September and October offer quite delightful weather to enjoy Rome, whether it's a sightseeing or seaside holiday. The heat finally drops, yet it’s still warm enough to caress oneself in the sun. Rainfall becomes more frequent though. By the end of October, precipitation level reaches its peak point.
November is not that welcoming, mainly owing to a lower temperature, less sun and hence more rainy days. Rain showers are common in November, it's one of the rainiest months along with October.