In northern Sweden, above the Arctic Circle, The Midnight Sun is visible 24 hours a day. In Abisko, one of the most northern Towns in Sweden, the Midnight Sun can be seen May 27-July 18.
The Northern Lights, or Aurora Borealis, are the fluttering and bright lights that can be observed in the sky over the northernmost parts of the world. The best viewing areas in Sweden are above the Arctic Circle between September and March.
As the phenomenon is caused by energy from the sun carried towards Earth on the solar winds, its appearance cannot be guaranteed!