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
The advent of December brings a slight shift in average high-temperature, moving from a frosty 46.9°F in November to an icy 39.6°F. During December, Aarau consistently records a temperature low averaging a subzero cold 28.9°F.Humidity
In December, the average relative humidity is 86%.Rainfall
In December, the rain falls for 15.2 days. Throughout December, 3.19" of precipitation is accumulated. In Aarau, during the entire year, the rain falls for 190.8 days and collects up to 34.65" of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, in Aarau, it is snowing for 7.9 days. Throughout December, 5.63" of snow is accumulated. In Aarau, during the entire year, snow falls for 39.9 days and aggregates up to 25.67" of snow.Daylight
December has the shortest days of the year, with an average of 8h and 30min of daylight.On the first day of December, sunrise is at 07:54 and sunset at 16:39. On the last day of the month, sunrise is at 08:15 and sunset at 16:47 CET.
Sunshine
December has the least sunshine of the year, with an average of 5h of sunshine.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Aarau. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Consider this! The reflection from snow can almost 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 does it get in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December in Aarau?
When is the sunrise / sunset in December in Aarau?
What is the month with the least sunshine?
How many hours of sunshine does Aarau have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Aarau, Switzerland
- Average high temperature in December: 39.6°F
The warmest months (with the highest average high temperature) are July and August (73.9°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in December: 28.9°F
The months with the highest average low temperature are July and August (53.2°F).
The coldest month (with the lowest average low temperature) is February (25.9°F).
Average pressure in December
Aarau, Switzerland
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is December (30.15"Hg).
The month with the lowest atmospheric pressure is April (29.99"Hg).
Average wind speed in December
Aarau, Switzerland
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is March (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity in December
Aarau, Switzerland
- Average humidity in December: 86%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and July (78%).
Average rainfall in December
Aarau, Switzerland
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is September (1.77").
Average rainfall days in December
Aarau, Switzerland
- Average rainfall days in December: 15.2 days
The month with the highest number of rainy days is May (22.4 days).
The month with the least rainy days is February (10.6 days).
Average snowfall in December
Aarau, Switzerland
- Average snowfall in December: 5.63"
The month with the highest snowfall is February (6.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Aarau, Switzerland
- Average snowfall days in December: 7.9 days
The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Aarau, 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 0min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Aarau, Switzerland
- Average sunshine days in December: 12.4 days
The month with the most sunshine days is October (15 days).
The month with the least sunshine days is May (6.6 days).
Average UV index in December
Aarau, 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, October, November and December (UV index 2).
Average cloud cover in December
Aarau, Switzerland
- Average cloud cover in December: 48
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Aarau, Switzerland
- Average visibility in December: 5mi
The months with the highest visibility are March, April, July and August (6mi).
The months with the lowest visibility are January, February, May, June, September, October, November and December (5mi).
