Winters in Civitavecchia are mild, with temperatures fluctuating between freezing and pleasant, averaging around 8-10°C. Spring arrives in March, bringing gradually warmer days, often reaching up to 22°C, while spring showers can occur throughout April and May. Summer months of June, July, and August are warm and sunny, with temperatures frequently exceeding 30°C, but cooler evenings provide relief. Autumn brings a return to milder conditions, similar to winter, with temperatures ranging from 6-29°C, making it an ideal time for outdoor activities before the cold sets in again.