December weather forecastAyer, Switzerland
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Ayer, Switzerland, with temperature in the range of an average low of -9.4°C (15.1°F) and an average high of -1.4°C (29.5°F).Temperature
December's arrival comes with a mild decrease in the average high-temperature, moving subtly from a cold 2.4°C (36.3°F) in November to a freezing cold -1.4°C (29.5°F). December sees the temperature falling to a mean low of -9.4°C (15.1°F).Humidity
The average relative humidity in December in Ayer is 85%.Rainfall
In Ayer, in December, during 5.9 rainfall days, 110mm (4.33") of precipitation is typically accumulated. In Ayer, Switzerland, during the entire year, the rain falls for 159.9 days and collects up to 1035mm (40.75") of precipitation.Snowfall
January through December are months with snowfall. December is the month with the most snowfall. Snow falls for 18.4 days and accumulates 887mm (34.92") of snow.Daylight
The month with the shortest days is December, with an average of 8h and 42min of daylight.On the first day of December in Ayer, Switzerland, sunrise is at 07:52 and sunset at 16:45. On the last day of the month, sunrise is at 08:12 and sunset at 16:53 CET.
Sunshine
In December, the average sunshine in Ayer is 4.8h.UV index
The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum UV index of 2 in December translates into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ayer, Switzerland
- Average high temperature in December: -1.4°C
The warmest month (with the highest average high temperature) is July (16.5°C).
The month with the lowest average high temperature is January (-2.6°C).
- Average low temperature in December: -9.4°C
The month with the highest average low temperature is August (6.4°C).
The coldest month (with the lowest average low temperature) is February (-11.3°C).
Average pressure in December
Ayer, 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 (1015.2mbar).
Average wind speed in December
Ayer, Switzerland
- Average wind speed in December: 8.4km/h
The windiest month (with the highest average wind speed) is December (8.4km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in December
Ayer, Switzerland
- Average humidity in December: 85%
The month with the highest relative humidity is March (91%).
The months with the lowest relative humidity are July and August (79%).
Average rainfall in December
Ayer, Switzerland
- Average rainfall in December: 110mm
The wettest month (with the highest rainfall) is May (126mm).
The driest months (with the least rainfall) are September and October (54mm).
Average rainfall days in December
Ayer, Switzerland
- Average rainfall days in December: 5.9 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in December
Ayer, Switzerland
- Average snowfall in December: 887mm
The month with the highest snowfall is December (887mm).
The month with the least snowfall is July (5mm).
Average snowfall days in December
Ayer, Switzerland
- Average snowfall days in December: 18.4 days
The month with the highest number of snowfall days is March (21.1 days).
The month with the least snowfall days is August (0.4 days).
Average daylight in December /
Average sunshine in December
Ayer, 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: 4h and 48min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Ayer, Switzerland
- Average sunshine days in December: 12.2 days
The month with the most sunshine days is October (15.4 days).
The month with the least sunshine days is May (4.2 days).
Average UV index in December
Ayer, 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, March, April and November (UV index 1).
Average cloud cover in December
Ayer, Switzerland
- Average cloud cover in December: 48
The month with the most cloud cover is March (Cloud cover 56).
The month with the least cloud cover is October (Cloud cover 38).
Average visibility in December
Ayer, Switzerland
- Average visibility in December: 7km
The months with the highest visibility are June, July, August and October (8km).
The months with the lowest visibility are January, February and March (6km).
