Porvoo Weather in January
Thinking of visiting Porvoo in January? Expect very low temperatures reaching -1°C (30°F) during the day, dropping to -7°C (19°F) at night, with some snowfall likely.
Rainfall in Porvoo in January
Past climate data indicates that roughly 18 days will see snow, totalling around 54 mm (2.1 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 Porvoo in January
Porvoo in January gets highs of -1°C (30°F) during the day and drops to -7°C (19°F) at night. Experience the winter season in January. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. With overnight lows of -7°C (19°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. It's a frigid month, so wearing warm clothing is crucial. Don't underestimate the cold; prepare accordingly.
Sunshine in Porvoo in January
This month sees fewer sunny days, with about 39 hours of sunshine, perfect for those who enjoy cooler temperatures.January in Porvoo 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 Porvoo's climate page.
Porvoo Temperature in January
Min Temperature
-7°C (19°F)
Max Temperature
-1°C (30°F)
Chance of Rain
60%
Precipitation
54 mm (2.1 in)
Rainy days
18 days
Humidity
88% *
Sunshine
39 hours *
Percentage Sunshine
*
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Porvoo typically stay consistent throughout January, with daily highs averaging around -1°C (30°F). Nights are very cold, with lows typically ranging from -10°C (14°F) to -6°C (21°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 Porvoo in January
Browse day-by-day weather records for Porvoo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Porvoo historical weather extremes in January
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Porvoo.
- The warmest day in January was on January 21, 2020, with a maximum of 8°C (46°F).
- The wettest January day on record brought 21 mm (0.8 in) of precipitation to Porvoo (January 25, 2002).
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 Porvoo in January
It's wise to bundle up for freezing conditions in Porvoo in January. If you have a winter jacket with good insulation, waterproof winter boots, thermal layers, and warm accessories it's smart to pack them. Hand and foot warmers can be lifesavers, especially during the night. Wet weather is likely, so pack waterproof gear for multiple rainy days. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Porvoo 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 Porvoo's climate page.
Temperature Rainfall Sunshine Humidity
See the full Porvoo climate overview or explore weather in Finland.
