Oreti Beach is the central bay of three lying on the Foveaux Strait

Foveaux Strait

Foveaux Strait separates Stewart Island/Rakiura, New Zealand's third largest island, from the South Island. Three large bays, Te Waewae Bay, Oreti Beach and Toetoes Bay, sweep along the strait's northern coast, which also hosts Bluff township and harbour. Across the strait lie the Solander...

 coast of Southland, New Zealand, the others being Te Waewae Bay

Te Waewae Bay

Te Waewae Bay is the westernmost of three large bays lying on the Foveaux Strait coast of Southland, New Zealand, the others being Oreti Beach and Toetoes Bay...

 and Toetoes Bay

Toetoes Bay

Toetoes Bay is the easternmost of three large bays lying on the Foveaux Strait coast of Southland, New Zealand, the others being Te Waewae Bay and Oreti Beach. Thirty kilometres in length, the bay is the southern end of the Awarua Plain, an area of swampy land stretching inland for about fifteen...

. Twenty-six kilometres in length, the bay lies between the town of Riverton

Riverton, New Zealand

Riverton or Aparima is a small town at the south of the South Island of New Zealand. It is in the Southland region and lies at the western end of Oreti Beach, 30 kilometres west of Invercargill on the Southern Scenic Route. It is approx. 45 km from Stewart Island and provides a safe harbour...

 and the outflow of the Aparima River

Aparima River

The Aparima River is located in Southland, New Zealand. It has its headwaters in the Takitimu Mountains, south of Lake Te Anau, and flows south for 100 kilometres before entering Foveaux Strait near Riverton at the north end of Oreti Beach....

 in the northwest, and the estuary of the Oreti River

Oreti River

The Oreti River is one of the main rivers of Southland, New Zealand, and is 170 kilometres in length.The Oreti has its headwaters close to the Mavora Lakes between Lake Te Anau and Lake Wakatipu, and flows south across the Southland Plains to its outflow into Foveaux Strait at the southeastern end...

 in the southeast.

The city of Invercargill

Invercargill

Invercargill is the southernmost and westernmost city in New Zealand, and one of the southernmost cities in the world. It is the commercial centre of the Southland region. It lies in the heart of the wide expanse of the Southland Plains on the Oreti or New River some 18 km north of Bluff,...

is located on the Oreti River five kilometres east of the bay.