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
December
Weather in December
Temperature
The transition into December subtly indicates a reduction in the average high-temperature, down to a still wintry 2.3°C (36.1°F) from November's icy 5.7°C (42.3°F). During December's nights, Lännåker notes a minor temperature decline, reaching an average of -0.5°C (31.1°F).Humidity
In December, the average relative humidity is 85%.Rainfall
In December, in Lännåker, the rain falls for 6.6 days. Throughout December, 11mm (0.43") of precipitation is accumulated. Throughout the year, in Lännåker, there are 88.9 rainfall days, and 116mm (4.57") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Lännåker, in December, snow falls for 8 days, with typically accumulated 18mm (0.71") of snow. Throughout the year, in Lännåker, there are 38.5 snowfall days, and 78mm (3.07") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 6h and 18min of daylight.On the first day of December, sunrise is at 08:15 and sunset at 14:56. On the last day of the month, sunrise is at 08:41 and sunset at 14:59 CET.
Sunshine
December has the least sunshine of the year, with an average of 2.5h of sunshine.UV index
The average daily maximum UV index in December in Lännåker, Sweden, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 translates into these guidelines:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Lännåker?
What is the average humidity in December in Lännåker?
How many days does it rain in December in Lännåker?
How many days does it snow in December in Lännåker?
What is the month with the shortest days in Lännåker?
What is the average length of the day in December in Lännåker?
What time are sunrise and sunset in December in Lännåker?
What is the month with the least sunshine in Lännåker?
How long on average sun shines in December in Lännåker?
What is the UV index intensity in December in Lännåker?
Average temperature in December
Lännåker, Sweden
- Average high temperature in December: 2.3°C
The warmest month (with the highest average high temperature) is July (19.5°C).
The month with the lowest average high temperature is February (0.3°C).
- Average low temperature in December: -0.5°C
The month with the highest average low temperature is August (14.4°C).
The coldest months (with the lowest average low temperature) are January and February (-2.3°C).
Average pressure in December
Lännåker, Sweden
- Average pressure in December: 1007.9mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in December
Lännåker, Sweden
- Average wind speed in December: 23.5km/h
The windiest month (with the highest average wind speed) is December (23.5km/h).
The calmest month (with the lowest average wind speed) is July (15.3km/h).
Average humidity in December
Lännåker, Sweden
- Average humidity in December: 85%
The month with the highest relative humidity is November (86%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Lännåker, Sweden
- Average rainfall in December: 11mm
The wettest months (with the highest rainfall) are July and August (14mm).
The driest month (with the least rainfall) is April (4mm).
Average rainfall days in December
Lännåker, Sweden
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is August (10.9 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Lännåker, Sweden
- Average snowfall in December: 18mm
The month with the highest snowfall is February (23mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Lännåker, Sweden
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lännåker, Sweden
- Average daylight in December: 6h and 2min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in December: 2h and 3min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in December
Lännåker, Sweden
- Average sunshine days in December: 14.4 days
The months with the most sunshine days are April and May (21.8 days).
The month with the least sunshine days is December (14.4 days).
Average UV index in December
Lännåker, Sweden
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
Lännåker, Sweden
- Average cloud cover in December: 64
The months with the most cloud cover are January and February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Lännåker, Sweden
- Average visibility in December: 9km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
