The best time for whale watching in the San Juan Islands is the summer season. Between June and August the number of whale sightings in particular Orca whales has historically been the strongest. However, if you are not able to travel to the San Juan Islands during this historic whale watching season do not fear! There are plenty of opportunities to see a Humpbacks, Sea Lions and the Biggs Killer Whale during the shoulder season and even winter months. There are opportunities for whale watching in the San Juan Islands in all seasons, but your best chance for seeing the Southern Resident Killer Whales is between June and August.