Lake Hāwea is located in the Otago Region of New Zealand, at an altitude of 348 metres. It covers an area of some 141 km² and is, at its deepest, 392 metres deep.
Lake Hāwea is named after a Māori tribe who preceded the Waitaha people in the area.
At its greatest extent, which is roughly along a north-south axis, Lake Hāwea is 35 kilometres long. It lies in a glacial valley formed during the last ice age, and is fed by the Hunter River. Nearby Lake Wanaka lies in a parallel glacial valley eight kilometres to the west. At their closest point (a rocky ridge called The Neck), the lakes are only 1000 metres apart.