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
Weather in December
Temperature
As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a frosty 8.3°C (46.9°F) to a cold 4.8°C (40.6°F). In December, the temperature drops to an average of -0.5°C (31.1°F) at night.Humidity
In Porrentruy, the average relative humidity in December is 86%.Rainfall
In Porrentruy, in December, during 12.9 rainfall days, 93mm (3.66") of precipitation is typically accumulated. In Porrentruy, during the entire year, the rain falls for 188.6 days and collects up to 818mm (32.2") of precipitation.Snowfall
January through May, October through December are months with snowfall in Porrentruy. In Porrentruy, Switzerland, during December, snow falls for 10.1 days and regularly aggregates up to 151mm (5.94") of snow. In Porrentruy, Switzerland, during the entire year, snow falls for 49 days and aggregates up to 745mm (29.33") of snow.Daylight
With an average of 8h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:58 and sunset at 16:43. On the last day of December, in Porrentruy, sunrise is at 08:18 and sunset at 16:50 CET.
Sunshine
With an average of 4.4h of sunshine, December has the least sunshine of the year in Porrentruy.UV index
January, February, October through 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 low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 2 in December interprets 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. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
Is December cold in Porrentruy?
What is the average humidity in December in Porrentruy?
How many days does it rain in December in Porrentruy?
How much does it snow in Porrentruy in December?
What is the month with the shortest days in Porrentruy?
What is the average length of the day in December in Porrentruy?
When is the sunrise / sunset in December in Porrentruy?
What is the month with the least sunshine in Porrentruy?
How long on average sun shines in December in Porrentruy?
What are the months with the lowest UV index in Porrentruy?
What is the UV index reading in December in Porrentruy?
Average temperature in December
Porrentruy, Switzerland
- Average high temperature in December: 4.8°C
The warmest months (with the highest average high temperature) are July and August (22.8°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in December: -0.5°C
The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-2°C).
Average pressure in December
Porrentruy, Switzerland
- Average pressure in December: 1020.8mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The months with the lowest atmospheric pressure are April and November (1015.7mbar).
Average wind speed in December
Porrentruy, Switzerland
- Average wind speed in December: 12km/h
The windiest month (with the highest average wind speed) is February (12.3km/h).
The calmest month (with the lowest average wind speed) is August (7.7km/h).
Average humidity in December
Porrentruy, Switzerland
- Average humidity in December: 86%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (80%).
Average rainfall in December
Porrentruy, Switzerland
- Average rainfall in December: 93mm
The wettest month (with the highest rainfall) is June (94mm).
The driest month (with the least rainfall) is September (40mm).
Average rainfall days in December
Porrentruy, Switzerland
- Average rainfall days in December: 12.9 days
The month with the highest number of rainy days is June (20.9 days).
The month with the least rainy days is February (10.6 days).
Average snowfall in December
Porrentruy, Switzerland
- Average snowfall in December: 151mm
The month with the highest snowfall is February (170mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Porrentruy, Switzerland
- Average snowfall days in December: 10.1 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Porrentruy, 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: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 24min).
Average sunshine days in December
Porrentruy, Switzerland
- Average sunshine days in December: 12 days
The month with the most sunshine days is October (14.8 days).
The month with the least sunshine days is June (6.7 days).
Average UV index in December
Porrentruy, 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
Porrentruy, Switzerland
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Porrentruy, 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).
Porrentruy, Switzerland
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