Whale watching in Ketchikan is limited to the summer months, aligned with the Alaska cruise season. While whales are present from May to September, your chance of seeing specific species (like Orcas) varies significantly throughout the season.
For the highest density of Humpback whales and the most active feeding behavior, plan your visit in July or August. This is when the salmon runs are at their peak, drawing predator and prey into the narrow channels.
Probability: 70% Humpback / 30% Orca
Whales are beginning to arrive from their winter breeding grounds in Hawaii. Crowds are low, and the snow-capped mountains provide a stunning backdrop.
Probability: 85% Humpback / 50% Orca
Activity picks up as daylight hours reach their maximum. This is often mentioned as the best month for spotting Resident Orcas (fish-eaters).
Probability: 99% Humpback / 60% Orca
Warmest weather and maximum whale density. "Bubble-net feeding" behavior is most frequently reported during this month.
Probability: 95% Humpback / 50% Orca
Sightings remain excellent. However, this is also the rainiest month of the summer, so come prepared with quality gear.
Probability: 80% Humpback / 40% Orca
Whales begin their migration south. Still a great time for sightings, with the added benefit of fall colors appearing on the hillsides.
In Ketchikan, the "best time of day" for whales is less about the sun and more about the tide and boat traffic. Early morning tours (before 9:00 AM) often experience the calmest water and have the best chance of hearing whale songs through the hull.