Climate almanac
Seinäjoki
South Ostrobothnia, Finland · 62.79°, 22.83°
What is the weather like in Seinäjoki in September?
In September, Seinäjoki is typically 58°F (15°C) during the day and 43°F (6°C) at night. The month brings about 2.6 in (66 mm) of precipitation in total.
- Average high58°F (15°C)
- Average low43°F (6°C)
- Precipitation2.6 in (66 mm)
- Clear or mostly clear days3
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)