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
December's onset corresponds with a subtle shift in the average high-temperature, slightly moving from 5°C (41°F) in November to a still wintry 1.5°C (34.7°F). Svartsjö upholds a consistent average temperature of -2.1°C (28.2°F) throughout the nights of December.Humidity
The months with the highest humidity in Svartsjö are January, February and December, with an average relative humidity of 88%.Rainfall
In Svartsjö, in December, it is raining for 8 days, with typically 29mm (1.14") of accumulated precipitation. Throughout the year, in Svartsjö, Sweden, there are 133.7 rainfall days, and 340mm (13.39") of precipitation is accumulated.Snowfall
Months with snowfall in Svartsjö are January through May, October through December. In Svartsjö, in December, snow falls for 9.4 days, with typically accumulated 63mm (2.48") of snow. Throughout the year, in Svartsjö, there are 45.6 snowfall days, and 310mm (12.2") of snow is accumulated.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 08:19 and sunset at 14:56. On the last day of the month, sunrise is at 08:45 and sunset at 14:58 CET.
Sunshine
With an average of 2.5h of sunshine, December has the least sunshine of the year.UV index
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Svartsjö in December?
What is the most humid month in Svartsjö?
What is the average humidity in December in Svartsjö?
How many days does it rain in December in Svartsjö?
How much does it snow in Svartsjö in December?
What is the month with the shortest days in Svartsjö?
What is the average length of the day in December in Svartsjö?
When are sunrise and sunset in December in Svartsjö?
What is the month with the least sunshine in Svartsjö?
How many hours of sunshine does Svartsjö have in December?
What is the UV index reading in December in Svartsjö?
Average temperature in December
Svartsjö, Sweden
- Average high temperature in December: 1.5°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-0.5°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 (-3.9°C).
Average pressure in December
Svartsjö, Sweden
- Average pressure in December: 1007.8mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in December
Svartsjö, Sweden
- Average wind speed in December: 18km/h
The windiest month (with the highest average wind speed) is December (18km/h).
The calmest months (with the lowest average wind speed) are July and August (12.3km/h).
Average humidity in December
Svartsjö, Sweden
- Average humidity in December: 88%
The months with the highest relative humidity are January, February and December (88%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Svartsjö, Sweden
- Average rainfall in December: 29mm
The wettest month (with the highest rainfall) is July (43mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in December
Svartsjö, Sweden
- Average rainfall days in December: 8 days
The months with the highest number of rainy days are July and August (15.7 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in December
Svartsjö, Sweden
- Average snowfall in December: 63mm
The month with the highest snowfall is February (86mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Svartsjö, Sweden
- Average snowfall days in December: 9.4 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Svartsjö, Sweden
- Average daylight in December: 6h and 1min
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 3min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in December
Svartsjö, Sweden
- Average sunshine days in December: 13 days
The month with the most sunshine days is May (17.9 days).
The months with the least sunshine days are July and November (12.5 days).
Average UV index in December
Svartsjö, 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
Svartsjö, 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 38).
Average visibility in December
Svartsjö, Sweden
- Average visibility in December: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
