. On the last day of the month, sunrise is at 08:11 and sunset at 16:41 CET.
Sunshine
The months with the least sunshine in Alterswilen are February and December, with an average of 5.1h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Alterswilen?
What is the average humidity in December in Alterswilen?
How many days does it rain in December in Alterswilen?
How many days does it snow in December in Alterswilen?
What is the month with the shortest days in Alterswilen?
How many hours of daylight does Alterswilen have in December?
When is the sunrise / sunset in December in Alterswilen?
What is the month with the least sunshine in Alterswilen?
How many hours of sunshine does Alterswilen have in December?
When is the lowest UV index in Alterswilen?
How high is the UV index in December in Alterswilen?
Average temperature in December
Alterswilen, Switzerland
- Average high temperature in December: 4.1°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 (2.9°C).
- Average low temperature in December: -1.4°C
The months with the highest average low temperature are July and August (12.6°C).
The coldest month (with the lowest average low temperature) is January (-2.9°C).
Average pressure in December
Alterswilen, Switzerland
- Average pressure in December: 1020.8mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in December
Alterswilen, Switzerland
- Average wind speed in December: 8.6km/h
The windiest month (with the highest average wind speed) is March (9km/h).
The calmest month (with the lowest average wind speed) is August (6.7km/h).
Average humidity in December
Alterswilen, Switzerland
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (75%).
Average rainfall in December
Alterswilen, Switzerland
- Average rainfall in December: 97mm
The wettest month (with the highest rainfall) is August (126mm).
The driest month (with the least rainfall) is April (52mm).
Average rainfall days in December
Alterswilen, Switzerland
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is July (20.8 days).
The month with the least rainy days is February (9.5 days).
Average snowfall in December
Alterswilen, Switzerland
- Average snowfall in December: 261mm
The month with the highest snowfall is January (353mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Alterswilen, Switzerland
- Average snowfall days in December: 11.2 days
The month with the highest number of snowfall days is February (12.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Alterswilen, Switzerland
- Average daylight in December: 8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 5h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Alterswilen, Switzerland
- Average sunshine days in December: 12.2 days
The month with the most sunshine days is October (17.2 days).
The month with the least sunshine days is July (6.6 days).
Average UV index in December
Alterswilen, 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
Alterswilen, Switzerland
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Alterswilen, Switzerland
- Average visibility in December: 8km
The months with the highest visibility are April, May, June, July, August, October and November (9km).
The months with the lowest visibility are January, February, March, September and December (8km).
