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
December signifies a minor drop in average high-temperature, transitioning from a cold 4.9°C (40.8°F) in November to a still icy 1.1°C (34°F). Gryon usually reports an average low-temperature of -6.4°C (20.5°F) during the month of December.Humidity
In Gryon, the average relative humidity in December is 84%.Rainfall
In Gryon, in December, during 5.5 rainfall days, 106mm (4.17") of precipitation is typically accumulated. In Gryon, during the entire year, the rain falls for 163.4 days and collects up to 1169mm (46.02") of precipitation.Snowfall
January through June, September through December are months with snowfall in Gryon. December is the month with the most snowfall. Snow falls for 13 days and accumulates 671mm (26.42") 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 07:54 and sunset at 16:47. On the last day of December, sunrise is at 08:14 and sunset at 16:55 CET.
Sunshine
The months with the least sunshine are January and December, with an average of 5.4h of sunshine.UV index
In December, the average daily maximum UV index in Gryon is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: In December, the UV index of 2 transforms into the following advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
What is the snowiest month in Gryon?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Gryon have in December?
When are sunrise and sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
How high is the UV index in December?
Average temperature in December
Gryon, 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
Gryon, 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
Gryon, 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
Gryon, 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
Gryon, 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
Gryon, 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
Gryon, 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
Gryon, 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
Gryon, 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
Gryon, 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
Gryon, 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
Gryon, 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
Gryon, 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).
