Exmouth is a town on the tip of the North West Cape and on Exmouth Gulf in Western Australia, 1,124 kilometres north of the state capital Pert…Exmouth is a town on the tip of the North West Cape and on Exmouth Gulf in Western Australia, 1,124 kilometres north of the state capital Perth and 2,060 kilometres southwest of Darwin. The town was established in 1967 to support the nearby United States Naval Communication Station Harold E. Holt. It is named after Exmouth Gulf. Beginning in the late 1970s, the town began hosting United States Air Force personnel assigned to Learmonth Solar Observatory, a defence science facility jointly operated with Australia's Ionospheric Prediction Service. The town is served by Learmonth Airport.