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
A subtle shift in Ollon's weather is observed as November turns into December, with the average high temperature reducing from 4.9°C (40.8°F) to a still wintry 1.1°C (34°F). Ollon reports an average low-temperature of -6.4°C (20.5°F) during the nights of December.Humidity
In December, the average relative humidity is 84%.Rainfall
In Ollon, during December, the rain falls for 5.5 days and regularly aggregates up to 106mm (4.17") of precipitation. Throughout the year, in Ollon, there are 163.4 rainfall days, and 1169mm (46.02") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. December is the month with the most snowfall. Snow falls for 13 days and accumulates 671mm (26.42") of snow.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Ollon.On the first day of the month, sunrise is at 07:54 and sunset at 16:47. On the last day of December, sunrise is at 08:14 and sunset at 16:55 CET.
Sunshine
January and December, with an average of 5.4h of sunshine, are months with the least sunshine.UV index
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: In December, a daily UV index of 2 turns into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Ollon in December?
What is the average humidity in December in Ollon?
How many days does it rain in December in Ollon?
When does it snow the most in Ollon?
How much does it snow in Ollon in December?
What is the month with the shortest days in Ollon?
How many hours of daylight does Ollon have in December?
What time are sunrise and sunset in December in Ollon?
What is the month with the least sunshine in Ollon?
How many hours of sunshine does Ollon have in December?
What is the UV index reading in December in Ollon?
Average temperature in December
Ollon, Switzerland
- Average high temperature in December: 1.1°C
The warmest month (with the highest average high temperature) is August (19°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in December: -6.4°C
The month with the highest average low temperature is August (8.2°C).
The coldest month (with the lowest average low temperature) is February (-8.4°C).
Average pressure in December
Ollon, Switzerland
- Average pressure in December: 1021mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in December
Ollon, Switzerland
- Average wind speed in December: 8.8km/h
The windiest month (with the highest average wind speed) is December (8.8km/h).
The calmest month (with the lowest average wind speed) is August (6.5km/h).
Average humidity in December
Ollon, Switzerland
- Average humidity in December: 84%
The months with the highest relative humidity are February and March (88%).
The months with the lowest relative humidity are July, August and October (78%).
Average rainfall in December
Ollon, Switzerland
- Average rainfall in December: 106mm
The wettest month (with the highest rainfall) is May (150mm).
The driest month (with the least rainfall) is September (57mm).
Average rainfall days in December
Ollon, Switzerland
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (23 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in December
Ollon, Switzerland
- Average snowfall in December: 671mm
The month with the highest snowfall is December (671mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Ollon, Switzerland
- Average snowfall days in December: 13 days
The month with the highest number of snowfall days is January (15.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Ollon, 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: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in December
Ollon, Switzerland
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is October (16.8 days).
The month with the least sunshine days is June (4.8 days).
Average UV index in December
Ollon, Switzerland
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
Ollon, Switzerland
- Average cloud cover in December: 43
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are August and October (Cloud cover 33).
Average visibility in December
Ollon, Switzerland
- Average visibility in December: 8km
The months with the highest visibility are April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January, February and March (7km).
