Port Erin is a delightful small town in the south west corner of the Isle of Man, which curves gently around Port Erin Bay, flanked by cliffs to the north and south. The town climbs steeply up from the shore, but then sits on a fairly level shelf which stretches inland, indeed right across the narrow neck to the south coast. In recent years, housing estates have grown up to the east of the town centre, and are slowly stretching out to nearby Port St Mary, the two towns now almost forming a single urban area. The promenade is dominated by large modern apartment blocks, making the most of the sea views, but behind these is a bustling town centre and all of the facilities a small town needs.
The main road into the town is the A5, which comes in from the east, having started in the island capital of Douglas, and passed the airport and Castletown. The A7 provides a shorter, but slower route to Douglas, as it passes through more villages on the way. Indeed, until 1987, the two routes were swapped with the A7 following the quicker coastal route. The A32 comes into the town centre along the Promenade from the north, having started on the A7, and taking an even slower route through the small villages that are almost just suburbs of Port Erin, while to the east, the A29 skirts the edge of the town as it heads for Port St Mary.