The south coast of Western Australia comprises the Western Australian coastline from Cape Leeuwin to Eucla. This is a distance of approximately 1600 km, fronting the Great Australian Bight and the Southern Ocean.

Components

The Bureau of Meteorology in forecast districts break up the south coast into four sub-regions: With other authorities and departments, the region is usually broken up into smaller regions, oriented to the Great Southern regional centre of Albany and, further east, Esperance. However, some sources apply "south coast" from Windy Harbour to Mount Manypeaks as the delineating points for the coast.

Rainbow Coast

The Rainbow Coast is a tourist region name for the coast as well. It is called the Rainbow Coast because of the fast-moving weather fronts that buffet the coast from the south. This, combined with the sun being close to the northern horizon in winter, creates regular displays of rainbows in the south. The main towns of the Rainbow Coast are Albany, Denmark and Walpole. The coast has dozens of national parks and nature reserves including: Considerable numbers of government reports and environmental studies with "South Coast" in the titles are focused specifically on the coastline adjacent to the Great Southern region.

Eucla Coast

The south east coast of Western Australia is designated as the "Eucla Coast" in Bureau of Meteorology forecasts. The coastline was travelled and written up by Daisy Bates before the first world war.