Scientists agree: Rising sea levels threaten this popular Italian coastal region near Tuscany

The colorful facades of Cinque Terre, one of Italy’s most iconic destinations, could face an unprecedented challenge in the coming decades. An international study warns that sea level rise driven by climate change threatens this popular coastal area in Liguria, located in northwestern Italy and recognized as a UNESCO World Heritage Site.

The research, published in the scientific journal Remote Sensing, concludes that water levels of the Mediterranean Sea could rise by as much as 3.8 feet by 2150 under the worst-case climate scenario. This increase would have a particularly significant impact on Monterosso and Vernazza, two of the most visited towns within Cinque Terre National Park, renowned for its cliffside villages and breathtaking coastal scenery.

Beaches and harbors are the most vulnerable areas

Conducted by researchers from scientific institutions in Italy, Greece, France, and the Netherlands, the study represents the first detailed assessment of the combined effects of sea level rise and storm surges along this stretch of the Italian coastline.

Experts say that smaller beaches and low-lying harbor areas are the most exposed locations. According to the researchers, even relatively modest increases in average sea level can lead to significant shoreline retreat and increase the risk of recurring flooding.

In Monterosso, the primary threats involve the harbor, docks, beaches, and certain parking areas. In Vernazza, the greatest impacts would be concentrated on beaches and tourism-related infrastructure near the waterfront, although much of the historic town center would remain relatively protected except during the most extreme events.

Waves exceeding 43 Feet in the worst-case scenarios

Researchers also caution that the threat extends beyond the gradual advance of the sea. During severe weather events, waves could exceed 43 feet in height under the most extreme climate scenario.

Such conditions could endanger infrastructure critical to the region, including the railway line that connects the five villages of Cinque Terre and serves millions of visitors each year.

The study’s authors recommend several adaptation measures, including raising dock elevations, improving drainage systems, and strengthening tourism and transportation infrastructure. Their goal is to help both public officials and residents better understand a phenomenon that is already affecting many coastal regions across the Mediterranean.

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