Most of September is warm and beautiful, and beach weather. And the beaches are surprisingly uncrowded. Ostia Beach is only 30 minutes from Rome by train. Aaahh
Through the end of October, catch the nightly spectacular light show on the via dei Fori Imperiali, showcasing the life and times of Rome's first Empreror, Augustus.
The Roma Estate along Lungotevere, which is the Rome Summer festival along the Tiber river, goes through 15 September. Enjoy strolling, and sampling some gelato, drinks, dinner, live music, shopping and more!
September skies are blue with wispy clouds, and the weather is not too hot - perfect for exploring Rome on foot. This is the Roman Forum, as seen from the via dei Fori Imperiali
From April through end of October (excluding August), you can visit the Vatican Museums at night on Fridays.
Crazy September skies in Rome. Love this rooftop view from Capitoline museums!
Through the end of October, visit the Colosseum from 8-midnight Mondays, Thursdays, Fridays and Saturdays .
Sunday September 6 2015 visit most of Rome's archeological sites, and many museums, for free!
Celimontana park in Rome - a lovely way to pass some time in September