The Luleå archipelago (Swedish: Luleå Skärgård or Lule Skärgård) is a group of Swedish islands in the north part of the Bay of Bothnia. They lie offshore from the city of Luleå and the mouth of the Lule River. A few of the islands have small permanent populations, but most are used only for recreation in the summer months. They are icebound during the winter.
Location
The north of the bay of Bothnia contains a large archipelago area. The islands in the Swedish sector make up the Norrbotten archipelago. They are divided into the Piteå, Luleå, Kalix and Haparanda archipelagos. The Luleå archipelago lies in the Luleå Municipality, part of the Norrbotten county. The port of Luleå is one of the largest in Sweden in terms of tonnage, shipping iron ore and steel.

Climate
The archipelago is only 100 kilometres (62 mi) south of the Arctic Circle, so there is daylight for 24 hours in the summer, and full moon all day in the winter. In the summer many of the islands can be reached by tour boat. In the winter they can be reached by ice road, snowmobile, skiing or skating.
The waters around the archipelago are brackish, with less the 10% of the salt content of the Atlantic. The sea freezes in January and remain frozen until March-April. Ice roadsare cleared to four inhabited islands. In total there are 60 kilometres (37 mi) of ice roads. The longest ice road in Sweden at 15 kilometres (9.3 mi) runs from Hindersöstallarna on the mainland to the islands of Hindersön, Stor-Brändön, and Långön. Normally the road is open from January to April. Vehicle weight restrictions apply.
Environment
A number of islands are in whole or part included in the Natura 2000 ecological network of the European Union, including sixteen nature reserves that cover 16,340 hectares (40,400 acres) of which 1,392 hectares (3,440 acres) is land. There is one 5 hectares (12 acres)biotope protected area. There are eight bird sanctuaries covering 1,670 hectares (4,100 acres) of which 366 hectares (900 acres) is land. These are off-limits to visitors during the months of May, June and July, when the birds are breeding. Most of the protected nature reserves and bird sanctuaries are in the outer zone.
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