Winters in Konstanz are cold and variable, with temperatures often dropping below freezing but occasionally rising into the mid-teens. Spring is a slow warming period, with temperatures gradually increasing over several months before stabilizing in late May. Summers are mild to warm, with highs rarely exceeding 30°C and lows usually staying above 10°C. Autumn brings a return to cooler temperatures, similar to those of winter, but with less extreme fluctuations.