In September, Olomouc typically sees daytime highs of 17.8°C and overnight lows around 8.4°C. Compared to the annual average high of 11.4°C, September runs +6.4°C.
September in Olomouc averages a daytime high of 17.8°C and an overnight low of 8.4°C.
September runs +6.4°C compared to Olomouc's annual average high of 11.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 17.8°C and cooler evenings around 8.4°C.