December weather forecastOulu, Finland
December
Weather in December
December is marked by the enchanting spectacle of winter in full swing. The magical phenomenon of the Northern Lights illuminates the night skies in this city. The entire city seems to be enveloped in a thick white quilt with 230mm (9.06") of average snowfall. Despite the bone-chilling winters and short days, Oulu reveals an enchanting side during this month. The Christmas vibes add a charm to the snow-clad city, ending the year on a stunning note.Temperature
The onset of December aligns with a soft reduction in the average high-temperature, gently falling from a wintry 1.1°C (34°F) in November to a freezing cold -3°C (26.6°F). Oulu's average temperature throughout the nights in December exhibits a minor decrease from daytime highs, stabilizing at -6.4°C (20.5°F).Humidity
In December, the average relative humidity in Oulu, Finland, is 93%.Rainfall
In Oulu, in December, it is raining for 6.4 days, with typically 44mm (1.73") of accumulated precipitation. Throughout the year, in Oulu, there are 117.3 rainfall days, and 434mm (17.09") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Oulu, during December, snow falls for 20.9 days and regularly aggregates up to 230mm (9.06") of snow. In Oulu, during the entire year, snow falls for 107.1 days and aggregates up to 1131mm (44.53") of snow.Sea temperature
In Oulu, Finland, in December, the average water temperature is 2°C (35.6°F).Note: During the act of swimming, this is a direct threat to life. Breathing becomes erratic and cognitive abilities decline rapidly. The importance of a specialized swimsuit to minimize thermal loss is paramount.
Daylight
The month with the shortest days is December, with an average of 3h and 54min of daylight.On the first day of December in Oulu, sunrise is at 09:49 and sunset at 14:25. On the last day of the month, sunrise is at 10:25 and sunset at 14:17 EET.
Sunshine
The month with the least sunshine is December, with an average of 1h 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 Oulu, Finland. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Oulu, Finland
- Average high temperature in December: -3°C
The warmest month (with the highest average high temperature) is July (20°C).
The month with the lowest average high temperature is January (-6.1°C).
- Average low temperature in December: -6.4°C
The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is January (-10.6°C).
Average pressure in December
Oulu, Finland
- Average pressure in December: 1005.4mbar
The month with the highest atmospheric pressure is May (1014mbar).
The month with the lowest atmospheric pressure is December (1005.4mbar).
Average wind speed in December
Oulu, Finland
- Average wind speed in December: 13.5km/h
The windiest month (with the highest average wind speed) is November (13.7km/h).
The calmest month (with the lowest average wind speed) is July (10.6km/h).
Average humidity in December
Oulu, Finland
- Average humidity in December: 93%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is June (69%).
Average rainfall in December
Oulu, Finland
- Average rainfall in December: 44mm
The wettest month (with the highest rainfall) is July (59mm).
The driest months (with the least rainfall) are April and September (25mm).
Average rainfall days in December
Oulu, Finland
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Oulu, Finland
- Average snowfall in December: 230mm
The month with the highest snowfall is March (232mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in December
Oulu, Finland
- Average snowfall days in December: 20.9 days
The month with the highest number of snowfall days is January (21.4 days).
The months with the least snowfall days are July and August (0 days).
Average sea temperature in December
Oulu, Finland
- Average sea temperature in December: 2°C
The best month for swimming (with the highest average sea temperature) is July (16.7°C).
The coldest months (with the lowest average sea temperature) are January and February (-0.6°C).
Average daylight in December /
Average sunshine in December
Oulu, Finland
- Average daylight in December: 3h and 54min
The month with the longest days is June (Average daylight: 21h and 42min).
The month with the shortest days is December (Average daylight: 3h and 54min).
- Average sunshine in December: 1h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 0min).
Average sunshine days in December
Oulu, Finland
- Average sunshine days in December: 7.4 days
The month with the most sunshine days is June (17 days).
The month with the least sunshine days is December (7.4 days).
Average UV index in December
Oulu, 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
Oulu, Finland
- Average cloud cover in December: 76
The month with the most cloud cover is February (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 43).
Average visibility in December
Oulu, Finland
- Average visibility in December: 7km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (6km).
