Season calendar
Most of Mexico's great wildlife experiences are seasonal, and the best ones run on permits and limited boat numbers. Pick your month first, then your activity, and book the popular ones a few months ahead.
| Activity | Where | Season | Best |
|---|---|---|---|
| Whale sharks | Isla Mujeres, Holbox, Cancún | About June to mid-September | July–August |
| Whale sharks (juveniles) | La Paz Bay | About October/November to April | Varies year to year |
| Gray whales | Ojo de Liebre, San Ignacio, Magdalena Bay | Mid-December to mid-April | February to mid-March |
| Humpback whales | Banderas Bay (Puerto Vallarta), Los Cabos | About December to March or early April | January–February |
| Monarch butterflies | Michoacán and Estado de México highlands | November to March | Late December to February |
| Diving, Caribbean | Cozumel, Riviera Maya, cenotes | Year-round | Calmer seas spring and early summer; winter cold fronts can close ports |
| Diving, Pacific islands | Socorro (Revillagigedo) | About November to May | Humpbacks January–April |
| Surfing | Puerto Escondido, Sayulita, Baja Sur | Year-round | South swells May–October |
| Volcano climbs | Iztaccíhuatl, Pico de Orizaba | November to March (dry season) | December–February |
| Raptor migration | Veracruz coast | September to November | Late September to October |
| Birding, migrants | Yucatán, San Blas, Oaxaca | November to March | December–February |
Diving and snorkeling
Mexico has two very different underwater worlds. The Caribbean side offers warm, clear water, the second-largest barrier reef system in the world and flooded caves. The Pacific and the Sea of Cortez offer big animals: mantas, sea lions, sharks and schooling fish in cooler, richer water.
Cozumel
Cozumel's walls (Palancar, Columbia, Santa Rosa) are some of the most famous dives in the hemisphere, with visibility that often tops 100 feet (30 m). Diving here means drifting with a current, sometimes a strong one, while the boat follows your bubbles. Newer divers should start on gentler sites and say so at booking. The reefs are a national park, and you pay a park fee, usually as a wristband sold through your dive shop. Cozumel and Playa del Carmen both have hyperbaric chambers. See islands.
Riviera Maya and Cancún
Puerto Morelos has a protected reef close to shore, ideal for snorkeling with a licensed boat. Off Cancún and Isla Mujeres, the underwater sculpture museum (MUSA) is shallow enough to snorkel. Akumal is the classic spot to swim with green sea turtles, with guides required in the protected bay. See Riviera Maya.
Cenote diving
The Yucatán sits on the largest known network of underwater caves on earth. With an open-water certification and some experience, you can make cavern dives with a guide, staying within sight of daylight, in cenotes such as Dos Ojos, Chac Mool, Taj Mahal and The Pit, or see the eerie hydrogen sulfide cloud at Angelita. Going beyond the daylight zone requires full cave training; untrained divers die in these systems every few years.
Socorro (Revillagigedo)
A remote volcanic archipelago about 285 miles (458 km) south-southwest of Cabo San Lucas, famous for friendly giant mantas, sharks, dolphins and, in winter, humpback whales. Mexico declared it a national park in 2017, creating North America's largest no-fishing marine reserve. Trips are week-long liveaboards from Cabo San Lucas with a crossing of about a day each way, run roughly November to May, are priced in US dollars in the thousands, and suit experienced divers comfortable in open ocean and currents.
Cabo Pulmo
A small national marine park, protected since 1995, where fish numbers have rebounded dramatically after local families gave up commercial fishing. Expect bull sharks, huge schools of jacks and sea lions. Only licensed operators from the village can take you out, fishing is banned, and visitors pay a park fee. It is about an hour and a half to two hours by road from San José del Cabo. See Los Cabos.
La Paz and the Sea of Cortez
From La Paz, boats run to Espíritu Santo Island for snorkeling with the playful sea lions at Los Islotes (closed during part of the year for the pupping season), reef snorkeling and, in season, juvenile whale sharks. Farther north, Loreto Bay National Marine Park is known for blue whales in late winter and spring. See Los Cabos and La Paz.
Insider tip
From November to March, cold fronts called nortes bring strong winds that can close the port to small boats, sometimes for two or three days. If diving is the point of your trip, book a few extra days and do not schedule your most important dive for your last day. Remember that you should wait at least 18 hours after multiple days of diving before flying home.
Snorkeling without a boat
For easy shore snorkeling, try Akumal and Yal-Kú lagoon on the Riviera Maya, Playa Chileno and Santa María Bay near Los Cabos, and Playa Balandra and the islands off La Paz. Use biodegradable sunscreen or, better, a rash guard. Never stand on coral, and do not feed fish.

Swimming with whale sharks
Swimming beside the world's largest fish, which can be longer than a school bus and feeds only on plankton, is one of the great wildlife experiences anywhere. Mexico has two seasons in two seas.
Isla Mujeres, Holbox and Cancún (summer)
From roughly June to mid-September, with sightings starting as early as mid-May and a peak in July and August, hundreds of whale sharks gather offshore north and east of the Yucatán to feed. Boats leave from Isla Mujeres, Cancún, Holbox and sometimes Playa del Carmen. The area falls within a federal biosphere reserve, and Mexico's protected areas agency, CONANP, sets the official season each year.
Expect an early start, a boat ride of one to two hours in open water, and a few short swims in turn while the sharks feed at the surface. Seas can be choppy, so take seasickness medication before you board. Tours are usually priced in US dollars, often well over $100 per person; confirm whether the park fee, snorkel gear and lunch are included.
La Paz (fall to spring)
In the Bay of La Paz, younger whale sharks feed close to shore near the El Mogote sandbar, usually from about October or November into April. The area is tightly managed: boats need permits, time with the sharks is limited, and authorities sometimes pause or close the season when sharks are scarce or conditions are poor. Book with an authorized operator in La Paz, and have a backup plan in case the season opens late.
The rules
- No touching, riding or chasing the sharks, and no flash photography.
- Only a small group from each boat in the water at a time (usually two swimmers plus a guide per shark), and keep a few yards from the body and well clear of the tail.
- No scuba; snorkeling only, often with a life jacket or wetsuit for buoyancy.
- Biodegradable sunscreen only, or none.
- Boats keep their distance and must not drive over or cut off a shark.
How to choose a responsible operator
- Shows its CONANP permit and gives you the park wristband
- Small groups, with a guide in the water with each pair of swimmers
- A clear briefing on the rules before you get in
- Captains who let the shark come to the swimmers and never chase it
- Life jackets and working radios on board
- A clear policy on what happens if no sharks are found or the port is closed
Watch out
Cheap sellers on the beach or the street sometimes sell whale shark trips on unpermitted boats. If something goes wrong on an unlicensed boat, you may have no insurance and no recourse. The State Department notes that excursion boats may not be covered by accident insurance at all, so ask the operator directly.
Whale watching
Gray whales in the Baja lagoons
Every winter, eastern Pacific gray whales migrate thousands of miles from Alaska to calve in three shallow lagoons on the Pacific side of Baja California Sur. In the protected zones, some mothers bring their calves right up to the small boats (pangas), close enough to touch, which is an experience people talk about for the rest of their lives.
Ojo de Liebre
The largest lagoon, inside the El Vizcaíno Biosphere Reserve, a UNESCO World Heritage Site. Guerrero Negro sits right at the line between the two Baja states, about 8 to 9 hours' drive south of San Diego, or reachable by small regional flights.
San Ignacio
Often called the friendliest lagoon. Most visitors stay in simple eco-camps on the shore for several nights, with fly-in packages from San Diego or overland trips.
Magdalena Bay
The most accessible from the south: about three hours from La Paz or Loreto, so a long day trip or overnight from Los Cabos.
The season runs from about mid-December to mid-April, with the most whales and calves from February to mid-March. Boats are run by local cooperatives with federal permits, and outings last about 90 minutes to two hours. Gray whale numbers dropped sharply in the early 2020s, and counts in the lagoons vary a lot from winter to winter, so ask local operators how the season is going before you commit to a long drive. Baja California Sur is Level 2 in the State Department advisory, with no restrictions; driving down through Baja California (Level 3) is fine on the main highway, with restrictions only in the Mexicali Valley. See driving.
Humpback whales
Humpbacks come to Mexico's Pacific coast to mate and give birth, and they are spectacular performers: breaching, slapping their tails and fins, and singing (some boats carry hydrophones).
- Banderas Bay (Puerto Vallarta, Nuevo Vallarta, Punta Mita): about December to March, with the bay's federal whale-watching season set each year. Many tours leave from the Nuevo Vallarta marina and Punta Mita, which are closer to the whales. See Puerto Vallarta.
- Los Cabos: about mid-December to mid-April. You can sometimes see spouts from shore, but a small boat or sailboat trip from Cabo San Lucas or San José gets you much closer. See Los Cabos.
Mexican rules limit how close boats may approach and how long they can stay with a group of whales. Pick an operator with a federal whale-watching permit, a naturalist guide and a small group; a smaller boat or a sailboat is quieter and lets you hear the whales blow.
Monarch butterflies
Every fall, millions of monarch butterflies fly up to 3,000 miles from the US and Canada to winter in fir forests in the mountains about 62 miles (100 km) northwest of Mexico City. In the sanctuaries, they hang from the trees in such numbers that branches bend, and on sunny late mornings the air fills with the sound of their wings.
When to go
The sanctuaries open roughly November through March. Late December through February is best, when colonies are settled and dense. Go on a sunny day and aim to be at the colony from late morning to early afternoon, when the butterflies warm up and fly; on cold, cloudy days they cluster and barely move. Colony size changes a lot from year to year: in the 2024–25 winter, the colonies covered about 1.79 hectares (4.4 acres), nearly double the previous winter.
The sanctuaries and the advisory
This is the one activity on this page where the State Department advisory really shapes the choice.
Estado de México sanctuaries
Piedra Herrada, near Valle de Bravo and about 2.5 hours from Mexico City, is the easiest day trip and the one most tours use. El Capulín, near Donato Guerra, and La Mesa are quieter. The state is Level 2 with no restrictions on US government employees, though the advisory notes kidnappings of US citizens have occurred and urges extra care in remote areas; go in daylight with a reputable tour or driver. See day trips.
Michoacán sanctuaries
El Rosario, near Ocampo and Angangueo, is the largest and most visited sanctuary, and Sierra Chincua is nearby. Michoacán is under a Level 4 "Do Not Travel" advisory, and US government employees are specifically barred from the Michoacán portions of the reserve. Tours do run there, but your travel insurance may not cover you, and the State Department's advice is not to go.
How a visit works
The sanctuaries are run by local communities (ejidos). You pay a modest entrance fee in cash, a local guide is required, and you can rent a horse for most of the climb. The colonies sit at roughly 10,000 to 11,000 feet (3,000–3,350 m), so expect a steep walk of 30 to 90 minutes each way, cold mornings and thin air.
- Stay on the trail, keep quiet near the colonies, and do not touch or pick up butterflies, including ones on the ground.
- No flash photography.
- Dress in layers; mornings are often near freezing.
- Bring cash for the entrance, guide, horse and the food stalls at the trailhead.

Surfing
Mexico's Pacific coast catches swell nearly all year, from south swells in the summer to northwest swells in the winter, and the water on the mainland is warm enough for boardshorts most of the year.
Puerto Escondido
Playa Zicatela, the "Mexican Pipeline," is one of the heaviest beach breaks in the world, especially from May to October; it is for experienced surfers only and breaks boards and bones. La Punta, at the south end, has a friendlier left with surf schools, and little Carrizalillo cove is a good place to learn. Oaxaca is Level 2 with no restrictions in Puerto Escondido. See Oaxaca coast.
Sayulita and Punta de Mita
Sayulita's gentle waves, crowded lineup and surf schools on the sand make it Mexico's easiest place to learn. The point breaks around Punta de Mita and La Lancha suit intermediate surfers, and San Pancho is quieter. Nayarit is Level 2. See Puerto Vallarta.
Baja California Sur
Cerritos near Todos Santos has a beginner-friendly beach with board rentals; San Pedrito nearby is for experienced surfers. Near San José del Cabo, Costa Azul works best with summer south swells. Remote Scorpion Bay (San Juanico) has long right point breaks for those who drive or fly in. See Los Cabos.
Northern Baja
An easy drive from Southern California: the reef and point breaks at K38 and K58 south of Rosarito, San Miguel point in Ensenada, and the big-wave spot off Isla Todos Santos in winter. Wear a wetsuit; the water is California-cold. See Baja Norte.
Expect rip currents, shallow rock or reef at many point breaks, sea urchins, and crowds at the famous spots. Respect local surfers and lineup etiquette. Bring a small ding-repair kit, check your airline's surfboard fee, and if you ding a rental, settle it on the spot. Hurricanes can send huge swells to the Pacific coast from June to November, along with dangerous shore break.
Sport fishing
Mexico is one of the world's great sport fishing destinations, with marlin, sailfish, tuna, dorado (mahi-mahi) and roosterfish on the Pacific side and sailfish, tarpon and bonefish on the Caribbean side.
- Cabo San Lucas: the marlin capital, with fishing year-round and the big-money tournaments in October.
- East Cape (Los Barriles, Buena Vista): roosterfish from the beach and by boat, plus dorado and tuna.
- La Paz, Loreto and Magdalena Bay: dorado in summer, yellowtail in winter, and quieter waters than Cabo.
- Puerto Vallarta and Punta Mita: sailfish, marlin and tuna offshore in Banderas Bay.
- Cancún, Isla Mujeres and Cozumel: sailfish from about late winter into spring.
- Holbox and Ascension Bay (inside Sian Ka'an): tarpon, bonefish and permit on the flats, mostly with fly-fishing lodges.
Mazatlán and Zihuatanejo are classic fishing towns, but they sit in Sinaloa and Guerrero, both under Level 4 "Do Not Travel" advisories. See Pacific coast.
Licenses and rules
Mexico's fisheries agency, CONAPESCA, requires a sport fishing license (permiso de pesca deportivo-recreativa) for every person aboard a boat that carries fishing gear, whether or not that person fishes. Licenses come by the day, week, month or year, and you can buy them online from CONAPESCA or through your charter. Many charters include them; ask, because fines fall on the passengers too.
- Daily bag limits apply per person, and billfish (marlin, sailfish, swordfish) are limited to one per angler per day. Most Cabo captains strongly encourage catch and release of billfish.
- Some species, including billfish, dorado and roosterfish, are reserved for sport fishing near the coast; commercial boats cannot sell them.
- Charters are usually quoted in US dollars. Check whether the price includes licenses, bait, drinks and fish cleaning, and plan to tip the crew, typically 10 to 20 percent.
Different from home
In the US, you usually need a license only if you fish. In Mexico, the license is tied to the boat: if there is a rod on board, everyone aboard needs one, including kids and the friend who came along to read. Taking fish home is generally allowed for personal use if you declare it to US customs; if you are driving back to California, check the state's own rules for fish caught in Mexican waters.
Hiking and volcanoes
Central Mexico has some of the highest volcanoes in North America within a few hours of Mexico City. The scenery is extraordinary, and so is the altitude. CDC notes that altitude illness becomes a risk above about 8,000 feet (2,400 m) and advises going up gradually; every peak below goes far higher than that, so build in a few days in Mexico City (7,350 feet, 2,240 m) and some practice hikes first. See health.
Iztaccíhuatl
"The Sleeping Woman" is Mexico's third-highest peak and the most popular high summit. Most climbers start at La Joya, above the Paso de Cortés visitor center (about 1.5 to 2 hours' drive from Mexico City via Amecameca), and take two days with a night at a high hut. The route is non-technical in the dry season but long, exposed and very high, and weather turns fast; go with a guide unless you have high-altitude experience. Register and pay the national park fee at Paso de Cortés, and reserve the Altzomoni shelter if you plan to sleep there. Day walks from Paso de Cortés give superb views of Popocatépetl.
Popocatépetl
Mexico's most famous volcano erupts frequently, and climbing it has been prohibited for decades. Authorities keep an exclusion zone around the crater, and ash can close the park and even Mexico City and Puebla airports. Before visiting Paso de Cortés, check the volcanic alert level from CENAPRED, Mexico's disaster prevention center, as the State Department advises.
Nevado de Toluca
The easiest way to stand inside a volcano. You can drive most of the way up and walk to two crater lakes, the Lago del Sol and Lago de la Luna, at about 13,800 feet (4,200 m), or scramble to the rim. It is about two hours from Mexico City. Expect an entrance fee per person and per vehicle, closures after heavy snow or during fire risk, and no swimming in the lakes.
Pico de Orizaba
Citlaltépetl is Mexico's highest peak and the third highest in North America. The standard route crosses a glacier, so you need crampons, an ice axe, roped glacier skills and solid acclimatization. Climbers base in Tlachichuca (Puebla) and ride a 4x4 to the Piedra Grande hut at about 14,000 feet (4,270 m). The season is roughly November to March. Register with the national park authorities before you go and climb with a certified guide; climbers die on this mountain most years.
La Malinche
A non-technical day hike from a lodge at the base and the classic acclimatization climb before Izta or Orizaba. Steep, sandy near the top, and a real test of how you handle altitude.
Potrero Chico
Near Monterrey, this canyon of towering limestone walls is one of the world's best-known sport climbing destinations, with hundreds of bolted routes. The season runs roughly October to April. Nuevo León is Level 2.
The Copper Canyon offers spectacular hiking and canyon-rim walks, but Chihuahua is Level 3 and the State Department bars its own employees from the canyon area, so read that page before planning.
Watch out
Altitude sickness can hit fit people hardest because they push too fast. A headache, nausea and poor sleep are common at first; confusion, stumbling or breathlessness at rest are emergencies that mean you go down immediately. Also check your travel insurance: many standard policies exclude mountaineering, glacier travel or anything above a set altitude.
Swimming in cenotes
The Yucatán Peninsula has no rivers on the surface. Its fresh water flows underground, and where the limestone roof collapses you get a cenote: a natural pool, from open lagoons to caves lit by a single shaft of sunlight. The water is clear and about 75–77°F (24–25°C) all year. Cenotes were sacred to the Maya, and they are still the region's drinking water supply, which is why the rules matter.
The rules
- Shower before you swim. Most cenotes have showers at the entrance and staff who check.
- No sunscreen, insect repellent, lotion or makeup, even the "biodegradable" kind, in many cenotes.
- Life jackets are required at many cenotes, especially for non-swimmers and in deep water.
- Jump only from platforms where jumping is allowed; never dive into unknown depths.
- Do not touch stalactites or rock formations, and do not enter cave sections without a guide.
- No food or drinks in the water area, and take all trash out.
What it costs and when to go
Entrance fees range from around a hundred pesos at small family-run cenotes to several hundred at the famous ones near Tulum, and many places take cash only. Most open around 8 or 9 a.m. and close in late afternoon. Go at opening, before the tour buses; the light shafts in cave cenotes are best around midday. Steps are steep and slippery, so wear water shoes.
- Around Tulum and Playa del Carmen: Gran Cenote, Dos Ojos, Cenote Calavera, and the long Ruta de los Cenotes inland from Puerto Morelos. See Tulum.
- Around Valladolid: Suytún, Ik Kil near Chichén Itzá, and the twin cave cenotes of Dzitnup (X'Kekén and Samulá). See Yucatán.
- Near Mérida: Homún, a village with dozens of family-run cenotes, often with a tricycle taxi to take you between them.
More on beaches, flags and swimming safety in beaches.
Zip lines, adventure parks and flights
Zip lines, rappelling into cenotes, ATV tours and canopy courses are everywhere in tourist Mexico. The State Department's general advice applies directly: operators often set their own safety procedures, local governments may not regulate them, and you will likely sign a liability waiver.
- Riviera Maya: Grupo Xcaret's Xplor park combines zip lines, underground rivers and amphibious vehicles; Selvática, on the Ruta de los Cenotes near Puerto Morelos, runs long zip-line circuits through the jungle.
- Puerto Vallarta: several canopy tours in the Sierra Madre foothills south of town, with zip lines over rivers and jungle.
- Los Cabos: desert canyon zip lines and ATV and camel tours inland.
- Valle de Bravo: one of the world's best-known paragliding sites, with tandem flights for beginners. Estado de México is Level 2.
- Teotihuacán: sunrise hot air balloon flights over the pyramids are very popular. Fatal accidents have happened in recent years, so choose an operator certified by Mexico's civil aviation authority with proof of insurance. See day trips.
Safety checklist for any adventure activity
- Look at the gear: helmets, harnesses and cables in good condition, two attachment points on zip lines
- Ask about weight and age limits, and how staff brake riders
- Ask whether the operator carries liability insurance and what it covers
- Skip activities in lightning, high wind or heavy rain
- Wear the helmet on ATVs; rollovers are the most common serious injury
- Do not drink before or during the activity
Birding
Mexico has more than 1,100 bird species, from flamingos and frigatebirds to quetzal-like trogons and dozens of hummingbirds, and winter adds millions of North American migrants. Hire a local bird guide for a morning; they know the calls and the spots.
Celestún and Río Lagartos
Boat trips through mangroves to see American flamingos by the thousands, plus herons, spoonbills and pelicans. Celestún is about 1.5 hours from Mérida; Río Lagartos, near the flamingo nesting grounds, is about 1.5 hours north of Valladolid. See Yucatán.
Calakmul
Ocellated turkeys, toucans, parrots and howler monkeys around a vast Maya city deep in the biosphere reserve. Stay nearby to be there at dawn.
Sian Ka'an and Cozumel
Lagoon and mangrove birds in Sian Ka'an near Tulum; on Cozumel, island specialties found nowhere else, such as the Cozumel emerald hummingbird.
San Blas
A classic North American birding town, with boat trips up the mangrove channels to La Tovara spring. Bring repellent for the tiny biting gnats.
Veracruz River of Raptors
In autumn, millions of hawks, vultures and other raptors funnel down a narrow coastal corridor north of the city of Veracruz, one of the largest raptor migrations on earth. Peak days come in late September and October.
Oaxaca highlands
The valleys and the Sierra Norte pine forests host many birds found only in Mexico, an easy add-on to a city stay. See Oaxaca.
Safety and insurance for adventure activities
Most adventure trips in Mexico go well, and the guides are often superb. Problems usually come from gaps in insurance, unlicensed operators or weather.
Insurance
- Medicare does not cover you in Mexico, and most Mexican hospitals do not take US insurance; private hospitals generally want payment before discharge.
- Buy travel medical insurance with evacuation coverage, and read the exclusions. Scuba below a set depth, mountaineering, glacier travel, paragliding and motorbikes are commonly excluded or need an add-on.
- Divers should carry dive accident insurance, such as membership coverage from Divers Alert Network (DAN), which covers hyperbaric treatment.
- The State Department notes that boats and adventure activities may not be covered by accident insurance. Ask the operator what its policy covers, and assume your own policy is what will pay.
- Some policies limit coverage in Level 4 "Do Not Travel" areas, which matters for the Michoacán monarch sanctuaries and for fishing in Mazatlán or Zihuatanejo.
On the water
- When the harbor master (Capitanía de Puerto) closes the port to small boats, no legitimate operator will go out. Anyone who offers is a warning sign.
- Insist on life jackets, and check that the boat has a radio.
- Crocodiles live in some lagoons and estuaries on both coasts, including around Puerto Vallarta, Nuevo Vallarta and Ixtapa. Swim only where locals swim.
- If the beach flag is red or black, stay out of the water. See beaches.
On land
- Tell someone your route and return time, and enroll in STEP.
- Carry water, sun protection and layers; desert heat and mountain cold both catch people out.
- Respect private and community land. The State Department warns that trespassing can bring fines or jail.
- For emergencies dial 911. For roadside help on federal highways, the Green Angels (Ángeles Verdes) answer at 078. See safety and driving.
Add it to a route in the trip builder, or ask us to plan the hotels, trains and guides for you.