The Northern Lights, Aurora Borealis, occur in the Arctic sky on clear, dark nights. The lights are caused by solar winds interacting with the earth's magnetic field. Statistically, the northern lights in Lapland are most likely to be seen from mid-August to mid-April. Every year, the Northern lights are a common sight at Pyhä-Luosto and the past few years have been excellent for observing the northern lights. Seeing the northern lights is believed to bring good luck!