current hours are here: https://colosseo.it/en/opening-times-and-tickets/

The Colosseum opens at 8.30 am
The Roman Forum-Palatine area opens at 9.00 am

from 30 March to 30 September
8.30 am – 7.15 pm

Last entrance at 6.15 pm
The PArCo closes at 7.15 pm

8.30 – 6.30
from 1 to 25 October

8.30 – 4.30
from 26 October 2025 to 28 February 2026

Closed on 25 December 2025 and 1 January 2026