Winters in Zemun, Serbia are cold and variable, with temperatures often dropping below freezing but occasionally rising above average. Spring arrives slowly, with March and April bringing mild temperatures, while May is warm and sunny. Summer months of June, July, and August are hot, with temperatures frequently reaching 30-40°C, making it the peak tourist season. Autumn is similar to spring in terms of temperature fluctuations, with September being relatively warm before cooling down in October and November. Winters return with a chill, bringing cold snaps and occasional warmer periods.