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
Heiwiller's transition into December involves a gentle shift in temperature, receding from a chilly 9°C (48.2°F) in November to a wintry 5.4°C (41.7°F). In December, Heiwiller reports a consistent average low-temperature of 0.2°C (32.4°F) during the nights.Humidity
In Heiwiller, the average relative humidity in December is 85%.Rainfall
In Heiwiller, in December, during 15.3 rainfall days, 71mm (2.8") of precipitation is typically accumulated. In Heiwiller, during the entire year, the rain falls for 183.7 days and collects up to 683mm (26.89") of precipitation.Snowfall
Months with snowfall are January through March, October through December. December is the month with the most snowfall. Snow falls for 6 days and accumulates 60mm (2.36") of snow.Daylight
December has the shortest days of the year, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 07:58 and sunset at 16:41. On the last day of December, sunrise is at 08:18 and sunset at 16:48 CET.
Sunshine
With an average of 4.8h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Heiwiller are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
Is it cold in Heiwiller during December?
What is the average humidity in December in Heiwiller?
How much does it rain in Heiwiller in December?
When does it snow the most in Heiwiller?
How many days does it snow in December in Heiwiller?
What is the month with the shortest days in Heiwiller?
How many hours of daylight does Heiwiller have in December?
When is the sunrise / sunset in December in Heiwiller?
What is the month with the least sunshine in Heiwiller?
How long on average sun shines in December in Heiwiller?
When is the lowest UV index in Heiwiller?
What is the UV index intensity in December in Heiwiller?
Average temperature in December
Heiwiller, France
- Average high temperature in December: 5.4°C
The warmest month (with the highest average high temperature) is August (24.1°C).
The month with the lowest average high temperature is January (3.8°C).
- Average low temperature in December: 0.2°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 (-1.7°C).
Average pressure in December
Heiwiller, France
- Average pressure in December: 1020.6mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is November (1015.6mbar).
Average wind speed in December
Heiwiller, France
- Average wind speed in December: 9.9km/h
The windiest month (with the highest average wind speed) is February (10.1km/h).
The calmest month (with the lowest average wind speed) is August (6.7km/h).
Average humidity in December
Heiwiller, France
- Average humidity in December: 85%
The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and August (76%).
Average rainfall in December
Heiwiller, France
- Average rainfall in December: 71mm
The wettest month (with the highest rainfall) is June (82mm).
The driest month (with the least rainfall) is September (33mm).
Average rainfall days in December
Heiwiller, France
- Average rainfall days in December: 15.3 days
The month with the highest number of rainy days is May (20.8 days).
The month with the least rainy days is October (12.2 days).
Average snowfall in December
Heiwiller, France
- Average snowfall in December: 60mm
The month with the highest snowfall is December (60mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in December
Heiwiller, France
- Average snowfall days in December: 6 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 and September (0 days).
Average daylight in December /
Average sunshine in December
Heiwiller, France
- Average daylight in December: 8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in December
Heiwiller, France
- Average sunshine days in December: 11.7 days
The month with the most sunshine days is October (16 days).
The month with the least sunshine days is May (7.5 days).
Average UV index in December
Heiwiller, France
- 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
Heiwiller, France
- Average cloud cover in December: 51
The months with the most cloud cover are January and December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Heiwiller, France
- Average visibility in December: 8km
The months with the highest visibility are March, April, May, June, July, August and October (9km).
The months with the lowest visibility are January, February, September, November and December (8km).
Heiwiller, France
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