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
Viitasaari's December weather shows a modest shift in high-temperatures, falling from November's icy 1.3°C (34.3°F) to a subzero cold -2.9°C (26.8°F). Viitasaari's temperature during December nights registers a minor decrease to an average low of -6.2°C (20.8°F).Humidity
In Viitasaari, Finland, the average relative humidity in December is 93%.Rainfall
In Viitasaari, Finland, in December, it is raining for 4.6 days, with typically 30mm (1.18") of accumulated precipitation. Throughout the year, in Viitasaari, there are 83.1 rainfall days, and 298mm (11.73") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Viitasaari, in December, snow falls for 16.8 days, with typically accumulated 168mm (6.61") of snow. In Viitasaari, during the entire year, snow falls for 89.6 days and aggregates up to 819mm (32.24") of snow.Daylight
The month with the shortest days is December, with an average of 4h and 54min of daylight.On the first day of the month, sunrise is at 09:22 and sunset at 14:49. On the last day of December, sunrise is at 09:52 and sunset at 14:46 EET.
Sunshine
December has the least sunshine of the year, with an average of 0.9h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Viitasaari. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 1 in December translates into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Viitasaari in December?
What is the average humidity in December in Viitasaari?
How many days does it rain in December in Viitasaari?
How many days does it snow in December in Viitasaari?
What is the month with the shortest days in Viitasaari?
How many hours of daylight does Viitasaari have in December?
When are sunrise and sunset in December in Viitasaari?
What is the month with the least sunshine in Viitasaari?
How many hours of sunshine does Viitasaari have in December?
What is the month with the lowest UV index in Viitasaari?
How high is the UV index in December in Viitasaari?
Average temperature in December
Viitasaari, Finland
- Average high temperature in December: -2.9°C
The warmest month (with the highest average high temperature) is July (20.8°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in December: -6.2°C
The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-9.9°C).
Average pressure in December
Viitasaari, Finland
- Average pressure in December: 1007.2mbar
The month with the highest atmospheric pressure is May (1014.4mbar).
The month with the lowest atmospheric pressure is December (1007.2mbar).
Average wind speed in December
Viitasaari, Finland
- Average wind speed in December: 13.9km/h
The windiest month (with the highest average wind speed) is December (13.9km/h).
The calmest month (with the lowest average wind speed) is July (10.3km/h).
Average humidity in December
Viitasaari, Finland
- Average humidity in December: 93%
The months with the highest relative humidity are January and February (95%).
The months with the lowest relative humidity are May and June (68%).
Average rainfall in December
Viitasaari, Finland
- Average rainfall in December: 30mm
The wettest month (with the highest rainfall) is July (39mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in December
Viitasaari, Finland
- Average rainfall days in December: 4.6 days
The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in December
Viitasaari, Finland
- Average snowfall in December: 168mm
The month with the highest snowfall is January (198mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Viitasaari, Finland
- Average snowfall days in December: 16.8 days
The month with the highest number of snowfall days is January (21.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Viitasaari, Finland
- Average daylight in December: 4h and 5min
The month with the longest days is June (Average daylight: 20h and 6min).
The month with the shortest days is December (Average daylight: 4h and 54min).
- Average sunshine in December: 0h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 0h and 54min).
Average sunshine days in December
Viitasaari, Finland
- Average sunshine days in December: 12.4 days
The month with the most sunshine days is October (22.4 days).
The month with the least sunshine days is January (9.3 days).
Average UV index in December
Viitasaari, 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, November and December (UV index 1).
Average cloud cover in December
Viitasaari, Finland
- Average cloud cover in December: 79
The month with the most cloud cover is January (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 44).
Average visibility in December
Viitasaari, Finland
- Average visibility in December: 7km
The month with the highest visibility is June (10km).
The month with the lowest visibility is January (5km).
