December weather forecastGrönsta, Sweden
December
Weather in December
The first month of the winter, December, is also a wintry month in Grönsta, Sweden, with an average temperature ranging between min -1.5°C (29.3°F) and max 1.6°C (34.9°F).Temperature
December's onset introduces a mild reduction in the average high-temperature, from an icy 5°C (41°F) in November to a still cold 1.6°C (34.9°F). December nights witness a mild cool down to an average low of -1.5°C (29.3°F).Humidity
The months with the highest humidity in Grönsta are January, February, November and December, with an average relative humidity of 87%.Rainfall
In Grönsta, Sweden, during December, the rain falls for 10.5 days and regularly aggregates up to 35mm (1.38") of precipitation. Throughout the year, there are 151.7 rainfall days, and 403mm (15.87") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Grönsta, in December, during 10.7 snowfall days, 78mm (3.07") of snow is typically accumulated. In Grönsta, during the entire year, snow falls for 53.7 days and aggregates up to 359mm (14.13") of snow.Daylight
December has the shortest days of the year, with an average of 6h and 12min of daylight.On the first day of December, sunrise is at 08:18 and sunset at 14:55. On the last day of the month, sunrise is at 08:44 and sunset at 14:57 CET.
Sunshine
With an average of 2.5h of sunshine, December has the least sunshine of the year in Grönsta, Sweden.UV index
In December, the average daily maximum UV index in Grönsta is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grönsta, Sweden
- Average high temperature in December: 1.6°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 (-0.2°C).
- Average low temperature in December: -1.5°C
The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is January (-3.2°C).
Average pressure in December
Grönsta, Sweden
- Average pressure in December: 1007.8mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in December
Grönsta, Sweden
- Average wind speed in December: 19.7km/h
The windiest month (with the highest average wind speed) is December (19.7km/h).
The calmest month (with the lowest average wind speed) is July (13.2km/h).
Average humidity in December
Grönsta, Sweden
- Average humidity in December: 87%
The months with the highest relative humidity are January, February, November and December (87%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Grönsta, Sweden
- Average rainfall in December: 35mm
The wettest month (with the highest rainfall) is July (52mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in December
Grönsta, Sweden
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is February (6.1 days).
Average snowfall in December
Grönsta, Sweden
- Average snowfall in December: 78mm
The month with the highest snowfall is February (98mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Grönsta, Sweden
- Average snowfall days in December: 10.7 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
Grönsta, Sweden
- Average daylight in December: 6h and 12min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in December: 2h and 30min
The month with the most sunshine is June (Average sunshine: 12h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in December
Grönsta, Sweden
- Average sunshine days in December: 10.4 days
The month with the most sunshine days is April (14.3 days).
The month with the least sunshine days is August (9.7 days).
Average UV index in December
Grönsta, 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
Grönsta, Sweden
- Average cloud cover in December: 65
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Grönsta, Sweden
- Average visibility in December: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (9km).
