Hannover's winters are typically cold and variable, with temperatures often below freezing but occasionally rising into double digits. Spring is a gradual warming period, with March and April experiencing mild temperatures, while May brings more consistent warmth. Summer is relatively cool compared to other parts of Europe, with average highs in the mid-20s Celsius, although June can sometimes see temperatures soar above 30 degrees. Autumn follows a similar pattern to spring, with temperatures fluctuating between chilly and pleasant, before dropping again in winter.