One of the most common questions we hear at Harbor Breeze Cruises is, “When is the best time to go whale watching in Long Beach?” Here’s the honest answer: there is no bad time. The waters off the Southern California coast are alive with marine activity year-round, and depending on when you visit, you’ll encounter entirely different species and experiences. Think of this as your season-by-season guide to what’s out there — and when to look for it.
Winter (December – March): Gray Whale Season
Winter is one of the most beloved times for Long Beach whale watching, and for good reason. Every year, thousands of gray whales make one of the longest migrations of any mammal on Earth — traveling from their feeding grounds in the Arctic all the way down to the warm lagoons of Baja California, Mexico, where they give birth. And they pass right through our backyard.
From December through March, gray whales can be spotted in surprisingly close proximity to the Southern California coastline. They tend to hug the shore during migration, which makes them very accessible from Long Beach. Guests on our cruises regularly spot mothers traveling alongside newborn calves — a sight that never gets old.
Winter is also a great time to spot humpback whales, which can be seen in clusters, as well as minke whales from October through December. Dolphins and sea lions are abundant year-round, and winter cruises almost always include sightings of both.
Spring (March – May): The Transition Season
Spring is a beautiful in-between window that offers the tail end of gray whale migration alongside the early arrival of humpbacks. April through June is considered prime humpback season off the Southern California coast. Humpbacks are arguably the most dramatic whale to witness — they’re known for their acrobatic breaching, often launching their full 40-50 foot bodies completely out of the water. If you’re hoping to capture that iconic breach moment on camera, spring is your best shot.
The ocean also begins to warm in spring, which kicks off increased dolphin activity and sets the stage for what’s to come in summer.
Summer (May – September): Blue Whale Season
Summer is when the waters off Long Beach become home to the largest animal ever to live on Earth: the blue whale. As krill blooms populate the cold California current, blue whales arrive to feed — and they can often be found within reach of our cruises.
Seeing a blue whale for the first time is a genuinely humbling experience. At up to 100 feet long and 150 tons, no photo or video fully prepares you for the reality of one surfacing next to the boat. Our naturalists from the Aquarium of the Pacific describe it as the one sighting that consistently leaves even the most seasoned guests speechless.
Summer also brings regular sightings of fin whales, sperm whales, and occasional orca (killer whale) pods. It’s one of the most species-diverse windows of the entire year.
Fall (September – November): Lingering Giants and Early Returns
Fall is an underrated season for Long Beach whale watching. Blue whales can still be spotted into September and October, while humpbacks remain active and minke whales begin reappearing. The ocean transitions beautifully in fall, and with summer crowds thinning out, it can be one of the most peaceful times to get out on the water.
By November, the first gray whales begin making their southbound journey, and the cycle starts all over again.
Year-Round: Dolphins, Sea Lions, and More
No matter when you visit, Harbor Breeze guests are almost guaranteed to encounter dolphins. Southern California waters are home to 6-8 dolphin species, and large pods — sometimes numbering in the hundreds — are a regular fixture on our cruises. California sea lions and harbor seals also make frequent appearances throughout the year.
The bottom line? Every season brings something spectacular. Whether you’re chasing gray whale calves in January, blue whale giants in July, or humpback acrobatics in April, the waters off Long Beach consistently deliver.
Ready to see for yourself? Book your Harbor Breeze whale watching cruise at 2seewhales.com and find out what’s out there right now.
Ready for an adventure? Check our Latest Sightings Report to see if orcas have been spotted today, or Book Your Trip to join us on the water!