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
Weather in December
Temperature
The start of December signals a gentle decrease in the average high-temperature, transitioning from a chilly 9°C (48.2°F) in November to a still frosty 6°C (42.8°F). The low temperature average in Altena during December reflects a slight decrease to an icy 2.7°C (36.9°F) from the day's peak.Humidity
With an average relative humidity of 88%, December is the most humid month in Altena.Rainfall
In Altena, during December, the rain falls for 17.5 days and regularly aggregates up to 28mm (1.1") of precipitation. In Altena, during the entire year, the rain falls for 179 days and collects up to 336mm (13.23") of precipitation.Snowfall
January through March, November and December are months with snowfall. In Altena, in December, during 3.4 snowfall days, 12mm (0.47") of snow is typically accumulated. Throughout the year, there are 14.9 snowfall days, and 51mm (2.01") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 7h and 36min of daylight.On the first day of the month, sunrise is at 08:25 and sunset at 16:20. On the last day of December, in Altena, sunrise is at 08:48 and sunset at 16:26 CET.
Sunshine
The month with the least sunshine is December, with an average of 3.4h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Altena. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
How cold is December in Altena?
What is the most humid month in Altena?
What is the average humidity in December in Altena?
How much does it rain in Altena in December?
How much does it snow in Altena in December?
What is the month with the shortest days in Altena?
What is the average length of the day in December in Altena?
When are sunrise and sunset in December in Altena?
What is the month with the least sunshine in Altena?
How long on average sun shines in December in Altena?
What is the month with the lowest UV index in Altena?
What is the UV index intensity in December in Altena?
Average temperature in December
Altena, Netherlands
- Average high temperature in December: 6°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The month with the lowest average high temperature is January (4.4°C).
- Average low temperature in December: 2.7°C
The month with the highest average low temperature is August (13.9°C).
The coldest month (with the lowest average low temperature) is February (1°C).
Average pressure in December
Altena, Netherlands
- Average pressure in December: 1013.4mbar
The months with the highest atmospheric pressure are May and September (1016.4mbar).
The month with the lowest atmospheric pressure is November (1011.1mbar).
Average wind speed in December
Altena, Netherlands
- Average wind speed in December: 21.2km/h
The windiest month (with the highest average wind speed) is December (21.2km/h).
The calmest month (with the lowest average wind speed) is July (14km/h).
Average humidity in December
Altena, Netherlands
- Average humidity in December: 88%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Altena, Netherlands
- Average rainfall in December: 28mm
The wettest month (with the highest rainfall) is June (41mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in December
Altena, Netherlands
- Average rainfall days in December: 17.5 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (11.5 days).
Average snowfall in December
Altena, Netherlands
- Average snowfall in December: 12mm
The month with the highest snowfall is January (17mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Altena, Netherlands
- Average snowfall days in December: 3.4 days
The month with the highest number of snowfall days is February (4.8 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
Altena, Netherlands
- Average daylight in December: 7h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in December
Altena, Netherlands
- Average sunshine days in December: 9 days
The months with the most sunshine days are March and April (14.8 days).
The month with the least sunshine days is December (9 days).
Average UV index in December
Altena, Netherlands
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Altena, Netherlands
- Average cloud cover in December: 68
The month with the most cloud cover is December (Cloud cover 68).
The months with the least cloud cover are April and August (Cloud cover 41).
Average visibility in December
Altena, Netherlands
- Average visibility in December: 9km
The months with the highest visibility are April and August (10km).
The months with the lowest visibility are January, February, March, May, June, July, September, October, November and December (9km).
Altena, Netherlands
Weather forecast for your location
2. Allow the app to use your location
