Whale watching in Cabo San Lucas: season and rules

27 October 20267 min read

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The Arch (El Arco) rock formation at Cabo San Lucas

Short answer: in the most recent official notice we read, whale watching in Cabo San Lucas was authorised from 15 December 2025 to 30 April 2026. Boats must stay at least 60 m (small boats) or 80 m (larger ones) from humpback whales, move slowly, and never swim, dive or feed the animals. This guide explains the season, the rules written in Mexico’s official norm, and what a small-group trip from the Cabo San Lucas marina is like. It relies on official documents, and what we could not confirm is flagged.

Quick answers

When: the season is set every year by SEMARNAT, Mexico’s environment ministry. The 2025–26 notice ran from 15 December to 30 April.
Which whales: the official norm names the Los Cabos region as one of the places where humpback whales concentrate in winter.
How close can the boat get: 60 m for boats under 10 m, 80 m for boats of 10 to 27 m, and a waiting distance of 240 m.
Can you swim with them: no. Swimming, diving and fishing are forbidden during whale watching.
How long is a trip: about 2 hours on our small-group trip.

Why Cabo San Lucas

Humpback whales spend the winter in Mexico’s Pacific waters to breed, and the norm that governs whale watching, NOM-131-SEMARNAT-2010, says they are “especially concentrated” in the Los Cabos region of Baja California Sur. Cabo San Lucas also has a short, scenic coastline: the same boat that goes out to look for whales passes El Arco (the Arch), Lover’s Beach and Land’s End on the way, so the trip is both a wildlife outing and a sightseeing ride.

Humpback whale and a small whale-watching boat in front of El Arco · Photo: our listing (Bókun)

When is the whale season?

The season is not a fixed calendar date. SEMARNAT publishes a notice every year with the dates for each protected area. The latest we read, dated 2 October 2025, authorised watching in the Cabo San Lucas Flora and Fauna Protection Area and in Cabo Pulmo National Park from 15 December 2025 to 30 April 2026. We have not yet read the 2026–27 notice, so use those dates as the usual pattern and check them before you plan. The description of our trip also speaks of a migration season from December to April.

We found no official data on which months inside the season are best, and no official sighting rates, so we do not claim any. Wild animals do not follow a schedule, and no honest operator can guarantee a sighting.

What Mexican law requires from boats

The rules sit in NOM-131-SEMARNAT-2010, published in the Diario Oficial on 17 October 2011. For humpback whales, the text says:

Observation distance: at least 60 m for boats under 10 m long and 80 m for boats of 10 to 27 m. All boats wait at 240 m until it is their turn.
Speed: under 5 knots (9 km/h) in the observation area and 2 knots (4 km/h) inside the observation zone, always slower than the slowest whale in the group. Sudden acceleration or braking must be avoided.
Crowding: a maximum of four boats around the same whale or group, and up to 30 minutes with each group.
Approach: diagonally, from the rear side, when whales are travelling; with the engine in neutral when they are not moving. If a whale approaches the boat, the engine stays in neutral until it leaves.
Mothers and calves: boats must not come between a mother and her calf, or approach whales that are mating or giving birth.
If the whales are disturbed: when animals dive more and more, change direction suddenly or interrupt feeding, mating or nursing, boats must move away slowly.
Forbidden: harassing or blocking the whales; fishing, diving, swimming, water skiing and parachuting; jet skis, kayaks, canoes, inflatables, submersibles and bananas for watching whales; throwing waste, oil or fuel into the sea; feeding the animals; carrying pets on board (guide dogs excepted).
Information: at the start of every trip, the operator must brief passengers on how to behave and display signs in visible places.
Shallow water: in areas shallower than 10 m, whale watching may be done only with boats under 10 m.

This is why a jet-ski tour to El Arco is a ride along the coast, not a whale-watching trip.

What our whale-watching trip is like

Our whale watching in Cabo San Lucas lasts about 2 hours, in a small group of up to 12 travellers per the listing. The boat sails along the coast past El Arco, Lover’s Beach and Land’s End and then out into the Pacific, with a local guide who explains whale behaviour, migration and conservation. Life jackets and safety equipment are included.

Departures: several times a day (the calendar shows 8:00, 10:00, 12:00 and later).
Not included: food and drinks, hotel pickup and the dock fee.
Accessibility and health: not wheelchair or stroller accessible, and not recommended for pregnant travellers, according to the listing.
Cancellation: free up to 24 hours before departure.

Sightings are not guaranteed. The crew follows the legal distances and does not chase the animals.

Lover’s Beach, with El Arco in the background · Photo: our listing (Bókun)

Other ways to see the coast

Boat ride to El Arco and Lover’s Beach: about 2 hours 45 minutes, with the sea lion colony, Pelican Rock and about two hours of free time on the beach. It is the option outside the whale season.
Private sunset catamaran: a private two-hour cruise with open bar and photo stops at El Arco, Lover’s Beach and Land’s End; the listing says whale watching is included in season. It leaves from Gate D at Luxury Avenue Los Cabos.
Private yacht to El Arco: a 32 ft yacht for 1 to 8 guests, with snorkelling gear.
Snorkel catamaran with open bar and the sunset cruise with live mariachi, for a sociable afternoon or evening.

For the town, the marina and how to get there, read the Cabo San Lucas guide. If you travel later in the winter, see also humpback whales in Puerto Vallarta.

A catamaran at sunset in front of the rock formations of Cabo San Lucas · Photo: our listing (Bókun)

How to be a good passenger

Listen to the briefing: it is a legal requirement.
Keep your voice down and your hands inside the boat; do not throw anything into the water.
Do not ask the crew to get closer; the distances above protect the animals and you.
Bring a hat, sun protection and a layer: it is usually cooler on the water than on land.