There are a number of places to view whales on the Big Island. They are often visible on the Kohala Coast and Hilo Bay – where they can be seen from the shore. On the west side of the island, try Puukohola Heiau National Historic Site, which has great views over Kawaihae Harbor, and of course here at Horizon we have binoculars and a panoramic view of the ocean from which to spot breaching whales. Your best chance to see whales is in the morning. Be patient and look for the blow, the first indication that a whale has surfaced (when it blows air through its blowhole, forcing a spray of water into the air).
Otherwise, for a more up-close experience try a whale watching tour.