Tupuaʻi is the main island of the Austral Island group, located 640 km (400 mi) south of Tahiti. In addition to Tubuai, the group of islands include Rimatara, Rurutu, Raivavae, Rapa and the uninhabited Îles Maria. They are part of the Austral Islands in the far southwest of French Polynesia in the south Pacific Ocean. Tubuai sustains a population of 2,185 people on 45 km2 of land. Due to its southerly position, Tubuai has notably cooler weather than Tahiti.