As there are different types of whales, they can't all be seen at the same time. Grey whales can be seen during the months of April and May. Beluga whales can be seen during the whole year, but most likely time to see them is in the spring and fall. Humpback whales are usually seen in June and July, while Blue whales are usually seen in July and August. One of the most popular whales is the Killer (or Orca) whale, and they can be seen between early May and early June.