Kouvola Weather in December
Kouvola in December sees very low daytime temperatures of 0°C (32°F) and nighttime lows of -5°C (23°F). Rainfall is fairly high this month at around 61 mm (2.4 in), so pack a rain jacket to stay dry.
Rainfall in Kouvola in December
The climate data from previous years indicates about 21 days of snow/rain, averaging 61 mm (2.4 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Kouvola in December
December in Kouvola sees highs of 0°C (32°F) and lows of -5°C (23°F) overnight. During December, the winter season is in full swing. Expect a distinctly cold feel throughout the day, not just overnight. With overnight lows of -5°C (23°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. You will probably experience very cold weather in this month, so dressing warmly is vital. Be sure to prepare for the chill with the right clothing.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for Kouvola.
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 Kouvola's climate page.
Kouvola Temperature in December
Min Temperature
-5°C (23°F)
Max Temperature
0°C (32°F)
Chance of Rain
71%
Precipitation
61 mm (2.4 in)
Rainy days
21 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kouvola typically stay consistent throughout December, with daily highs averaging around 0°C (32°F). Nights are very cold, with lows typically ranging from -9°C (16°F) to -4°C (25°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 Kouvola in December
Browse day-by-day weather records for Kouvola spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kouvola historical weather extremes in December
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Kouvola.
- On December 20, 2015, temperatures climbed to 10°C (50°F), marking the warmest December day on record.
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 Kouvola in December
Dress warmly and in layers for your trip to Kouvola in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Wet weather is likely, so pack waterproof gear for multiple rainy days.What To Do in Kouvola 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 Kouvola's climate page.
See the full Kouvola climate overview or explore weather in Finland.
