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 beginning of December subtly marks a decrease in the average high-temperature, transitioning from 4.4°C (39.9°F) in November to a still wintry 0.9°C (33.6°F). Nighttime temperatures hover around an average low of -2.1°C (28.2°F) in December, a slight descent from daytime highs.Humidity
The average relative humidity in December is 87%.Rainfall
In Älvkarleby, in December, it is raining for 6.8 days, with typically 24mm (0.94") of accumulated precipitation. In Älvkarleby, during the entire year, the rain falls for 118.2 days and collects up to 304mm (11.97") of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 10.6 days. Throughout December, 84mm (3.31") of snow is accumulated. Throughout the year, there are 55.4 snowfall days, and 417mm (16.42") of snow is accumulated.Daylight
The month with the shortest days in Älvkarleby is December, with an average of 5h and 54min of daylight.On the first day of the month, sunrise is at 08:30 and sunset at 14:47. On the last day of December, sunrise is at 08:57 and sunset at 14:48 CET.
Sunshine
With an average of 2.4h of sunshine, December has the least sunshine of the year.UV index
The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Around midday, solar radiation is most harmful; hence, exposure should be limited. Experience reduced UV exposure by about half when donning a wide-brim hat. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Älvkarleby have in December?
How high is the UV index in December?
Average temperature in December
Älvkarleby, Sweden
- Average high temperature in December: 0.9°C
The warmest month (with the highest average high temperature) is July (20.8°C).
The month with the lowest average high temperature is January (-0.8°C).
- Average low temperature in December: -2.1°C
The month with the highest average low temperature is July (13.2°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in December
Älvkarleby, Sweden
- Average pressure in December: 1006.9mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1006.9mbar).
Average wind speed in December
Älvkarleby, Sweden
- Average wind speed in December: 14.9km/h
The windiest month (with the highest average wind speed) is December (14.9km/h).
The calmest month (with the lowest average wind speed) is August (11.5km/h).
Average humidity in December
Älvkarleby, Sweden
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (69%).
Average rainfall in December
Älvkarleby, Sweden
- Average rainfall in December: 24mm
The wettest month (with the highest rainfall) is July (42mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in December
Älvkarleby, Sweden
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in December
Älvkarleby, Sweden
- Average snowfall in December: 84mm
The month with the highest snowfall is March (103mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Älvkarleby, Sweden
- Average snowfall days in December: 10.6 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Älvkarleby, Sweden
- Average daylight in December: 5h and 5min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in December: 2h and 2min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in December
Älvkarleby, Sweden
- Average sunshine days in December: 14 days
The month with the most sunshine days is April (17.3 days).
The month with the least sunshine days is July (13.2 days).
Average UV index in December
Älvkarleby, Sweden
- 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 and November (UV index 1).
Average cloud cover in December
Älvkarleby, Sweden
- Average cloud cover in December: 64
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in December
Älvkarleby, Sweden
- Average visibility in December: 9km
The months with the highest visibility are January, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are February and March (8km).
