Terneuzen's winters are cool and unpredictable, with temperatures often dropping below freezing but occasionally rising above average. As spring arrives, temperatures gradually warm up, reaching highs of over 20°C by May, but still experiencing chilly nights. Summer is mild and pleasant, with temperatures rarely exceeding 30°C, while autumn brings a return to more moderate conditions, with temperatures ranging from around 10-15°C. By winter's arrival, the cycle repeats itself, with temperatures often fluctuating between freezing and mild days. Overall, Terneuzen's climate is characterized by relatively small temperature fluctuations throughout the year.