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
December
Weather in December
Temperature
As November makes way for December, Isola's average high-temperature eases from a wintry 0.4°C (32.7°F) to a subzero cold -3.2°C (26.2°F). December nights in Isola experience a consistent temperature drop to an extreme cold -12.7°C (9.1°F).Humidity
In Isola, Switzerland, the average relative humidity in December is 87%.Rainfall
In December, the rain falls for 2.6 days. Throughout December, 34mm (1.34") of precipitation is accumulated. Throughout the year, there are 139.9 rainfall days, and 641mm (25.24") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Isola. In Isola, in December, during 12.9 snowfall days, 250mm (9.84") of snow is typically accumulated. Throughout the year, in Isola, there are 97.2 snowfall days, and 1956mm (77.01") of snow is accumulated.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:44 and sunset at 16:36. On the last day of December, sunrise is at 08:04 and sunset at 16:44 CET.
Sunshine
The average sunshine in December is 4.7h.UV index
In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 2 translates into these guidelines:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Isola in December?
What is the average humidity in December in Isola?
How much does it rain in Isola in December?
How many days does it snow in December in Isola?
What is the month with the shortest days in Isola?
What is the average length of the day in December in Isola?
When is the sunrise / sunset in December in Isola?
How long on average sun shines in December in Isola?
What is the UV index intensity in December in Isola?
Average temperature in December
Isola, Switzerland
- Average high temperature in December: -3.2°C
The warmest month (with the highest average high temperature) is July (15.4°C).
The month with the lowest average high temperature is January (-4.4°C).
- Average low temperature in December: -12.7°C
The month with the highest average low temperature is August (5°C).
The coldest month (with the lowest average low temperature) is January (-13.9°C).
Average pressure in December
Isola, 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 (1015.3mbar).
Average wind speed in December
Isola, Switzerland
- Average wind speed in December: 9.9km/h
The windiest months (with the highest average wind speed) are February and December (9.9km/h).
The calmest month (with the lowest average wind speed) is August (7.5km/h).
Average humidity in December
Isola, Switzerland
- Average humidity in December: 87%
The month with the highest relative humidity is April (94%).
The month with the lowest relative humidity is July (81%).
Average rainfall in December
Isola, Switzerland
- Average rainfall in December: 34mm
The wettest month (with the highest rainfall) is November (84mm).
The driest month (with the least rainfall) is January (20mm).
Average rainfall days in December
Isola, Switzerland
- Average rainfall days in December: 2.6 days
The month with the highest number of rainy days is July (22.6 days).
The month with the least rainy days is December (2.6 days).
Average snowfall in December
Isola, Switzerland
- Average snowfall in December: 250mm
The month with the highest snowfall is November (492mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Isola, Switzerland
- Average snowfall days in December: 12.9 days
The month with the highest number of snowfall days is March (17 days).
The month with the least snowfall days is August (0 days).
Average daylight in December /
Average sunshine in December
Isola, Switzerland
- Average daylight in December: 8h and 4min
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 4min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is November (Average sunshine: 3h and 54min).
Average sunshine days in December
Isola, Switzerland
- Average sunshine days in December: 18.8 days
The month with the most sunshine days is December (18.8 days).
The month with the least sunshine days is July (6.2 days).
Average UV index in December
Isola, Switzerland
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 3).
The months with the lowest UV index are January, February, March, April, October and November (UV index 1).
Average cloud cover in December
Isola, Switzerland
- Average cloud cover in December: 52
The month with the most cloud cover is April (Cloud cover 66).
The month with the least cloud cover is July (Cloud cover 47).
Average visibility in December
Isola, Switzerland
- Average visibility in December: 7km
The month with the highest visibility is July (8km).
The month with the lowest visibility is April (5km).
