Plage des Quilles, Sandy beach in Sète, France.

Plage des Quilles is a beach on the Étang de Thau in Sète, on the Mediterranean coast of France. It lies on the lagoon's eastern shore, about 600 km south of Paris, where the climate is mild, with January averages around 6 °C and July around 24 °C. The site receives roughly 968 mm of rain a year, most falling between October and February.

The beach developed alongside the Canal des Quilles, which has served as a crucial waterway connection for the port activities of Sète since its founding. The Corniche road was later built along this route to support growing connectivity between the coastal area and the harbor operations.

The beach sits on the Étang de Thau, the lagoon that separates Sète from the mainland, and its name comes from the adjacent Canal des Quilles. Bathers here look across the lagoon rather than the open sea, with the water of the étang on one side and the Corniche road above the shore.

The beach is well equipped with marked parking above the shore, which simplifies arrival and parking needs. The area is accessible for families and less experienced swimmers, with showers available and lifeguards posted during the summer months.

The beach sits on the Étang de Thau, the lagoon behind Sète known for its oyster and mussel beds, and looks across the water toward the hill of Sète itself. The lagoon is separated from the Mediterranean by the narrow strip of the Corniche, so bathers swim in sheltered, shallow water rather than open sea. The source records a mild climate, with January averaging 6 °C and July 24 °C.