December weather forecastSion, Netherlands
December
Weather in December
The first month of the winter, December, is also a frosty month in Sion, Netherlands, with an average temperature fluctuating between 7.5°C (45.5°F) and 5°C (41°F).Temperature
The shift to December signals an average high-temperature of a chilly 7.5°C (45.5°F), subtly varied from November's 10.4°C (50.7°F). Consistently, Sion reports average nighttime temperatures of 5°C (41°F) during December, a marginal step down from its daytime highs.Humidity
The months with the highest humidity in Sion are January and December, with an average relative humidity of 83%.Rainfall
In December, the rain falls for 19.8 days. Throughout December, 61mm (2.4") of precipitation is accumulated. In Sion, during the entire year, the rain falls for 198.4 days and collects up to 554mm (21.81") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Sion, during December, snow falls for 2.2 days and regularly aggregates up to 11mm (0.43") of snow. Throughout the year, in Sion, Netherlands, there are 10.4 snowfall days, and 55mm (2.17") of snow is accumulated.Daylight
With an average of 7h and 48min of daylight, December has the shortest days of the year in Sion.On the first day of December in Sion, sunrise is at 08:29 and sunset at 16:34. On the last day of the month, sunrise is at 08:50 and sunset at 16:41 CET.
Sunshine
The month with the least sunshine is December, with an average of 3.5h of sunshine.UV index
The months with the lowest UV index in Sion, Netherlands, are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sion, Netherlands
- Average high temperature in December: 7.5°C
The warmest month (with the highest average high temperature) is August (21.1°C).
The month with the lowest average high temperature is January (5.9°C).
- Average low temperature in December: 5°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (2.9°C).
Average pressure in December
Sion, Netherlands
- Average pressure in December: 1014.5mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1011.2mbar).
Average wind speed in December
Sion, Netherlands
- Average wind speed in December: 24.9km/h
The windiest month (with the highest average wind speed) is December (24.9km/h).
The calmest month (with the lowest average wind speed) is July (16.2km/h).
Average humidity in December
Sion, Netherlands
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The months with the lowest relative humidity are April and August (75%).
Average rainfall in December
Sion, Netherlands
- Average rainfall in December: 61mm
The wettest month (with the highest rainfall) is August (65mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in December
Sion, Netherlands
- Average rainfall days in December: 19.8 days
The months with the highest number of rainy days are August and December (19.8 days).
The month with the least rainy days is April (12.3 days).
Average snowfall in December
Sion, Netherlands
- Average snowfall in December: 11mm
The month with the highest snowfall is February (24mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Sion, Netherlands
- Average snowfall days in December: 2.2 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Sion, Netherlands
- Average daylight in December: 7h and 48min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in December: 3h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in December
Sion, Netherlands
- Average sunshine days in December: 7.1 days
The month with the most sunshine days is April (15.8 days).
The month with the least sunshine days is December (7.1 days).
Average UV index in December
Sion, Netherlands
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Sion, Netherlands
- Average cloud cover in December: 65
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Sion, Netherlands
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
