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
Weather in December
Temperature
With the beginning of December, the average high-temperature shows a small decrease, transitioning from 4.7°C (40.5°F) in November to a still wintry 1°C (33.8°F). During the nights of December, Hässelby records an average temperature of -2.9°C (26.8°F), a minor drop from daytime peaks.Humidity
January, February, November and December, with an average relative humidity of 90%, are the most humid months.Rainfall
In Hässelby, during December, the rain falls for 8.6 days and regularly aggregates up to 29mm (1.14") of precipitation. In Hässelby, during the entire year, the rain falls for 140.4 days and collects up to 387mm (15.24") of precipitation.Snowfall
Months with snowfall in Hässelby are January through May, October through December. In Hässelby, in December, during 9.6 snowfall days, 90mm (3.54") of snow is typically accumulated. In Hässelby, during the entire year, snow falls for 49.3 days and aggregates up to 420mm (16.54") of snow.Daylight
December has the shortest days of the year in Hässelby, with an average of 6h and 18min of daylight.On the first day of the month, sunrise is at 08:21 and sunset at 15:02. On the last day of December, sunrise is at 08:47 and sunset at 15:04 CET.
Sunshine
The month with the least sunshine is December, with an average of 2.7h of sunshine.UV index
The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. To protect against the Sun's most potent rays, avoid direct exposure around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
How cold is it in Hässelby in December?
What is the most humid month in Hässelby?
What is the average humidity in December in Hässelby?
How many days does it rain in December in Hässelby?
How much does it snow in Hässelby in December?
What is the month with the shortest days in Hässelby?
What is the average length of the day in December in Hässelby?
What time are sunrise and sunset in December in Hässelby?
What is the month with the least sunshine in Hässelby?
How long on average sun shines in December in Hässelby?
How high is the UV index in December in Hässelby?
Average temperature in December
Hässelby, Sweden
- Average high temperature in December: 1°C
The warmest month (with the highest average high temperature) is July (22.4°C).
The month with the lowest average high temperature is January (-0.8°C).
- Average low temperature in December: -2.9°C
The month with the highest average low temperature is July (12.4°C).
The coldest months (with the lowest average low temperature) are January and February (-4.6°C).
Average pressure in December
Hässelby, Sweden
- Average pressure in December: 1008.1mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.1mbar).
Average wind speed in December
Hässelby, Sweden
- Average wind speed in December: 14km/h
The windiest month (with the highest average wind speed) is December (14km/h).
The calmest month (with the lowest average wind speed) is August (10.9km/h).
Average humidity in December
Hässelby, Sweden
- Average humidity in December: 90%
The months with the highest relative humidity are January, February, November and December (90%).
The months with the lowest relative humidity are May and June (70%).
Average rainfall in December
Hässelby, Sweden
- Average rainfall in December: 29mm
The wettest month (with the highest rainfall) is July (57mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in December
Hässelby, Sweden
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in December
Hässelby, Sweden
- Average snowfall in December: 90mm
The month with the highest snowfall is February (112mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Hässelby, Sweden
- Average snowfall days in December: 9.6 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hässelby, 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 4min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 2h and 42min).
Average sunshine days in December
Hässelby, Sweden
- Average sunshine days in December: 13.7 days
The month with the most sunshine days is October (17 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in December
Hässelby, Sweden
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Hässelby, Sweden
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is June (Cloud cover 42).
Average visibility in December
Hässelby, Sweden
- Average visibility in December: 8km
The months with the highest visibility are April, May, June, July, August and October (9km).
The months with the lowest visibility are January and February (7km).
Hässelby, Sweden
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