Perugia sits in central Italy’s hilly Apennine terrain, where a Mediterranean-to-continental transitional climate produces its heaviest rain in autumn, sometimes concentrated into short, intense, and highly localized storms.
In Umbria’s hill country, the city’s terrain can send heavy autumn rain into the Tiber River basin quickly. The steep, closely-spaced valleys typical of this part of Italy mean small rivers can rise dramatically within hours, a pattern that has produced serious floods here in past decades, and radar remains one of the best tools for anticipating it. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map