google（见内）可以春秋去。极光强度高才好看，如果在那赶上大爆发就好了，那些tour也是把游客拉到远离城市灯光的地方

Iceland is a top destination for viewing the Northern Lights, also known as aurora borealis, due to its open spaces and minimal light pollution. The best time to see them is late September to early April when the nights are long and dark, especially around the equinoxes in September and March. However, sightings have been reported as early as August and as late as April.