Nieuwegein's winters are generally mild, with temperatures rarely dropping below freezing and averaging around 3-5°C. As spring approaches, temperatures rise gradually, reaching an average of 11°C in May and 18°C by June, which marks the beginning of warm summers with highs often above 25°C. The summer months see relatively stable temperatures, ranging from 8-27°C, while autumn brings a return to milder conditions, averaging around 7-12°C before dropping again in winter.