The best time to go to Fort Chipewyan depends entirely on what you'd like to experience, as the seasons offer vastly different activities.
For those interested in experiencing the natural beauty and wildlife of Wood Buffalo National Park, the summer months, particularly July and August, are ideal. The weather is generally warm and pleasant, making it superb for boat tours on Lake Athabasca, fishing, and exploring the park's trails. Wildlife viewing is at its peak, with many migratory birds present. This period is also when you can best appreciate the long daylight hours, often extending until late in the evening.
If you're keen to witness the Northern Lights and experience a true Canadian winter, then late autumn to early spring, from November to March, is the time to visit. The long, dark nights and clear skies provide excellent conditions for aurora borealis viewing. Winter activities like ice fishing, snowshoeing, and cross-country skiing are also popular. Do be prepared for very cold temperatures during this season.
For a unique perspective on the community and its connection to the land, consider visiting during shoulder seasons like late May or early September. These times offer a quieter experience with fewer visitors, often with pleasant weather and opportunities to observe the transition of the landscape.