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
Kallhäll's weather in December involves a mild decrease in the average high-temperature, moving down slightly from November's wintry 5°C (41°F) to a still icy 1.5°C (34.7°F). In December, Kallhäll experiences a marginal drop in temperature, with averages of -2.1°C (28.2°F) at night.Humidity
January, February and December, with an average relative humidity of 88%, are the most humid months in Kallhäll, Sweden.Rainfall
In December, the rain falls for 8 days. Throughout December, 29mm (1.14") of precipitation is accumulated. In Kallhäll, during the entire year, the rain falls for 133.7 days and collects up to 340mm (13.39") of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Kallhäll, during December, snow falls for 9.4 days and regularly aggregates up to 63mm (2.48") of snow. In Kallhäll, during the entire year, snow falls for 45.6 days and aggregates up to 310mm (12.2") of snow.Daylight
December has the shortest days of the year in Kallhäll, with an average of 6h and 12min of daylight.On the first day of the month, sunrise is at 08:20 and sunset at 14:55. On the last day of December, in Kallhäll, sunrise is at 08:46 and sunset at 14:57 CET.
Sunshine
The month with the least sunshine in Kallhäll, Sweden, is December, with an average of 2.5h of sunshine.UV index
In Kallhäll, Sweden, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
How cold is December in Kallhäll?
What is the most humid month in Kallhäll?
What is the average humidity in December in Kallhäll?
How much does it rain in Kallhäll in December?
How many days does it snow in December in Kallhäll?
What is the month with the shortest days in Kallhäll?
What is the average length of the day in December in Kallhäll?
What time are sunrise and sunset in December in Kallhäll?
What is the month with the least sunshine in Kallhäll?
How many hours of sunshine does Kallhäll have in December?
What is the UV index intensity in December in Kallhäll?
Average temperature in December
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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
Kallhäll, 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).
Kallhäll, Sweden
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