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
Start of December brings a slight shift in the average high-temperature, dipping a bit from November's cold 4.9°C (40.8°F) to a still icy 1.7°C (35.1°F). The December nights show a slight decrease to a mean low-temperature of -1.2°C (29.8°F).Humidity
In Forsmark, the average relative humidity in December is 85%.Rainfall
In Forsmark, during December, the rain falls for 8.2 days and regularly aggregates up to 28mm (1.1") of precipitation. In Forsmark, during the entire year, the rain falls for 136.5 days and collects up to 345mm (13.58") of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, in Forsmark, it is snowing for 11.2 days. Throughout December, 70mm (2.76") of snow is accumulated. In Forsmark, during the entire year, snow falls for 51.1 days and aggregates up to 330mm (12.99") of snow.Daylight
The month with the shortest days is December, with an average of 5h and 54min of daylight.On the first day of the month, sunrise is at 08:26 and sunset at 14:46. On the last day of December, sunrise is at 08:53 and sunset at 14:48 CET.
Sunshine
With an average of 2.5h 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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 2 suggests these 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. To protect against the Sun's most potent rays, avoid direct exposure around midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Forsmark?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Forsmark have in December?
How high is the UV index in December?
Average temperature in December
Forsmark, Sweden
- Average high temperature in December: 1.7°C
The warmest month (with the highest average high temperature) is July (19.7°C).
The months with the lowest average high temperature are January and February (-0.1°C).
- Average low temperature in December: -1.2°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is February (-2.9°C).
Average pressure in December
Forsmark, Sweden
- Average pressure in December: 1007.1mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1007.1mbar).
Average wind speed in December
Forsmark, Sweden
- Average wind speed in December: 20.3km/h
The windiest month (with the highest average wind speed) is December (20.3km/h).
The calmest month (with the lowest average wind speed) is July (14.2km/h).
Average humidity in December
Forsmark, Sweden
- Average humidity in December: 85%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are May and June (74%).
Average rainfall in December
Forsmark, Sweden
- Average rainfall in December: 28mm
The wettest month (with the highest rainfall) is July (52mm).
The driest months (with the least rainfall) are February and April (16mm).
Average rainfall days in December
Forsmark, Sweden
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is August (16.5 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Forsmark, Sweden
- Average snowfall in December: 70mm
The month with the highest snowfall is March (78mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Forsmark, Sweden
- Average snowfall days in December: 11.2 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Forsmark, 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 3min
The month with the most sunshine is June (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in December
Forsmark, Sweden
- Average sunshine days in December: 11.6 days
The month with the most sunshine days is April (15.8 days).
The month with the least sunshine days is December (11.6 days).
Average UV index in December
Forsmark, 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 and February (UV index 1).
Average cloud cover in December
Forsmark, Sweden
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Forsmark, Sweden
- Average visibility in December: 9km
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, November and December (9km).
