Oulu Weather in December
December in Oulu brings very low temperatures, with daytime highs of -1°C (30°F) and nights around -8°C (18°F). Expect around 50 mm (2 in) of snowfall during the month.
Rainfall in Oulu in December
Snow is expected on roughly 18 days, totalling around 50 mm (2 in) for the month. Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.
Temperature in Oulu in December
In December, Oulu gets very low temperatures, with highs of -1°C (30°F). Nights cool to around -8°C (18°F). December is a notable month of the winter season. Cold conditions tend to persist from morning through evening, so be prepared for winter weather. At -8°C (18°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. This month is extremely cold, so be sure to dress in layers to keep warm. Proper preparation can help you stay comfortable.
Sunshine in Oulu in December
The month has fewer sunny days, with around 7 hours of sunshine.
Wind Speed in Oulu in December
Wind speeds average 4 m/s (8 knots) during December. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.
Average water temperature in December
With water temperatures around 1°C (34°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Oulu. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Finland, check out our Oulu's climate page.
Oulu Temperature in December
Min Temperature
-8°C (18°F)
Max Temperature
-1°C (30°F)
Water Temperature
1°C (34°F)
Chance of Rain
61%
Precipitation
50 mm (2 in)
Rainy days
18 days
Humidity
88%
Windspeed
4 m/s (8 knots)
Sunshine
7 hours
Percentage Sunshine
5%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Oulu typically drop from around -2°C (28°F) at the start of December to approximately -5°C (23°F) by the end. Nights are very cold, with lows typically ranging from -13°C (9°F) to -6°C (21°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Oulu in December
Browse day-by-day weather records for Oulu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Oulu historical weather extremes in December
The extremes listed below come from historical weather data collected in Oulu from 1976 through 2025.
- The hottest December day on record in Oulu reached 8°C (46°F) (December 2, 2024).
Best Places in Finland in December
Find out more about the weather in Finland and which places have the best travel conditions in this month. See all of Finland in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Oulu in December
Winter clothing is essential for visiting Oulu in December. If you have a heavy coat, waterproof boots with good traction, and plenty of warm layers it's smart to bring them. Pack cloths like thermal underwear, wool socks, and insulated gloves. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 1°C (34°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Oulu in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Finland, check out our Oulu's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Oulu climate overview or explore weather in Finland.
