Keuruu Weather in September
Keuruu in September averages 15°C (59°F) during the day and 6°C (43°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Keuruu in September
Historically, approximately 17 days this month are expected to have rain, averaging 63 mm (2.5 in). This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.
Temperature in Keuruu in September
If you're visiting Keuruu in September, expect highs of 15°C (59°F) and overnight lows around 6°C (43°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to 6°C (43°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.For Keuruu itself, June, July and August generally stand out with the best 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 Keuruu's climate page.
Keuruu Temperature in September
Min Temperature
6°C (43°F)
Max Temperature
15°C (59°F)
Chance of Rain
57%
Precipitation
63 mm (2.5 in)
Rainy days
17 days
Humidity
83% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Keuruu typically drop from around 16°C (61°F) at the start of September to approximately 10°C (50°F) by the end. Nights are cold, with lows typically ranging from 3°C (37°F) to 8°C (46°F).
Average temperatures in September
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 September
Historical weather for Keuruu in September
Browse day-by-day weather records for Keuruu spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Keuruu historical weather extremes in September
Based on 49 years of weather observations in Keuruu between 1976 and 2025, these are the recorded extremes.
- The warmest day in September was on September 5, 2024, with a maximum of 26°C (79°F).
- On September 27, 1986, Keuruu saw its coldest September day with temperatures maxing out at 2°C (36°F).
- Nighttime temperatures dropped to -8°C (18°F) on September 28, 1986, marking the coldest September night on record.
- Peak precipitation in September occurred on September 1, 2002, when 23 mm (0.9 in) of precipitation was measured.
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 Keuruu in September
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Rain is likely on several days, so bring a good rain jacket.What To Do in Keuruu 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 Keuruu's climate page.
See the full Keuruu climate overview or explore weather in Finland.
