Rhossili Bay is near Rhossili, a small village and community on the southwestern tip of the Gower Peninsula near Swansea in Wales. Since the 1970s it has fallen within the boundaries of Swansea. It is in an area designated an Area of Outstanding Natural Beauty. The village has a community council and is part of the Gower parliamentary constituency, and the Gower electoral ward.
Rhossili Bay curves along an arc running northwards from the village. The sandy beach is three miles long. Behind the beach just north of the village is Rhossili Down with the highest point on the Gower Peninsula (the Beacon) and a number of prehistoric remains. It is between Rhossili Down and the beach proper that the Warren is found.
At the southern end of the Bay is the outcrop of rock called the Worm’s Head. At the north is Burry Holms. These islands are accessible at low tide only. Also at low tide, it is possible to see the remains of several wrecks, wood from the wreck of the Helvetia being the most prominent when looking north from Rhossili.