December weather forecastRiveo, Switzerland
December
Weather in December
December, the first month of the winter in Riveo, is still a cold month, with temperature in the range of an average high of 2°C (35.6°F) and an average low of -4.6°C (23.7°F).Temperature
December witnesses a gentle descent in average high-temperature, descending from November's cold 5.5°C (41.9°F) to a still wintry 2°C (35.6°F). Riveo records a consistent low-temperature of -4.6°C (23.7°F) during December nights.Humidity
In December, the average relative humidity in Riveo is 78%.Rainfall
In Riveo, during December, the rain falls for 8.6 days and regularly aggregates up to 70mm (2.76") of precipitation. In Riveo, Switzerland, during the entire year, the rain falls for 200.8 days and collects up to 1253mm (49.33") of precipitation.Snowfall
Months with snowfall in Riveo are January through May, October through December. In Riveo, Switzerland, during December, snow falls for 12.2 days and regularly aggregates up to 260mm (10.24") of snow. Throughout the year, in Riveo, Switzerland, there are 63.5 snowfall days, and 1500mm (59.06") of snow is accumulated.Daylight
The month with the shortest days in Riveo is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 07:48 and sunset at 16:40. On the last day of December, in Riveo, sunrise is at 08:08 and sunset at 16:48 CET.
Sunshine
The average sunshine in December in Riveo is 6.3h.UV index
The months with the lowest UV index in Riveo are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: In December, the UV index of 2 transforms into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Riveo, Switzerland
- Average high temperature in December: 2°C
The warmest month (with the highest average high temperature) is July (21.2°C).
The month with the lowest average high temperature is January (0.9°C).
- Average low temperature in December: -4.6°C
The month with the highest average low temperature is August (10.6°C).
The coldest month (with the lowest average low temperature) is January (-5.9°C).
Average pressure in December
Riveo, Switzerland
- Average pressure in December: 1020.6mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is April (1015.1mbar).
Average wind speed in December
Riveo, Switzerland
- Average wind speed in December: 7.2km/h
The windiest month (with the highest average wind speed) is February (7.4km/h).
The calmest month (with the lowest average wind speed) is November (5.8km/h).
Average humidity in December
Riveo, Switzerland
- Average humidity in December: 78%
The month with the highest relative humidity is November (83%).
The month with the lowest relative humidity is July (76%).
Average rainfall in December
Riveo, Switzerland
- Average rainfall in December: 70mm
The wettest month (with the highest rainfall) is November (164mm).
The driest month (with the least rainfall) is January (45mm).
Average rainfall days in December
Riveo, Switzerland
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is July (25.5 days).
The months with the least rainy days are February and December (8.6 days).
Average snowfall in December
Riveo, Switzerland
- Average snowfall in December: 260mm
The month with the highest snowfall is November (334mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Riveo, Switzerland
- Average snowfall days in December: 12.2 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Riveo, 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 18min).
The month with the least sunshine is November (Average sunshine: 5h and 24min).
Average sunshine days in December
Riveo, Switzerland
- Average sunshine days in December: 13.8 days
The month with the most sunshine days is October (14.9 days).
The month with the least sunshine days is June (3.1 days).
Average UV index in December
Riveo, 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, October, November and December (UV index 2).
Average cloud cover in December
Riveo, Switzerland
- Average cloud cover in December: 31
The month with the most cloud cover is November (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Riveo, Switzerland
- Average visibility in December: 9km
The months with the highest visibility are April, May, June, July, August and December (9km).
The months with the lowest visibility are January, February, March, September, October and November (8km).
