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
Lerum's weather subtly changes with the onset of December, barely falling from a chilly 6°C (42.8°F) in November to a wintry 2.5°C (36.5°F). Night temperatures during December experience a slight downturn, averaging a subzero cold -0.7°C (30.7°F).Humidity
January, February and December, with an average relative humidity of 89%, are the most humid months.Rainfall
In Lerum, during December, the rain falls for 15 days and regularly aggregates up to 51mm (2.01") of precipitation. In Lerum, during the entire year, the rain falls for 172.1 days and collects up to 500mm (19.69") of precipitation.Snowfall
Months with snowfall in Lerum are January through May, October through December. In Lerum, in December, snow falls for 6.2 days, with typically accumulated 56mm (2.2") of snow. In Lerum, during the entire year, snow falls for 34.3 days and aggregates up to 267mm (10.51") of snow.Daylight
With an average of 6h and 42min of daylight, December has the shortest days of the year.On the first day of December in Lerum, sunrise is at 08:29 and sunset at 15:30. On the last day of the month, sunrise is at 08:54 and sunset at 15:33 CET.
Sunshine
In Lerum, the average sunshine in December is 3.5h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Lerum. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: In December, the maximum UV index of 1 suggests these recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Lerum?
What is the most humid month in Lerum?
What is the average humidity in December in Lerum?
How many days does it rain in December in Lerum?
How many days does it snow in December in Lerum?
What is the month with the shortest days in Lerum?
How many hours of daylight does Lerum have in December?
When is the sunrise / sunset in December in Lerum?
How long on average sun shines in December in Lerum?
When is the lowest UV index in Lerum?
What is the UV index intensity in December in Lerum?
Average temperature in December
Lerum, Sweden
- Average high temperature in December: 2.5°C
The warmest month (with the highest average high temperature) is July (20.6°C).
The month with the lowest average high temperature is January (0.8°C).
- Average low temperature in December: -0.7°C
The months with the highest average low temperature are July and August (12.3°C).
The coldest month (with the lowest average low temperature) is February (-2.7°C).
Average pressure in December
Lerum, Sweden
- Average pressure in December: 1008.8mbar
The month with the highest atmospheric pressure is April (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.8mbar).
Average wind speed in December
Lerum, Sweden
- Average wind speed in December: 16.6km/h
The windiest month (with the highest average wind speed) is December (16.6km/h).
The calmest month (with the lowest average wind speed) is August (12.4km/h).
Average humidity in December
Lerum, Sweden
- Average humidity in December: 89%
The months with the highest relative humidity are January, February and December (89%).
The months with the lowest relative humidity are April and May (73%).
Average rainfall in December
Lerum, Sweden
- Average rainfall in December: 51mm
The wettest month (with the highest rainfall) is August (57mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in December
Lerum, Sweden
- Average rainfall days in December: 15 days
The month with the highest number of rainy days is August (19.6 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in December
Lerum, Sweden
- Average snowfall in December: 56mm
The month with the highest snowfall is January (77mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Lerum, Sweden
- Average snowfall days in December: 6.2 days
The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lerum, Sweden
- Average daylight in December: 6h and 4min
The month with the longest days is June (Average daylight: 18h and 0min).
The month with the shortest days is December (Average daylight: 6h and 42min).
- Average sunshine in December: 3h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in December
Lerum, Sweden
- Average sunshine days in December: 10.2 days
The month with the most sunshine days is April (15.4 days).
The month with the least sunshine days is August (9.2 days).
Average UV index in December
Lerum, Sweden
- Average UV index in December: 1
The months with the highest UV index are May, June and July (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Lerum, Sweden
- Average cloud cover in December: 66
The months with the most cloud cover are February, November and December (Cloud cover 66).
The month with the least cloud cover is June (Cloud cover 41).
Average visibility in December
Lerum, Sweden
- Average visibility in December: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January and February (8km).
Lerum, Sweden
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