Winters in Elmshorn are typically cold and snowy, with temperatures often below freezing, averaging around 1-2°C. Spring brings a slow warming trend, with temperatures gradually increasing throughout March and April, eventually reaching averages of around 10-18°C by May and June. Summer is mild to warm, with July being the warmest month on average, but still not excessively hot. Autumn is characterized by cooling temperatures, with October marking a return to averages below 10°C, followed by another cold winter. Overall, Elmshorn's climate is relatively temperate, with moderate temperature fluctuations throughout the year.