The Northern Lights are often referred to as the 'the biggest light show on earth,' and during your visit to Greenland, if at all possible, you shouldn't miss this incredible natural spectacle. If planning to visit for the sole purpose of seeing the Aurora Borealis, then make sure to travel in winter. There's a good chance of seeing the Northern Lights anytime between November and March, although December through February are the best months because the nights are clearer. The Northern Lights are visible across Greenland. Qaqortoq (south), Ittoqqortoormiit (east), and Kangerlussuaq (west) provide the best views.
