December weather forecastCertara, Switzerland
December
Weather in December
December, the first month of the winter in Certara, is still a cold month, with an average temperature fluctuating between 5.4°C (41.7°F) and -1.6°C (29.1°F).Temperature
The arrival of December suggests a slight decrease in the average high-temperature, moving from a frosty 9.1°C (48.4°F) in November to a wintry 5.4°C (41.7°F). In December, the recorded average low-temperature in Certara, Switzerland, is a subzero cold -1.6°C (29.1°F).Humidity
In Certara, Switzerland, the average relative humidity in December is 73%.Rainfall
In Certara, in December, it is raining for 4.1 days, with typically 17mm (0.67") of accumulated precipitation. In Certara, during the entire year, the rain falls for 102.6 days and collects up to 414mm (16.3") of precipitation.Snowfall
January through March, November and December are months with snowfall. In Certara, in December, during 0.7 snowfall days, 3mm (0.12") of snow is typically accumulated. In Certara, during the entire year, snow falls for 4 days and aggregates up to 23mm (0.91") of snow.Daylight
December has the shortest days of the year in Certara, Switzerland, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 07:45 and sunset at 16:39. On the last day of the month, sunrise is at 08:05 and sunset at 16:48 CET.
Sunshine
In December, the average sunshine in Certara is 6.3h.UV index
The months with the lowest UV index in Certara are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Certara, Switzerland
- Average high temperature in December: 5.4°C
The warmest month (with the highest average high temperature) is July (25.2°C).
The month with the lowest average high temperature is January (4.5°C).
- Average low temperature in December: -1.6°C
The months with the highest average low temperature are July and August (12.8°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).
Average pressure in December
Certara, Switzerland
- Average pressure in December: 1020.5mbar
The month with the highest atmospheric pressure is December (1020.5mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in December
Certara, Switzerland
- Average wind speed in December: 7.1km/h
The windiest month (with the highest average wind speed) is July (7.7km/h).
The calmest month (with the lowest average wind speed) is November (6.1km/h).
Average humidity in December
Certara, Switzerland
- Average humidity in December: 73%
The month with the highest relative humidity is November (80%).
The months with the lowest relative humidity are January and July (72%).
Average rainfall in December
Certara, Switzerland
- Average rainfall in December: 17mm
The wettest month (with the highest rainfall) is November (70mm).
The driest month (with the least rainfall) is January (7mm).
Average rainfall days in December
Certara, Switzerland
- Average rainfall days in December: 4.1 days
The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is December (4.1 days).
Average snowfall in December
Certara, Switzerland
- Average snowfall in December: 3mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Certara, Switzerland
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is January (1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Certara, Switzerland
- Average daylight in December: 8h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 6h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 18min).
Average sunshine days in December
Certara, Switzerland
- Average sunshine days in December: 25.8 days
The month with the most sunshine days is December (25.8 days).
The month with the least sunshine days is June (16.9 days).
Average UV index in December
Certara, Switzerland
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Certara, Switzerland
- Average cloud cover in December: 30
The month with the most cloud cover is November (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility in December
Certara, Switzerland
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, November and December (9km).
The month with the lowest visibility is October (8km).
