December weather forecastAlnö, Sweden
December
Weather in December
December, the first month of the winter in Alnö, is also a subzero cold month, with temperature in the range of an average high of -1.3°C (29.7°F) and an average low of -4.5°C (23.9°F).Temperature
The beginning of December brings a slight decrease in the average high-temperature, transitioning from a cold 2°C (35.6°F) in November to a freezing cold -1.3°C (29.7°F). Alnö registers a subtle dip to an average of -4.5°C (23.9°F) during the nights of December.Humidity
In Alnö, the average relative humidity in December is 87%.Rainfall
In December, the rain falls for 7.3 days. Throughout December, 41mm (1.61") of precipitation is accumulated. Throughout the year, in Alnö, there are 117.2 rainfall days, and 384mm (15.12") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Alnö, during December, snow falls for 12.7 days and regularly aggregates up to 197mm (7.76") of snow. Throughout the year, in Alnö, there are 70.7 snowfall days, and 908mm (35.75") of snow is accumulated.Daylight
December has the shortest days of the year in Alnö, Sweden, with an average of 5h and 12min of daylight.On the first day of the month, sunrise is at 08:49 and sunset at 14:29. On the last day of December, sunrise is at 09:18 and sunset at 14:28 CET.
Sunshine
December has the least sunshine of the year in Alnö, with an average of 1.7h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Alnö, Sweden
- Average high temperature in December: -1.3°C
The warmest month (with the highest average high temperature) is July (20.3°C).
The month with the lowest average high temperature is January (-3°C).
- Average low temperature in December: -4.5°C
The month with the highest average low temperature is July (11.4°C).
The coldest month (with the lowest average low temperature) is February (-6.9°C).
Average pressure in December
Alnö, Sweden
- Average pressure in December: 1005.9mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1005.9mbar).
Average wind speed in December
Alnö, Sweden
- Average wind speed in December: 11.8km/h
The windiest month (with the highest average wind speed) is January (11.9km/h).
The calmest month (with the lowest average wind speed) is August (9.5km/h).
Average humidity in December
Alnö, Sweden
- Average humidity in December: 87%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is June (66%).
Average rainfall in December
Alnö, Sweden
- Average rainfall in December: 41mm
The wettest month (with the highest rainfall) is July (45mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in December
Alnö, Sweden
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is July (14 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in December
Alnö, Sweden
- Average snowfall in December: 197mm
The month with the highest snowfall is January (217mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Alnö, Sweden
- Average snowfall days in December: 12.7 days
The month with the highest number of snowfall days is January (15.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Alnö, Sweden
- Average daylight in December: 5h and 12min
The month with the longest days is June (Average daylight: 19h and 48min).
The month with the shortest days is December (Average daylight: 5h and 12min).
- Average sunshine in December: 1h and 42min
The month with the most sunshine is June (Average sunshine: 12h and 18min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Average sunshine days in December
Alnö, Sweden
- Average sunshine days in December: 13.3 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is February (12.5 days).
Average UV index in December
Alnö, Sweden
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in December
Alnö, Sweden
- Average cloud cover in December: 61
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in December
Alnö, 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, February and March (7km).
