Jämsä Weather in January
January in Jämsä averages -3°C (27°F) during the day and -9°C (16°F) at night. Around 49 mm (1.9 in) of snowfall is typical for this time of year.
Rainfall in Jämsä in January
Past climate data indicates that roughly 21 days will see snow, totalling around 49 mm (1.9 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Jämsä in January
Temperatures in Jämsä in January top out at -3°C (27°F) and drop to -9°C (16°F) overnight. The month of January belongs to the winter season. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. With overnight lows of -9°C (16°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. This month is known for its biting cold, so make sure to dress warmly. Proper preparation can help you stay cozy.January in Jämsä can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
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 Jämsä's climate page.
Jämsä Temperature in January
Min Temperature
-9°C (16°F)
Max Temperature
-3°C (27°F)
Chance of Rain
71%
Precipitation
49 mm (1.9 in)
Rainy days
21 days
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Jämsä typically stay consistent throughout January, with daily highs averaging around -3°C (27°F). Nights are very cold, with lows typically ranging from -12°C (10°F) to -9°C (16°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Jämsä in January
Browse day-by-day weather records for Jämsä spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jämsä historical weather extremes in January
The extremes listed below come from historical weather data collected in Jämsä from 1976 through 2025.
- The warmest day in January was on January 28, 1992, with a maximum of 8°C (46°F).
Best Places in Finland in January
Find out more about the weather in Finland and which places have the best travel conditions in this month. See all of Finland in January →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Jämsä in January
Winter clothing is essential for visiting Jämsä in January. 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.What To Do in Jämsä in January
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 Jämsä's climate page.
See the full Jämsä climate overview or explore weather in Finland.
