December weather forecastMettmann, Germany
December
Weather in December
December, the first month of the winter in Mettmann, is also a wintry month, with temperature in the range of an average high of 5.6°C (42.1°F) and an average low of 1.6°C (34.9°F).Temperature
A subtle change in temperatures is noted as November gives way to December, with average highs reducing from a frosty 9°C (48.2°F) to an icy 5.6°C (42.1°F). Nighttime temperature reflects an average dip to a still cold 1.6°C (34.9°F) in December, subtly cooler than its daytime highs.Humidity
December is the most humid month, with an average relative humidity of 88%.Rainfall
December is the month with the most rainfall. Rain falls for 16 days and accumulates 67mm (2.64") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Mettmann, in December, during 5.8 snowfall days, 59mm (2.32") of snow is typically accumulated. In Mettmann, during the entire year, snow falls for 24.4 days and aggregates up to 234mm (9.21") of snow.Daylight
With an average of 8h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 08:14 and sunset at 16:27. On the last day of the month, sunrise is at 08:36 and sunset at 16:34 CET.
Sunshine
With an average of 3.7h of sunshine, December has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Consider this! The reflection from 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
Mettmann, Germany
- Average high temperature in December: 5.6°C
The warmest month (with the highest average high temperature) is July (23.6°C).
The month with the lowest average high temperature is January (4.2°C).
- Average low temperature in December: 1.6°C
The month with the highest average low temperature is August (14.5°C).
The coldest month (with the lowest average low temperature) is January (0.3°C).
Average pressure in December
Mettmann, Germany
- Average pressure in December: 1016.5mbar
The month with the highest atmospheric pressure is September (1017.6mbar).
The month with the lowest atmospheric pressure is November (1013.2mbar).
Average wind speed in December
Mettmann, Germany
- Average wind speed in December: 14.3km/h
The windiest month (with the highest average wind speed) is February (14.4km/h).
The calmest month (with the lowest average wind speed) is August (9.8km/h).
Average humidity in December
Mettmann, Germany
- Average humidity in December: 88%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (71%).
Average rainfall in December
Mettmann, Germany
- Average rainfall in December: 67mm
The wettest month (with the highest rainfall) is December (67mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in December
Mettmann, Germany
- Average rainfall days in December: 16 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is February (12.1 days).
Average snowfall in December
Mettmann, Germany
- Average snowfall in December: 59mm
The month with the highest snowfall is January (76mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Mettmann, Germany
- Average snowfall days in December: 5.8 days
The month with the highest number of snowfall days is January (7.3 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
Mettmann, 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 42min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in December
Mettmann, Germany
- Average sunshine days in December: 9.8 days
The month with the most sunshine days is April (15.2 days).
The month with the least sunshine days is December (9.8 days).
Average UV index in December
Mettmann, Germany
- 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
Mettmann, Germany
- Average cloud cover in December: 64
The month with the most cloud cover is December (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Mettmann, Germany
- Average visibility in December: 8km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, November and December (8km).
