evidence: Join Sky & Telescope for a one-week Iceland tour and the chance to see the Northern Lights! With our tour partner Spears Travel and a local Icelandic guide, we’ll explore this fascinating island’s unique culture and geology during the day, then each night we’ll scan the sky for Iceland's famed aurora borealis. Watching the fantastic colors of the Northern Lights dance across the arctic sky is an unforgettable experience, and Iceland is one of the best places to see them. Late September to early October is a good time for aurora-watching, as the nights are full and dark, and the weather prospects are better than deep winter.