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This is something you might want to add to your bucket list. August is also the perfect time to visit Finland. The days are long and the temperature is amazing.
Porvoo Weather in October
With daytime temperatures of 10°C (50°F) and nighttime lows of 3°C (37°F), October in Porvoo brings low temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 64 mm (2.5 in) falls on average.
Rainfall in Porvoo in October
You can expect rain on around 16 days based on historical patterns, with 64 mm (2.5 in) average 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 October
In October, expect low temperatures in Porvoo, with highs of 10°C (50°F) and lows of 3°C (37°F) at night. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. Nights drop to 3°C (37°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Porvoo in October
The month has fewer sunny days, with around 90 hours of sunshine.If you're looking for dry conditions and comfortable temperatures, October may not be the ideal month to visit Porvoo. Our weather planner can help you explore destinations with more pleasant weather conditions.
Porvoo Temperature in October
Min Temperature
3°C (37°F)
Max Temperature
10°C (50°F)
Chance of Rain
54%
Precipitation
64 mm (2.5 in)
Rainy days
16 days
Humidity
86% *
Sunshine
90 hours *
Percentage Sunshine
*
* Data from: Helsinki, Finland (39 KM, 24 Miles).
Porvoo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Porvoo - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Porvoo typically drop from around 11°C (52°F) at the start of October to approximately 6°C (43°F) by the end. Nights are cold, with lows typically ranging from 0°C (32°F) to 6°C (43°F).
Average temperatures in October
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 October
Historical weather records for Porvoo in October
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 October
The extremes listed below come from historical weather data collected in Porvoo from 1976 through 2025.
- On October 2, 2015, temperatures climbed to 18°C (64°F), marking the warmest October day on record.
- Nighttime temperatures dropped to -13°C (9°F) on October 20, 2002, marking the coldest October night on record.
- Peak precipitation in October occurred on October 4, 2009, when 38 mm (1.5 in) of precipitation was measured.
Best Places in Finland in October
Find out more about the weather in Finland and which places have the best travel conditions in this month. See all of Finland in October →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Porvoo in October
Cold weather calls for smart layering in October. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Rain gear is recommended, you can expect wet weather on multiple days. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.
What To Do in Porvoo in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming4/10 -
Cycling4/10 -
Walking4/10 -
Camping4/10 -
Outdoor sports4/10
Porvoo 3-Day Forecast
More climate data for Porvoo
Temperature Rainfall Sunshine Humidity
See the full Porvoo climate overview or explore weather in Finland.
Popular in October
Where to go in October - average daytime high across popular destinations.
Helsinki
10°C (50°F) Turku
10°C (50°F) Tampere
8°C (46°F) Vuokatti6°C (43°F) Rovaniemi5°C (41°F) Äkäslompolo4°C (39°F) Ruka4°C (39°F) Levi3°C (37°F) Bucket list
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