December weather forecastWinterthur, Switzerland
December
Weather in December
December in Winterthur invokes a winter wonderland image, as temperatures plunge between -1.8°C (28.8°F) and 4.2°C (39.6°F). Highest rainfall in the year is noted, standing at 82mm (3.23"). Snowfall graces the city once more, bringing with it the charm of winter holidays. Despite the reduced daylight hours, the festive sight of Winterthur aglow with Christmas lights offers a heartwarming close to the year.Temperature
Winterthur experiences a moderate temperature shift at the start of December, with average high-temperatures adjusting a bit from a chilly 8.7°C (47.7°F) in November to a wintry 4.2°C (39.6°F). The average temperature drops to a subzero cold -1.8°C (28.8°F) during the night in the month of December.Humidity
In December, the average relative humidity in Winterthur is 87%.Rainfall
December is the month with the most rainfall. Rain falls for 13.9 days and accumulates 82mm (3.23") of precipitation.Snowfall
January through May, October through December are months with snowfall in Winterthur. In Winterthur, Switzerland, in December, snow falls for 8.1 days, with typically accumulated 168mm (6.61") of snow. Throughout the year, there are 42.6 snowfall days, and 729mm (28.7") of snow is accumulated.Daylight
With an average of 8h and 30min of daylight, December has the shortest days of the year.On the first day of December in Winterthur, sunrise is at 07:52 and sunset at 16:36. On the last day of the month, sunrise is at 08:12 and sunset at 16:43 CET.
Sunshine
In December, the average sunshine in Winterthur is 4.6h.UV index
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Winterthur. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Winterthur, Switzerland
- Average high temperature in December: 4.2°C
The warmest month (with the highest average high temperature) is July (24.6°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in December: -1.8°C
The months with the highest average low temperature are July and August (12.1°C).
The coldest month (with the lowest average low temperature) is January (-3.3°C).
Average pressure in December
Winterthur, 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
Winterthur, Switzerland
- Average wind speed in December: 7.8km/h
The windiest month (with the highest average wind speed) is March (8.8km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in December
Winterthur, Switzerland
- Average humidity in December: 87%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and July (76%).
Average rainfall in December
Winterthur, Switzerland
- Average rainfall in December: 82mm
The wettest month (with the highest rainfall) is December (82mm).
The driest month (with the least rainfall) is September (29mm).
Average rainfall days in December
Winterthur, Switzerland
- Average rainfall days in December: 13.9 days
The month with the highest number of rainy days is May (18.4 days).
The months with the least rainy days are September and November (9.9 days).
Average snowfall in December
Winterthur, Switzerland
- Average snowfall in December: 168mm
The month with the highest snowfall is January (182mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Winterthur, Switzerland
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Winterthur, Switzerland
- Average daylight in December: 8h and 30min
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 36min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Winterthur, Switzerland
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is February (11.1 days).
Average UV index in December
Winterthur, Switzerland
- Average UV index in December: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Winterthur, Switzerland
- Average cloud cover in December: 53
The months with the most cloud cover are January and February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Winterthur, Switzerland
- Average visibility in December: 8km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January and February (7km).
