Playón de Bayas, Sand beach in Castrillón, Asturias, Spain

Playón de Bayas is a sandy beach in the province of Asturias, on Spain's northern coast about 400 km from Madrid. It lies on the Cantabrian Sea, where the climate is mild, with an average temperature of 12 °C, around 19 °C in July and 6 °C in February, and roughly 1,525 mm of rain a year.

This beach is part of Asturias's natural coastal heritage, shaped by the tidal forces of the Cantabrian Sea. The ongoing movement of water has continued to define the landscape across generations.

The beach lies in the municipality of Castrillón, in the Principality of Asturias, about 400 km north-west of Madrid. Its name, Playón de Bayas, refers to the wide sandy expanse at the mouth of the Bayas stream, a local watercourse that reaches the Cantabrian Sea here.

Playón de Bayas lies in Castrillón, roughly 400 km north of Madrid on the Cantabrian coast. The sand is dark and the shoreline is long, with rocky sections interrupting the beach, so walkers should watch their footing at the water's edge. The climate is mild, averaging about 12 °C, with July the warmest month at around 19 °C and February the coolest at about 6 °C; rain falls throughout the year, totaling around 1,525 mm annually.

Strong waves and southeastern winds regularly sweep across this beach, making it a draw for water sports enthusiasts. These conditions have established it as a preferred location for those seeking active coastal pursuits.