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
The beginning of December brings a minor change in the average high-temperature, shifting from a chilly 6.7°C (44.1°F) in November to an icy 3.5°C (38.3°F). In Karlby, a slight decrease from the daytime peak is noted during the month of December, with an average low-temperature of 1.7°C (35.1°F).Humidity
The average relative humidity in December in Karlby is 81%.Rainfall
In Karlby, in December, during 11.8 rainfall days, 33mm (1.3") of precipitation is typically accumulated. Throughout the year, there are 132.5 rainfall days, and 310mm (12.2") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Karlby, in December, snow falls for 7.5 days, with typically accumulated 29mm (1.14") of snow. Throughout the year, there are 38.5 snowfall days, and 160mm (6.3") of snow is accumulated.Daylight
December has the shortest days of the year in Karlby, with an average of 6h and 6min of daylight.On the first day of the month, sunrise is at 09:11 and sunset at 15:39. On the last day of December, in Karlby, sunrise is at 09:37 and sunset at 15:41 EET.
Sunshine
The month with the least sunshine in Karlby, Finland, is December, with an average of 2h of sunshine.UV index
January through March and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
Is December cold in Karlby?
What is the average humidity in December in Karlby?
How much does it rain in Karlby in December?
How much does it snow in Karlby in December?
What is the month with the shortest days in Karlby?
What is the average length of the day in December in Karlby?
When is the sunrise / sunset in December in Karlby?
What is the month with the least sunshine in Karlby?
How many hours of sunshine does Karlby have in December?
What are the months with the lowest UV index in Karlby?
What is the UV index reading in December in Karlby?
Average temperature in December
Karlby, Finland
- Average high temperature in December: 3.5°C
The warmest month (with the highest average high temperature) is August (18.1°C).
The month with the lowest average high temperature is February (0.3°C).
- Average low temperature in December: 1.7°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (-1.7°C).
Average pressure in December
Karlby, Finland
- Average pressure in December: 1007.8mbar
The month with the highest atmospheric pressure is May (1015mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in December
Karlby, Finland
- Average wind speed in December: 34.1km/h
The windiest month (with the highest average wind speed) is December (34.1km/h).
The calmest month (with the lowest average wind speed) is July (21.2km/h).
Average humidity in December
Karlby, Finland
- Average humidity in December: 81%
The months with the highest relative humidity are February and March (84%).
The months with the lowest relative humidity are August, September and October (78%).
Average rainfall in December
Karlby, Finland
- Average rainfall in December: 33mm
The wettest month (with the highest rainfall) is September (38mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in December
Karlby, Finland
- Average rainfall days in December: 11.8 days
The month with the highest number of rainy days is August (14.8 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in December
Karlby, Finland
- Average snowfall in December: 29mm
The month with the highest snowfall is January (41mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Karlby, Finland
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Karlby, Finland
- Average daylight in December: 6h and 1min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in December: 2h
The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 2h).
Average sunshine days in December
Karlby, Finland
- Average sunshine days in December: 8.9 days
The month with the most sunshine days is May (19.3 days).
The month with the least sunshine days is December (8.9 days).
Average UV index in December
Karlby, Finland
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in December
Karlby, Finland
- Average cloud cover in December: 71
The months with the most cloud cover are January and December (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Karlby, Finland
- 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).
Karlby, Finland
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