The Bay of Cupabia lies on the western coast of southern Corsica, specifically south of the Gulf of Ajaccio and north of the wide Gulf of Valinco. It is an open yet surprisingly tranquil coastal area, washed by the Mediterranean Sea from the west and sheltered by low, maquis‑covered slopes from the east. Above the bay rises the picturesque village of Serra‑di‑Fero, scattered across the hills and offering beautiful views over the entire coastline.

Cupabia is best known for its 1,200‑metre‑long stretch of wide, bright sandy beaches, considered among the most beautiful on the island. The sand is fine and clean, and the sea exceptionally transparent, with gentle transitions between turquoise and deep blue tones. Because the seabed deepens gradually, the bay is suitable for families, swimmers, divers, and all who seek a natural, undeveloped coastline free from mass tourism.

In terms of size and spatial extent, Cupabia can be compared to the Bay of Piran (Slovenia), although its coastline is far more natural and unbuilt. Instead of town centres, harbours, and urban structures, it is surrounded by pine groves, dense maquis shrubland, and softly undulating meadows that descend toward the sea.

During the summer months, Cupabia is popular among hikers, swimmers, and lovers of water sports. Along the shore, small seasonal cafés provide basic refreshments, yet the bay retains a sense of tranquillity and remoteness. On windy days, waves rise in the bay and attract surfers, while mornings are often completely calm—ideal for swimming or exploring the coastline.

Access to Cupabia follows a scenic coastal road that winds between hills and maquis vegetation, offering numerous viewpoints. Thanks to its location, natural beauty, and exceptionally clean beaches, Cupabia is one of those Corsican bays that captivates visitors with its simple, unspoiled coastal landscape.