It's best to go to Rome from April to June or from late September to October.
Temperatures are usually mild at these times and the crowds aren't so intense.
It can get very hot in Rome in the summer months making the city hot, muggy and crowded in peak summer months.
According to travel guide Frommers: "The average high temperatures in central Italy and Rome are 28°C in June, 31°C in July, and 30°C in August; the average lows are 17°C in June and 19°C in July and August."
Rome: Gregg Wallace explores the capital in Gregg Wallace: Big Weekends Away (Image: Getty Images)