Monterey whale watching: the canyon, the boats and the year-round season

Monterey whale watching owes almost everything to one piece of underwater geology. The Monterey Submarine Canyon starts close to the shoreline at Moss Landing and falls away fast: MBARI puts its walls at up to 1,700 meters (5,580 feet) high, its main channel at over 470 kilometers (292 miles) long and 12 kilometers wide at its widest, ending below 4,000 meters on the abyssal plain. In scale it is comparable to the Grand Canyon, and it sits a short boat ride from a city wharf.

That matters for a simple reason. Deep water means upwelling, upwelling means krill and bait fish, and the whales that eat them do not have to travel far offshore to find it. A boat leaving Old Fisherman's Wharf can be over serious depth in under half an hour, which is why trips here are two and a half to four hours rather than the full-day runs other deep-water destinations need.

The result is the widest species list on the California coast. Humpbacks feed here from late March into early December. Blue whales arrive in June and stay into October. Gray whales pass through in winter and spring. Bigg's killer whales hunt them. And none of it is promised — the bay has slow days like everywhere else.

Which whales, and when

1. Humpback
2. Blue whale
3. Gray whale
4. Bigg's orca
5. Dolphins

PeakGoodPossibleOff

Upwelling along the canyon edge concentrates krill and bait fish, which is why summer is the feeding season and why the bay never fully empties in winter.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Humpback	Possible	Possible	Possible	Good	Peak	Peak	Peak	Peak	Peak	Peak	Peak	Possible
Blue whale	Off	Off	Off	Off	Off	Good	Peak	Peak	Peak	Good	Off	Off
Gray whale	Peak	Peak	Peak	Good	Possible	Off	Off	Off	Off	Off	Off	Good
Bigg's orca	Possible	Possible	Peak	Peak	Peak	Possible	Possible	Possible	Good	Good	Good	Possible
Dolphins	Peak	Peak	Peak	Peak	Peak	Peak	Peak	Peak	Peak	Peak	Peak	Peak

Monterey Bay Whale Watch, which has run year-round trips from the wharf since 1992, describes the humpback season as late March to early December, with individuals that skip the migration to Mexico overwintering in the bay. Blue whales are a June-to-October animal here, tied to krill abundance. Gray whales run December through May with peak numbers between mid-January and mid-March.

The killer whale season is worth understanding before you book. Bigg's (transient) orcas hunt marine mammals and travel in groups of two to six. March to May is the peak in the bay, because that is when gray whale mothers move north with calves. September to November is the secondary window. They can appear in any month, and no honest operator will sell you a trip on the promise of them.

Gray whales change the character of the bay in winter. NOAA Fisheries counts them as one of the longest migrations of any mammal, roughly 10,000 miles round trip between the Bering Sea and Baja California, and shore-based observers have been counting the southbound animals off the central California coast in most years since 1967. Southbound whales pass Monterey from December. The northbound leg in spring is the one that brings mothers and calves close to the coast — and brings the orcas that hunt them.

There is one more thing the canyon does that you will feel rather than see. Because deep water starts close in, the species mix on a single trip can change within a mile: dolphins over the shelf, humpbacks along the canyon edge, and the occasional blue whale further out. Two boats leaving an hour apart can have entirely different days.

The boats

The fleet here is small and everything is a monohull — no zodiacs, no catamarans with underwater pods. The real choice is between a long trip on a big vessel with a heated cabin and a shorter, cheaper run. In July and August the short trip is usually enough. In February, when gray whales are spread along the coast and the swell is up, the extra hour earns its money.

Where you board

Monterey is a two-hour drive from San Francisco or San Jose down Highway 1 or Highway 101. Old Fisherman's Wharf has paid parking within sight of the boats, and the recreational trail from Cannery Row brings you in on foot or by bike. Moss Landing, 25 minutes north on Highway 1, is the mid-bay alternative — Blue Ocean's 28-seat boat and Sea Goddess's two large ones leave from the same Sandholdt Road harbor; Santa Cruz covers the north end of the same bay and has its own page — note that Stagnaro boards at the harbor rather than the Municipal Wharf.

Dress for a different climate than the one in the car park. Monterey Bay runs cold and often foggy even when the town is in sun, and the wind on an open deck at 10 knots will find any gap in your clothing. A windproof layer, a hat and closed shoes are the minimum.

Making a day of it

Most visitors pair the boat with the rest of the waterfront. The Monterey Bay Aquarium sits at the end of Cannery Row, a 15-minute walk from the wharf, and works well as an afternoon after a morning trip — the same sanctuary water, from the other side of the glass. The coastal recreation trail runs from the wharf around to Pacific Grove and Point Piños, which is the best shore-watching stretch in gray whale season.

If you are driving down from San Francisco, Highway 1 through Half Moon Bay and Santa Cruz is slower than Highway 101 but puts you past Año Nuevo and Santa Cruz. Coming up from Los Angeles, Big Sur adds two hours and a lot of coastline. Either way, book a morning boat and give yourself a night in town rather than driving both ways in a day.

What the day costs

What the day costs

Monterey Bay trip, 3–4 hoursGetYourGuide, per person	$75
Dolphin and whale trip, 3 hoursThe cheaper long option	$62
Trip with a marine guide, 2.5 hoursShorter run	$70
Wharf parkingPaid lots within sight of the boats	Extra
Warm layersThe bay runs 10–15 °C (50–59 °F) cooler than the car park	Bring them
Total	≈ $75

Partner prices come from the GetYourGuide feed and are checked regularly. Upper-deck upgrades are charged separately by some operators.

Monterey tours compared

Price check · GetYourGuide

Live prices, per person, checked regularly. Sorted from lowest.

Tour	Price	Duration	Rating
Monterey: Monterey Bay Dolphin and Whale Watching Boat Tour	$62 Lowest	3 h	★ 4.7 (2,269)	Check dates
Monterey: Whale Watching Tour with a Marine Guide	$70	2.5 h	★ 4.6 (504)	Check dates
Monterey: Whale Watching Cruise	$71.95	2.5 h	★ 4.5 (204)	Check dates
Monterey Bay: Whale Watching Tour	$75	4 h	★ 4.8 (2,499)	Check dates
Monterey: Private Whale Watching/Sailing Tour for 6	$950	3.5 h	★ 4.9 (5)	Check dates

The gap between the $62 three-hour trip and the $75 flagship is small enough that the review counts should decide it for you. The private sailing charter is priced per boat rather than per person, so it only makes sense for a group of five or six.

Who should pick which

How to read a Monterey listing

Three details on the booking page are worth checking before you pick between two similar trips. First, the stated duration: a "3 – 4 hours" listing means the captain is allowed to stay out when something is happening, which is exactly what you want. Second, whether an upper-deck seat costs extra — several wharf operators charge an upgrade fee for the best sightlines. Third, the cancellation window, because Monterey trips are canceled for weather more often than Southern California ones.

Review counts are a better signal here than star ratings. A 4.8 across more than 2,000 reviews tells you the operation is consistent across seasons; a 4.9 across five reviews tells you almost nothing.

What the rules say

Monterey Bay sits inside one of the largest marine protected areas in the United States, and the federal Marine Mammal Protection Act applies to every boat on the water.

Official information

Monterey Bay National Marine Sanctuary

Designated

18 September 1992 under the National Marine Sanctuaries Act

Size

6,094 square miles of ocean along 276 miles of shoreline, averaging 30 miles offshore

Depth

To known depths of 12,743 feet — more than two miles down

Marine mammals

At least 36 species recorded, alongside 180 seabird and shorebird species

Viewing distance

The sanctuary asks boats to 'Observe all larger whales from a safe distance of at least 300 feet (100 yards)' and to stop the vessel immediately if a whale comes within 300 feet

Time on scene

'Limit your observing time to 30 minutes or less'

Source: NOAA — Monterey Bay National Marine Sanctuary. From the official source; double-check before you go.

The sanctuary is nicknamed the "Serengeti of the Sea" by NOAA for the density of life in it, and the same upwelling that feeds the whales supports the kelp forests, sea otters and seabird colonies you will pass on the way out. Captains are expected to hold 100 yards from large whales, limit time with one group to about 30 minutes, and avoid chasing, encircling or approaching head-on. A whale that chooses to approach the boat is a different case — the engine goes into neutral and you wait.

What "guaranteed" means here

Sighting guarantee

Every Monterey Bay operator pays a blank trip in another sailing, never money. What differs is what counts as a sighting.

Blue Ocean Whale Watch

'Whale sightings guaranteed or your next trip is free', and claims 'over a 99% chance of seeing whales' in any month (blueoceanwhalewatch.com)

Sea Goddess

'Guaranteed whale or dolphin sighting or your next trip is FREE!', paid as a rain check with no expiry — dolphins satisfy it (seagoddesswhalewatch.com)

Princess Monterey

No guarantee: 'While we can't guarantee a whale sighting every trip… we will issue a rain check for another trip at a future date' (montereywhalewatching.com)

What a guarantee is not

It is never a refund, and it never covers the drive from San Francisco

Read the cancellation and sighting terms on the listing itself. No operator anywhere can promise a wild whale.

Operators on this water

Princess Monterey runs the two largest vessels on the bay: the 110-foot Princess Monterey and the 100-foot Atlantis Monterey, both with heated indoor cabins, large windows, restrooms and a snack bar, and both inspected and certified by the US Coast Guard. It is the default choice for anyone who wants a stable deck and an indoor seat.

Blue Ocean sails a much smaller boat from Moss Landing and is the operator that publishes a sighting guarantee — a free next trip, not a refund. Sea Goddess runs the two biggest boats at the same Moss Landing address, 7881 Sandholdt Road, and is the only operator there with a platform listing; despite the "Monterey" in its listing title, it does not board on the wharf. Monterey Bay Whale Watch, biologist-owned since 1992, is the other long-standing operation and departs from 84 Fisherman's Wharf.

Two more names sit behind the listings rather than in front of them. The 3–4 hour trip with the largest review count on this page is Discovery Whale Watch's, and the $62 three-hour dolphin and whale trip is Chris' Fishing and Whale Watching's; both board on Old Fisherman's Wharf.

Whichever you pick, the boat matters less here than the month. For the rest of the state, the California overview compares all eight harbors side by side.

Our call

Our call

The 3–4 hour Monterey Bay trip, in September

Late summer stacks humpbacks, blue whales and the last of the krill into the same water, and the long boat has the range to work the canyon edge properly. It is also the best-reviewed trip in the bay by a wide margin.

Skip it if A short afternoon trip in June, when the wind is up and the blue whales have often not settled in.

Check dates from $75