December weather forecastOnex, Switzerland
December
Weather in December
December, the first month of the winter in Onex, is also a wintry month, with an average temperature fluctuating between -1.5°C (29.3°F) and 4.4°C (39.9°F).Temperature
As December arrives, Onex's weather displays a minor decrease in high-temperatures, transitioning from November's chilly 8.3°C (46.9°F) to a cold 4.4°C (39.9°F). During the month of December, Onex experiences a steady low-temperature average of -1.5°C (29.3°F).Humidity
In December, the average relative humidity in Onex is 85%.Rainfall
In Onex, in December, during 14.1 rainfall days, 82mm (3.23") of precipitation is typically accumulated. Throughout the year, there are 190.1 rainfall days, and 748mm (29.45") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. The month with the most snowfall is December, when snow falls for 4.7 days and typically aggregates up to 81mm (3.19") of snow.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 07:58 and sunset at 16:51. On the last day of December, sunrise is at 08:18 and sunset at 16:59 CET.
Sunshine
The month with the least sunshine in Onex is December, with an average of 4.9h of sunshine.UV index
The months with the lowest UV index in Onex are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: An average UV index of 2 in December transforms into this advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Onex, Switzerland
- Average high temperature in December: 4.4°C
The warmest month (with the highest average high temperature) is July (22.7°C).
The month with the lowest average high temperature is January (2.7°C).
- Average low temperature in December: -1.5°C
The month with the highest average low temperature is July (11.7°C).
The coldest month (with the lowest average low temperature) is February (-3.4°C).
Average pressure in December
Onex, Switzerland
- Average pressure in December: 1021.2mbar
The month with the highest atmospheric pressure is December (1021.2mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in December
Onex, Switzerland
- Average wind speed in December: 9.2km/h
The windiest month (with the highest average wind speed) is February (9.5km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in December
Onex, Switzerland
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, July and August (79%).
Average rainfall in December
Onex, Switzerland
- Average rainfall in December: 82mm
The wettest month (with the highest rainfall) is June (86mm).
The driest month (with the least rainfall) is October (41mm).
Average rainfall days in December
Onex, Switzerland
- Average rainfall days in December: 14.1 days
The month with the highest number of rainy days is May (20.3 days).
The month with the least rainy days is February (11.7 days).
Average snowfall in December
Onex, Switzerland
- Average snowfall in December: 81mm
The month with the highest snowfall is December (81mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Onex, Switzerland
- Average snowfall days in December: 4.7 days
The months with the highest number of snowfall days are January and February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Onex, 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: 4h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Onex, Switzerland
- Average sunshine days in December: 13.1 days
The month with the most sunshine days is October (15.9 days).
The month with the least sunshine days is June (7.7 days).
Average UV index in December
Onex, 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, March, November and December (UV index 2).
Average cloud cover in December
Onex, Switzerland
- Average cloud cover in December: 49
The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Onex, Switzerland
- Average visibility in December: 8km
The months with the highest visibility are March and April (9km).
The months with the lowest visibility are January, February, May, June, July, August, September, October, November and December (8km).
