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
A minor decrease in the average high-temperature is observed during December, shifting from a chilly 8.6°C (47.5°F) in November to a wintry 4.1°C (39.4°F). Heiden records an average low of -1.4°C (29.5°F) throughout the nights in December.Humidity
In December, the average relative humidity in Heiden is 82%.Rainfall
In Heiden, Switzerland, in December, it is raining for 11.7 days, with typically 97mm (3.82") of accumulated precipitation. Throughout the year, there are 177.8 rainfall days, and 1006mm (39.61") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Heiden, 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
With an average of 8h and 30min of daylight, December has the shortest days of the year in Heiden, Switzerland.On the first day of December, sunrise is at 07:48 and sunset at 16:33. On the last day of the month, sunrise is at 08:09 and sunset at 16:40 CET.
Sunshine
February and December, with an average of 5.1h of sunshine, are months with the least sunshine in Heiden.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 value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 2 in December leads to these guidelines:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Heiden in December?
What is the average humidity in December in Heiden?
How much does it rain in Heiden in December?
How many days does it snow in December in Heiden?
What is the month with the shortest days in Heiden?
What is the average length of the day in December in Heiden?
When are sunrise and sunset in December in Heiden?
What are the months with the least sunshine in Heiden?
How many hours of sunshine does Heiden have in December?
What is the month with the lowest UV index in Heiden?
What is the UV index reading in December in Heiden?
Average temperature in December
Heiden, 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
Heiden, 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
Heiden, 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
Heiden, 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
Heiden, 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
Heiden, 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
Heiden, 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
Heiden, 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
Heiden, 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
Heiden, 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
Heiden, 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
Heiden, 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
Heiden, 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).
