Sand Has Gone: Winter Storms Strip Portugal's Beaches Back by Up to 20 Metres as State Pledges EUR 111M for Coastal Recovery

Portugal's coastline suffered 749 recorded incidents during the 2025-2026 winter storm season, with beaches retreating between 10 and 20 metres in many locations, according to data from the Portuguese Environment Agency (Agência Portuguesa do Ambiente, or APA). The government has responded with a EUR 111 million coastal recovery and protection programme.

The Damage

Almost every mainland beach recorded a significant reduction in sediment, APA found. São João da Caparica, on the south bank of the Tagus estuary near Lisbon, lost up to 14 metres of sand between January 20 and February 19 alone. In the Algarve, some beaches retreated by as much as 24 metres.

The damage extends beyond sand loss. APA documented cliff instability along stretches of the western and southern coasts, along with damage to seawalls, ramparts, and beach access infrastructure. Walkways and boardwalks — critical for both tourism and coastal protection — were destroyed or left unusable in dozens of locations.

The Recovery Plan

The government's response is structured in phases. Emergency interventions worth EUR 15 million are under way and due to be completed by the end of May 2026. A further EUR 12 million in extended repairs will follow by December. The remaining investment, bringing the total to EUR 111 million, covers longer-term measures including rebuilding beach accesses, reinforcing dune strands, stabilising cliffs, recovering walkways, and — critically — artificial beach nourishment operations that pump sand back onto eroded shorelines.

Decades of Dams Are the Root Cause

While the winter storms were the immediate trigger, experts point to a structural problem that has been building for more than 70 years. Dam construction since the 1950s has trapped the river sediment that historically replenished Portugal's beaches through natural coastal drift. Sand extraction from estuaries and river bars compounded the problem, as did the degradation of coastal dunes — the natural first line of defence against wave erosion.

Rigid seawall constructions, built to protect coastal properties, have in many cases worsened erosion by reflecting wave energy onto adjacent unprotected stretches. Accelerated sea-level rise and increasingly frequent extreme weather events are intensifying a cycle that was already well established before climate change entered the equation.

A Dune Project Offers a Model

One bright spot in the data is the performance of the Reduna project, a natural dune preservation initiative on the Caparica coast. Where Reduna's reinforced dunes are in place, the shoreline held. "Where it is in place, the dune has resisted and is still there," said Inês de Medeiros, mayor of Almada. At Fonte da Telha, however, where the project ends, a 1.5-metre ditch marks the abrupt transition from protected to unprotected coastline.

The contrast underscores the argument that nature-based solutions — working with coastal processes rather than against them — offer more durable protection than engineered barriers alone. Whether the recovery programme strikes the right balance between emergency repairs and long-term ecological restoration will determine how Portugal's coast weathers the storms to come.