Berchem's climate is characterized by mild winters, with temperatures often hovering around freezing point and occasional drops below. Spring brings a steady rise in temperature, reaching averages of 18°C by June, which marks the beginning of warm summers with highs occasionally exceeding 30°C. The summer months are generally cool, with average temperatures ranging from 17 to 18°C. Autumn sees temperatures gradually decrease, returning to averages around 7°C by November. Winters are again quite chilly, but not excessively cold, with temperatures rarely dropping below -5°C or rising above 15°C.