December weather forecastAltena, Germany
December
Weather in December
The first month of the winter, December, is also a wintry month in Altena, Germany, with an average temperature ranging between min 0.3°C (32.5°F) and max 4.5°C (40.1°F).Temperature
The transition into December is accompanied by a slight temperature decrease, with the average high-temperature shifting from a frosty 8.1°C (46.6°F) in November to a wintry 4.5°C (40.1°F). In Altena, nights during December observe an average temperature decrease to a still icy 0.3°C (32.5°F).Humidity
With an average relative humidity of 91%, December is the most humid month in Altena, Germany.Rainfall
The month with the most rainfall in Altena is December, when the rain falls for 13.4 days and typically aggregates up to 73mm (2.87") of precipitation.Snowfall
January through May, October through December are months with snowfall in Altena. In December, in Altena, Germany, it is snowing for 10.2 days. Throughout December, 125mm (4.92") of snow is accumulated. In Altena, during the entire year, snow falls for 43.4 days and aggregates up to 536mm (21.1") of snow.Daylight
With an average of 8h and 0min of daylight, December has the shortest days of the year in Altena.On the first day of December, sunrise is at 08:12 and sunset at 16:24. On the last day of the month, sunrise is at 08:33 and sunset at 16:31 CET.
Sunshine
The month with the least sunshine in Altena is December, with an average of 3.2h of sunshine.UV index
The months with the lowest UV index in Altena are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 2 during December translates into the following 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. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Opt for tightly woven and loose clothing to enhance protection from the Sun. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Altena, Germany
- Average high temperature in December: 4.5°C
The warmest month (with the highest average high temperature) is August (22.4°C).
The month with the lowest average high temperature is January (3.2°C).
- Average low temperature in December: 0.3°C
The month with the highest average low temperature is August (12.6°C).
The coldest month (with the lowest average low temperature) is January (-0.9°C).
Average pressure in December
Altena, Germany
- Average pressure in December: 1016.6mbar
The month with the highest atmospheric pressure is September (1017.7mbar).
The month with the lowest atmospheric pressure is November (1013.4mbar).
Average wind speed in December
Altena, Germany
- Average wind speed in December: 13.9km/h
The windiest month (with the highest average wind speed) is February (14km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in December
Altena, Germany
- Average humidity in December: 91%
The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are April and August (76%).
Average rainfall in December
Altena, Germany
- Average rainfall in December: 73mm
The wettest month (with the highest rainfall) is December (73mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in December
Altena, Germany
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is July (18.7 days).
The month with the least rainy days is February (9.4 days).
Average snowfall in December
Altena, Germany
- Average snowfall in December: 125mm
The month with the highest snowfall is January (143mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Altena, Germany
- Average snowfall days in December: 10.2 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Altena, Germany
- Average daylight in December: 8h and 0min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in December: 3h and 12min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in December
Altena, Germany
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is April (14.4 days).
The month with the least sunshine days is December (9.5 days).
Average UV index in December
Altena, Germany
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Altena, Germany
- Average cloud cover in December: 70
The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in December
Altena, Germany
- Average visibility in December: 7km
The months with the highest visibility are April, June and August (9km).
The months with the lowest visibility are January and December (7km).
