San Antonio beach, Sandy beach in Pedernales, Spain.

San Antonio is a sandy beach located in Pedernales with dark-colored sand that stretches along the coastline. The beach provides adequate space for swimming and relaxing in the water.

The beach lies on the left bank of the Gernika estuary, beside the BI-631 road linking Busturia and Sukarrieta. At low tide the sand joins Sandindere island, and the currents between them can be dangerous. The beach is 350 metres wide, covering 29,000 m² at low tide and 13,000 m² at high tide.

The beach serves as a central gathering point where visitors can experience Basque coastal traditions and sample fresh seafood from local establishments.

The beach has lifeguard services, restrooms, and shower facilities for visitors. A nearby parking area makes it easy to reach the sand.

At low tide, the beach reveals a much larger shoreline than during high tide. This shift between tides significantly changes how the place looks.