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
Transition into December subtly marks a drop in the average high-temperature, moderately moving from a chilly 8.9°C (48°F) in November to an icy 5.4°C (41.7°F). December nights in Hennef register a minor temperature decline, steadying at a still cold 1.2°C (34.2°F).Humidity
With an average relative humidity of 89%, December is the most humid month.Rainfall
In Hennef, in December, during 13.6 rainfall days, 29mm (1.14") of precipitation is typically accumulated. In Hennef, during the entire year, the rain falls for 156 days and collects up to 305mm (12.01") of precipitation.Snowfall
Months with snowfall in Hennef are January through March, November and December. In Hennef, in December, snow falls for 5.1 days, with typically accumulated 25mm (0.98") of snow. Throughout the year, there are 19.5 snowfall days, and 98mm (3.86") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 0min of daylight.On the first day of December, sunrise is at 08:11 and sunset at 16:28. On the last day of the month, sunrise is at 08:32 and sunset at 16:35 CET.
Sunshine
The month with the least sunshine is December, with an average of 3.8h 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 Hennef. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
Is it cold in Hennef during December?
What is the most humid month in Hennef?
What is the average humidity in December in Hennef?
How many days does it rain in December in Hennef?
How many days does it snow in December in Hennef?
What is the month with the shortest days in Hennef?
What is the average length of the day in December in Hennef?
What time are sunrise and sunset in December in Hennef?
What is the month with the least sunshine in Hennef?
How long on average sun shines in December in Hennef?
What are the months with the lowest UV index in Hennef?
What is the UV index reading in December in Hennef?
Average temperature in December
Hennef, Germany
- Average high temperature in December: 5.4°C
The warmest month (with the highest average high temperature) is July (23.5°C).
The month with the lowest average high temperature is January (4°C).
- Average low temperature in December: 1.2°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (-0.3°C).
Average pressure in December
Hennef, Germany
- Average pressure in December: 1017.1mbar
The month with the highest atmospheric pressure is September (1017.8mbar).
The month with the lowest atmospheric pressure is November (1013.6mbar).
Average wind speed in December
Hennef, Germany
- Average wind speed in December: 12.5km/h
The windiest month (with the highest average wind speed) is February (12.8km/h).
The calmest month (with the lowest average wind speed) is August (8.9km/h).
Average humidity in December
Hennef, Germany
- Average humidity in December: 89%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (73%).
Average rainfall in December
Hennef, Germany
- Average rainfall in December: 29mm
The wettest month (with the highest rainfall) is August (33mm).
The driest months (with the least rainfall) are April and September (17mm).
Average rainfall days in December
Hennef, Germany
- Average rainfall days in December: 13.6 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is February (10.4 days).
Average snowfall in December
Hennef, Germany
- Average snowfall in December: 25mm
The month with the highest snowfall is February (35mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Hennef, Germany
- Average snowfall days in December: 5.1 days
The month with the highest number of snowfall days is January (6 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
Hennef, Germany
- Average daylight in December: 8h and 0min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days in December
Hennef, Germany
- Average sunshine days in December: 11.4 days
The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is December (11.4 days).
Average UV index in December
Hennef, 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, November and December (UV index 2).
Average cloud cover in December
Hennef, Germany
- Average cloud cover in December: 62
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Hennef, Germany
- Average visibility in December: 8km
The months with the highest visibility are March, April, May, June, July and August (9km).
The months with the lowest visibility are January, February, September, October, November and December (8km).
Hennef, Germany
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