Langøya[1] is the third largest island of Norway (outside of Svalbard), with an area of 850.2 square kilometres (328.3 sq mi).

[2] A tract of about 3,000 hectares (7,400 acres) of low-lying land in central and south-eastern coastal Langøya, consisting mainly of grassland and mudflats, and including the Vikosen nature reserve, has been designated an Important Bird Area (IBA) by BirdLife International (BLI) because it supports populations of several thousand pink-footed and barnacle geese on passage migration.

[3] Langøya has a subpolar oceanic climate (Cfc), with very mild winter for the location north of the Arctic Circle.

The warmest temperature recorded on the island by an official weather station is 31 °C (88 °F) at Kleiva in Sortland municipality in July 2018.

The weather station near Stokmarknes Airport, Skagen is located on the southern part of the island and has recorded temperature since June 1972.