Italy's historic sites and scenic landscapes are among the most rewarding places to explore in Europe, but extreme summer temperatures can make some of the country's most famous attractions challenging to visit. With much of Italy facing intense heat, visitors may want to rethink plans that involve long hours outdoors, especially during the middle of the day.

Here are ten destinations where the current heatwave can make sightseeing particularly demanding.

1. Pompeii and Herculaneum

The ancient cities of Pompeii and Herculaneum are fascinating windows into Roman history, but they can be exhausting in extreme heat. Both sites cover large areas with long walking routes, limited shade, and stone surfaces that absorb and radiate heat throughout the day. Temperatures in the region are expected to reach around 33–34°C, making visits far more demanding than usual.

2. The Roman Forum and Palatine Hill

Among Rome's most iconic attractions, the Roman Forum and Palatine Hill become especially challenging during a heatwave. Visitors spend hours walking through open archaeological remains with little protection from the sun. Reflective stone surfaces and forecast temperatures of 35–36°C can make the experience feel even hotter.

3. Ostia Antica

Often seen as a quieter alternative to Rome's major archaeological sites, Ostia Antica still requires plenty of walking under direct sunlight. The sprawling ruins offer only limited shelter, and with temperatures expected to climb to 34–35°C, visitors should be prepared for intense conditions.

4. Villa Adriana, Tivoli

Emperor Hadrian's vast villa complex is one of Italy's most impressive archaeological treasures. However, its size means visitors spend considerable time moving between monuments in exposed areas. With temperatures forecast to be around 34–35°C in Tivoli, sightseeing can quickly become tiring.

5. Paestum

Home to some of the best-preserved Greek temples in Europe, Paestum is breathtaking but largely unshaded. While temperatures of 31–33°C may seem manageable, the combination of open terrain and heat-retaining stone can make the site feel significantly warmer.

6. Siena During the Hottest Hours

Siena's medieval streets are beautiful to wander, but midday exploration can be uncomfortable during a heatwave. The city's steep inclines, brick buildings, and narrow lanes often trap heat, creating challenging conditions when temperatures approach 38°C.

7. Matera

Famous for its ancient cave dwellings and dramatic landscape, Matera is unforgettable in any season. Yet during extreme heat, navigating the Sassi district means tackling countless steps, slopes, and sun-exposed stone pathways. Temperatures are expected to reach around 32–33°C.

8. Selinunte

Selinunte is one of Sicily's most underrated archaeological sites, but it is also one of the most exposed. The vast complex offers little relief from the sun, and walking long distances across the site can be exhausting when temperatures rise to around 34°C.

9. Valley of the Temples, Agrigento

This UNESCO-listed archaeological park is among Italy's most spectacular historic attractions. Despite forecast temperatures of 29–31°C, visitors should not underestimate the conditions. The lack of shade and constant exposure to sunlight can make the site feel much hotter than the thermometer suggests.

10. Cinque Terre Hiking Trails

The hiking routes linking the villages of Cinque Terre offer some of Italy's most famous coastal views. However, steep climbs and prolonged exposure to the sun make them a tough choice during a heatwave. With temperatures near Vernazza reaching around 37°C, hikers should exercise extra caution and plan carefully.

If you're visiting Italy during this period of extreme temperatures, consider scheduling outdoor sightseeing for early morning or late afternoon. Carry plenty of water, wear lightweight clothing, use sun protection, and take regular breaks in shaded or air-conditioned spaces. Some of Italy's most remarkable destinations are best enjoyed when the weather is working with you rather than against you.