Rödkallen is a small uninhabited (summer cabins are in use) Swedish island and lighthouse station located in the Bothnian Bay in the south part of Luleå archipelago.

After one hundred years in service the old lighthouse was deactivated in favor of the small modern Rödkallen södra (south) light on the roof of a pilot station.

The island has been designated an Important Bird Area (IBA) by BirdLife International because it supports breeding populations of Caspian terns and black guillemots.

[2] Rödkallen has a humid continental climate (Köppen Dfb) heavily influenced by its offshore position in a shallow and brackish sea surrounded by subarctic landmasses.

This remains during summer, but then diurnal temperature variation lowers and the mild water keeps September above the 10 °C (50 °F) mark rendering it continental rather than subarctic.

When the brackish water eventually freezes, temperatures plummet and sizeable cold waves can set in as the frigid air from the interior is no longer warmed up as it reaches the island.