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
The onset of December is marked by a minor decrease in temperature, transitioning from a cold 5.9°C (42.6°F) in November to a still wintry 2.6°C (36.7°F). Throughout December, Sundby observes a steady low-temperature average of -0.3°C (31.5°F), reflecting a minor dip from daytime highs.Humidity
January, February, November and December, with an average relative humidity of 85%, are the most humid months.Rainfall
In Sundby, in December, during 10.5 rainfall days, 32mm (1.26") of precipitation is typically accumulated. In Sundby, during the entire year, the rain falls for 138.3 days and collects up to 361mm (14.21") of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Sundby, during December, snow falls for 8.2 days and regularly aggregates up to 43mm (1.69") of snow. Throughout the year, in Sundby, there are 42.4 snowfall days, and 227mm (8.94") of snow is accumulated.Daylight
The month with the shortest days in Sundby is December, with an average of 6h and 12min of daylight.On the first day of December, sunrise is at 08:19 and sunset at 14:57. On the last day of the month, sunrise is at 08:45 and sunset at 14:59 CET.
Sunshine
With an average of 2.4h of sunshine, December has the least sunshine of the year.UV index
In December, the average daily maximum UV index in Sundby is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Sundby in December?
What is the most humid month in Sundby?
What is the average humidity in December in Sundby?
How many days does it rain in December in Sundby?
How much does it snow in Sundby in December?
What is the month with the shortest days in Sundby?
How many hours of daylight does Sundby have in December?
When is the sunrise / sunset in December in Sundby?
What is the month with the least sunshine in Sundby?
How many hours of sunshine does Sundby have in December?
What is the UV index reading in December in Sundby?
Average temperature in December
Sundby, Sweden
- Average high temperature in December: 2.6°C
The warmest month (with the highest average high temperature) is July (19.5°C).
The month with the lowest average high temperature is January (0.7°C).
- Average low temperature in December: -0.3°C
The month with the highest average low temperature is July (14.4°C).
The coldest month (with the lowest average low temperature) is January (-2°C).
Average pressure in December
Sundby, Sweden
- Average pressure in December: 1008.3mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).
Average wind speed in December
Sundby, Sweden
- Average wind speed in December: 24.1km/h
The windiest month (with the highest average wind speed) is December (24.1km/h).
The calmest month (with the lowest average wind speed) is July (16km/h).
Average humidity in December
Sundby, Sweden
- Average humidity in December: 85%
The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Sundby, Sweden
- Average rainfall in December: 32mm
The wettest month (with the highest rainfall) is July (42mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in December
Sundby, Sweden
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in December
Sundby, Sweden
- Average snowfall in December: 43mm
The month with the highest snowfall is February (70mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Sundby, Sweden
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sundby, 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 2min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in December
Sundby, Sweden
- Average sunshine days in December: 12.1 days
The month with the most sunshine days is April (17 days).
The month with the least sunshine days is December (12.1 days).
Average UV index in December
Sundby, Sweden
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
Sundby, Sweden
- Average cloud cover in December: 66
The months with the most cloud cover are January, February and December (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in December
Sundby, Sweden
- Average visibility in December: 9km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
