The best time to go to Nanisivik depends heavily on the type of experience you're seeking, with the short summer months offering the most accessibility and activities.
For those looking to experience the Arctic at its most accessible and "mildest," late June to mid-August is ideal. During this period, the ice has largely melted, allowing for easier travel by sea and air. You'll experience 24 hours of daylight, which is great for wildlife viewing, hiking, and exploring the landscape. This is also when most organised tours and expeditions operate, offering the best chance to see polar bears, whales, and migratory birds.
Travellers interested in winter activities and the Northern Lights should consider late February to early April. While significantly colder and darker, this period offers opportunities for dog sledding, snowmobiling, and ice fishing. The long nights provide excellent conditions for viewing the aurora borealis, a truly spectacular natural phenomenon.