With tourism accounting for nearly 13% of its GDP, Spain is renowned for its sun-soaked coastlines. Yet the country now faces an escalating threat: coastal erosion. In 2025, alarming evidence shows that erosion is rapidly reshaping beaches in Spain —from the engineered sands of Barcelona to the natural shorelines of Sagunto. Experts warn urgent, integrated action is needed to preserve the tourist economy and coastal communities.
How Many Beaches Are at Risk?
A widespread problem unfolds across Spain:
In approximately 20% of municipalities with a coastline—101 out of 412—the beaches are at risk of disappearing entirely. In another 46%, sand loss ranges from minor to critical, and only about 30% of municipalities may see beach expansion.
In Catalonia, a 2017 regional study found 164 km of its 218 km coast under high or very high erosion risk—nearly 50% of its beaches are expected to “deteriorate.”
In Alicante on the Costa Blanca, projected retreat averages 38 metres, with some sections facing total loss.
The Costa del Sol near Málaga has lost over 200,000 m² of beach since mid-20th century, with certain areas retreating 40–45 metres between 2016 and 2022.
Although we lack a precise tally of the exact number of beaches affected in 2025 alone, these figures underscore the pervasive, nationwide nature of the erosion crisis.
Barcelona & Montgat: Beaches Under Siege
Barcelona’s famously man-made beaches—built for the 1992 Olympics—are eroding rapidly. From July 2023 to April 2024, 60 acres of shoreline vanished due to severe winter storms. In parts like Badalona to Montgat, beaches have lost over 50 metres in width, with Montgat losing 70% of its beach surface in just four years.
Planners have warned that ongoing sand replenishment efforts are no longer viable; structural responses—such as modular breakwaters or dune restoration—are urgently needed.
Sagunto’s Escape Routes Disappearing
On Spain’s eastern coast near Valencia, the beaches of Sagunto—notably Almardà, Corinto, and La Malvarrosa—are in critical condition. Community groups and municipal leaders have mobilized since early 2025:
In February, civil groups and local authorities demanded urgent regeneration efforts, warning of coastal degradation that threatens homes and dunes.
By March, protests called for immediate action, especially given delays in the required Environmental Impact Declaration (DIA) that are blocking renewal projects.
In July, repeated storms created erosional “steps” of more than 2 metres in height along La Malvarrosa, pushing the shoreline dangerously close to buildings and campsites.
Despite community pressure, authorities have yet to initiate emergency works, although regeneration contracts—including sand transfer from offshore banks—are pending.
What It Means for Spain—And What Comes Next
Widespread vulnerability across regions: Erosion is no longer localized—it impacts Catalonia, Valencia, Andalusia, Murcia, and beyond.
Tourism at stake: Beaches generate millions in revenue; their loss threatens hotel stays, rentals, and coastal lifestyles.
Need for structural intervention: Sand replacement alone is proving inadequate. Authorities and experts push for dunes, breakwaters, and long-term planning.
Political pressure rising: From Montgat to Sagunto, residents demand accountability and timely coastal protection measures.
Why It Matters
Erosion is not just a coastal issue—it’s a social and economic threat. As Spain’s beaches perish, so too might the seaside retreats, livelihoods, and traditions that currently sustain millions. Strategic, well-funded responses are essential if Spain wants its coast to endure for future generations.
