Jyväskylä Weather in September
Jyväskylä in September averages 15°C (59°F) during the day and 7°C (45°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Jyväskylä in September
Looking at the last 30 years, the data shows about 17 days with rain, averaging 63 mm (2.5 in) for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Jyväskylä in September
Expect highs of 15°C (59°F) in Jyväskylä in September, with nights dropping to around 7°C (45°F). Conditions are often most pleasant around the middle of the day. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Jyväskylä.
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 Jyväskylä's climate page.
Jyväskylä Temperature in September
Min Temperature
7°C (45°F)
Max Temperature
15°C (59°F)
Chance of Rain
57%
Precipitation
63 mm (2.5 in)
Rainy days
17 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Jyväskylä 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 Jyväskylä in September
Browse day-by-day weather records for Jyväskylä spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jyväskylä historical weather extremes in September
The extremes listed below come from historical weather data collected in Jyväskylä from 1999 through 2025.
- Jyväskylä recorded its highest September temperature of 26°C (79°F) on September 5, 2024.
- Jyväskylä experienced its chilliest September day on September 23, 2014, reaching only 3°C (37°F).
- Nighttime temperatures dropped to -5°C (23°F) on September 25, 2001, marking the coldest September night on record.
- Peak precipitation in September occurred on September 10, 2020, when 30 mm (1.2 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 Jyväskylä in September
Pack for changing conditions in Jyväskylä in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days.What To Do in Jyväskylä 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 Jyväskylä's climate page.
See the full Jyväskylä climate overview or explore weather in Finland.
