In September, Jyvaeskylae typically sees daytime highs of 12.8°C and overnight lows around 4.8°C. Compared to the annual average high of 6.8°C, September runs +5.9°C.
September in Jyvaeskylae averages a daytime high of 12.8°C and an overnight low of 4.8°C.
September runs +5.9°C compared to Jyvaeskylae's annual average high of 6.8°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 12.8°C and cooler evenings around 4.8°C.