In September, Karlovy Vary typically sees daytime highs of 16.9°C and overnight lows around 7.1°C. Compared to the annual average high of 10.7°C, September runs +6.2°C.
September in Karlovy Vary averages a daytime high of 16.9°C and an overnight low of 7.1°C.
September runs +6.2°C compared to Karlovy Vary's annual average high of 10.7°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 16.9°C and cooler evenings around 7.1°C.