Explore the 7 Islands of the Sept-Îles Archipelago: Complete Guide
Nestled in the Gulf of St. Lawrence, the Sept-Îles Archipelago, located just off the city of Sept-Îles, consists of seven islands of exceptional natural beauty. These islands offer a rare mix of beaches, cliffs, marine forests, Indigenous heritage, and seabird sanctuaries. From Hôtels Gouverneur Sept-Îles, you’re perfectly positioned to embark on an adventure and discover this unique destination. In this guide to exploring the 7 Islands of Sept-Îles, each island is presented as its own world, ready to be explored, experienced, and savoured.
Grande-Basque Island: Gateway to the Sept-Îles Archipelago
Easily accessible from the Sept-Îles marina, Grande-Basque Island is often the starting point for exploring the archipelago. A shuttle and several cruise operators provide trips to this island.
Open generally from mid-June to early September, the island boasts six stunning white-sand beaches, 12 km of hiking trails, and activities focused on geology, marine biology, and ornithology. Imagine walking on fine sand, breathing in the salty bay air, following a naturalist guide to spot endemic birds, then relaxing on a quiet beach for ultimate serenity… Grande-Basque Island is a true haven for disconnecting.
Petite-Basque Island: Nature Immersion and Marine Panoramas
Neighboring Grande-Basque, Petite-Basque Island stands out with its steeper terrain and remarkably clear waters, making it perfect for diving and hiking enthusiasts. Hike along rugged ridges and marvel at crystal-clear underwater landscapes. Boat and kayak excursions allow you to approach the island safely while enjoying the unique light of the St. Lawrence.
We recommend bringing a mask and snorkel for a closer connection with marine life. Early booking is advised, as trips are limited to the peak season.
Manowin Island: Indigenous Heritage and Dramatic Geology
Manowin Island, part of the Sept-Îles Archipelago, holds strong historical significance: its name comes from the Montagnais language of the First Nations and means “where eggs are collected.” Excavations in 1986 revealed flint fragments, Indigenous hearths, and projectile remnants.
Naturally, the island features the most striking terrain in the archipelago, characterized by limestone formations from an ancient warm seabed, a glimpse into a fascinating geological past.
Visiting Manowin is stepping into living history: walk on land shaped by ancient seas, admire expansive views of the Gulf of St. Lawrence, and immerse yourself in the island’s spirit. Access is via organized tours or private boat from Sept-Îles. Less crowded, its authenticity is part of the charm.
Corossol Island: Protected Sanctuary of the Sept-Îles Archipelago
At the peak of the archipelago’s nature experiences lies Corossol Island. Its name recalls the wreck of a French ship in 1693; its lighthouse, built in 1870 and automated in 1988, watches over one of Eastern Canada’s largest seabird refuges. Species include the little auk, common eider, dovekie, black guillemot, double-crested cormorant, and Atlantic puffin, as well as herring gulls, glaucous gulls, black-legged kittiwakes, and Leach’s storm-petrel.
To preserve this sanctuary, landing on the island is prohibited. Cruises allow visitors to get very close by water, providing a unique birdwatching and marine spectacle. This experience is a call to respect nature and marvel at its beauty: glide over the waters, hear the silence broken by bird calls, and feel the vastness of the Northern Horizon.
Grosse-Boule Island: Archipelago Giant and Mariculture Farm
Dominating the archipelago in size and elevation, Grosse-Boule Island blends nature with agri-tourism experiences. It hosts the Purmer Mariculture Farm, where visitors can learn about mussel and scallop farming through dedicated boat excursions.
The captain guides your group through the bay, explaining seaweed and shellfish, then lands you on the island to explore its beaches, a trail, and a lookout with sweeping archipelago views. Ideal for families or groups seeking an educational and memorable escape.
Petite-Boule Island: Steep Cliffs and Seabird Refuge
Among the archipelago’s gems, Petite-Boule Island is distinguished by its nearly spherical shape and towering cliffs plunging into the St. Lawrence. It hosts the second-largest seabird refuge in the archipelago (after Corossol Island).
It’s a spectacular spot for contemplation: from shore or sea, observe birds nesting on cliffs, hear the wind sweep across geological formations, and feel the raw beauty of the Côte-Nord. Access is possible via boat excursions, but the island remains protected, adding to its magical allure.
De Quen Islets: Expedition Finale and Historical Reminder
The final stop in your exploration of the Sept-Îles Archipelago is the De Quen Islets (formerly “Cayes de l’Ouest”). Covering about 12 hectares, these islets honour Father Jean Dequen, who celebrated the first mass in Sept-Îles in 1651.
A boat trip around the islets makes for a poetic finale: watch the light on the rocks, its reflection on calm waters, and feel transported in time, yet still near Sept-Îles. Even without landing, the marine loop is enough to complete your immersion in this extraordinary archipelago.
Why You Should Visit the Sept-Îles Archipelago
Choosing to stay in Sept-Îles means opting for an off-the-beaten-path adventure where nature meets hotel comfort. The archipelago offers:
- A diversity of landscapes: golden beaches, towering cliffs, marine forests, and clear waters.
- Varied activities: swimming, hiking, diving, birdwatching, boating, and mariculture interpretation.
- Easy access from your hotel base in Sept-Îles: cruises, boat shuttles, and guided tours are organized from the city.
It’s the perfect place to disconnect from city life, immerse yourself in a grand setting, and return with lasting memories. Book your escape now and stay at a hotel just minutes from the sea and marina: Hôtels Gouverneur Sept-Îles.
FAQ — Everything You Need to Know About the Sept-Îles Archipelago
How do I get to the Sept-Îles Archipelago?
Private boat operators offer shuttles and cruises from the Sept-Îles marina. Contact operators: Croisières Sept-Îles (418 409-5522), G.W.D Excursions (418 409-4377), Purmer (418 960-4915).
When is the best time to visit the Sept-Îles Archipelago?
The excursion season typically runs from mid-June to early September.
Should I book in advance?
Yes, some trips are limited by capacity, weather, and season. Early booking is recommended.
Can I land on all islands in the archipelago?
No. Some islands, like Corossol, are protected refuges and landing is prohibited. They can, however, be approached by boat.
What activities are available on the archipelago?
Hiking, swimming, diving, birdwatching, marine cruises, and agri-tourism visits (mariculture farm) are all offered.
What should I bring or keep in mind?
Bring hiking shoes, windproof clothing, swimwear, a camera, and check the weather before your trip; the sea can be unpredictable.
