Located at the entrance of the M'Clure Strait, Prince Patrick Island is uninhabited.

[3] Much later, it was named for Prince Arthur William Patrick, Duke of Connaught, who was Governor General of Canada from 1911 to 1916.

It was replaced with an automated weather station at a new location on the airstrip, downhill from the central buildings and observatory.

Mould Bay has a Polar climate (ET) with cool, intermittent summers and long, severely cold winters.

Prince Patrick Island is the setting for a work of fiction, the novel The Lost Ones (1961) by Ian Cameron (Donald G. Payne).