Pietarsaari Weather in September
September in Pietarsaari typically sees daytime highs of 15°C (59°F) and nighttime lows of 8°C (46°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Pietarsaari in September
Typically around 16 days of rainfall are expected, averaging 65 mm (2.6 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Pietarsaari in September
If you're visiting Pietarsaari in September, expect highs of 15°C (59°F) and overnight lows around 8°C (46°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 Pietarsaari's climate page.
Pietarsaari Temperature in September
Min Temperature
8°C (46°F)
Max Temperature
15°C (59°F)
Chance of Rain
54%
Precipitation
65 mm (2.6 in)
Rainy days
16 days
Best Places in Finland in September
Find out more about the weather in Finland and which places have the best travel conditions in this month. See all of Finland in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Pietarsaari in September
The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days.What To Do in Pietarsaari in September
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 Pietarsaari's climate page.
See the full Pietarsaari climate overview or explore weather in Finland.
