The best time to visit Rome is from Mid-March to June and also from Late-October to November. These are the times when the weather is mild, and there aren’t many tourists roaming around the city. Both the times offer the people choices to tour different parts of the city like the museums and monuments which are crowded during the peak season. If someone feels like seeing Rome in total peace, then they have to visit the city during its winter months which last between November to March.
June - August are considered the hottest time to visit the city of Rome. It also falls under the high season, when a large number of tourists flock from different countries. Everything is a little overpriced, but it is worth it if you like the nearly festive atmosphere.
September to October and April to June is the bridge between the high and low seasons. You'll get fewer tourists during this time, with nearly empty streets, low prices but a lot less of the facilities that cater to tourists. Most seasoned travellers go during this time, though it is not recommended for first-timers.
Winter is Rome is the offseason, and it is when you'll see the least tourists.
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