In September, Konstanz typically sees daytime highs of 19.0°C and overnight lows around 10.1°C. Compared to the annual average high of 12.9°C, September runs +6.1°C.
September in Konstanz averages a daytime high of 19.0°C and an overnight low of 10.1°C.
September runs +6.1°C compared to Konstanz's annual average high of 12.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 19.0°C and cooler evenings around 10.1°C.