Campania Geography & Climate

Campania's coast is built on volcanic ground. Mount Vesuvius rises directly behind Naples, and the Phlegrean Fields (Campi Flegrei), a caldera of overlapping volcanic craters west of the city, underlie much of the metropolitan area itself, including ground beneath parts of Naples and Pozzuoli. This volcanic soil is exceptionally fertile, which is one reason the plain around Vesuvius has supported dense agriculture and settlement despite the region's documented eruption history.

South of Naples, the Sorrentine Peninsula separates the Gulf of Naples from the Gulf of Salerno. Its southern flank forms the Amalfi Coast, where limestone cliffs drop steeply to the sea and towns were built into terraces cut from the slope rather than on open ground -- a layout that still limits road access and vehicle capacity today. The island of Capri, at the peninsula's tip, shares this same limestone geology.

Inland, the land rises into the Apennine Mountains, including the Matese and Picentini ranges, where the climate and economy shift toward livestock, cereals, and forestry rather than coastal tourism. Further south, the Cilento coast and its national park preserve a less developed stretch of coastline and mountain landscape, recognized by UNESCO for both its natural terrain and its Greek and medieval archaeological remains at Paestum and Velia.

The coastal strip around Naples, the Amalfi Coast, and Capri has a classic Mediterranean climate: summers are hot and largely dry, with July and August temperatures regularly reaching the low-to-mid 30s Celsius, while winters are mild and wet, rarely dropping below freezing at sea level. The sea moderates temperature swings along the entire coast, which is why lemon and olive cultivation extend right down to the shoreline on the Amalfi Coast.

Inland and at higher elevation -- the Matese and Picentini mountains, and the hill country of Irpinia and Sannio -- winters are noticeably colder, with occasional snow above roughly 800 meters, and summer nights are cooler than on the coast. This inland climate supports different agriculture, including vineyards that produce Campania's DOCG wines such as Taurasi, Fiano di Avellino, and Greco di Tufo.