In 2026, the Archaeological Park of Pompeii is open nearly every day of the year, but it has three fixed closure days: January 1st (New Year's Day), May 1st (International Workers' Day), and December 25th (Christmas Day). Unlike many museums in Europe that close on Mondays, Pompeii remains open seven days a week outside of these specific holidays. The park typically operates on seasonal hours; from April to October, it is open from 9:00 AM to 7:00 PM, while from November to March, it closes earlier at 5:00 PM. It is important to note that the "last entry" is always 90 minutes before the official closing time. In 2026, Pompeii has implemented a daily visitor cap of 20,000 people to protect the ruins and manage crowds. This means that while the site might be "open," tickets can sell out weeks in advance for popular dates. If you plan to visit on a weekend or during the peak summer months, simply knowing the site is "open" isn't enough—you must also secure a specific entry time slot via the official ticketing portal to ensure you aren't turned away at the gate.