Kuiu Island: Pristine Wilderness in Alaska’s Tongass National Forest

Discovering Kuiu Island

Kuiu Island sits in the Alexander Archipelago of Southeast Alaska, entirely within the Tongass National Forest. Its 758 square miles of old-growth rainforest, rugged coastline, and sheltered bays attract visitors seeking solitude and genuine wilderness rather than developed attractions.

Getting There

Access is by boat or floatplane from the small communities of Petersburg, Wrangell, or Kake. No roads or ferry terminals exist on the island itself. Most travelers charter a vessel or aircraft for day trips or multi-day expeditions; the journey crosses open water and requires careful weather planning.

Best Time to Visit

June through early September offers the mildest temperatures, longest daylight, and peak salmon runs that draw brown bears and bald eagles to the streams. Shoulder months of May and late September can still provide good conditions with fewer visitors, though rain and cooler temperatures become more frequent.

What to See and Do

Wildlife viewing centers on Sitka black-tailed deer, coastal brown bears, and marine mammals such as humpback whales and sea otters in the surrounding waters. Anglers target king, coho, and sockeye salmon plus halibut from skiffs or the shore. Sea kayakers explore protected coves and tidewater estuaries where harbor seals haul out. Short hikes along game trails or abandoned logging roads lead into moss-draped cedar and spruce stands. Hunters with proper permits pursue deer and bear in designated seasons.

Wildlife and Nature

The island’s low human population supports healthy predator-prey dynamics. Visitors often observe bears fishing at creek mouths during salmon season. Birders note marbled murrelets, pigeon guillemots, and bald eagles nesting along the shoreline. The surrounding waters form part of the Frederick Sound feeding grounds for humpbacks.

Nearby Attractions

From Kuiu’s eastern shore, clear days reveal the snowy peaks of the Coast Range on the mainland. Kupreanof Island lies directly north across Keku Strait, while the larger Prince of Wales Island sits to the south. Many multi-day boat trips combine Kuiu with these neighboring islands for extended exploration of the Inside Passage.