In September, Ostrow Wielkopolski typically sees daytime highs of 19.1°C and overnight lows around 8.6°C. Compared to the annual average high of 12.5°C, September runs +6.5°C.
September in Ostrow Wielkopolski averages a daytime high of 19.1°C and an overnight low of 8.6°C.
September runs +6.5°C compared to Ostrow Wielkopolski's annual average high of 12.5°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 19.1°C and cooler evenings around 8.6°C.