Tortuguero turtle nesting guide: seasons, ethics, and logistics

Why Tortuguero matters: the global importance of one beach

Tortuguero Beach stretches for roughly 35 kilometres along Costa Rica’s northern Caribbean coast, accessible only by boat or small plane. No road reaches it. That isolation — an accident of geography — has made it one of the most important sea turtle nesting sites in the Western Hemisphere.

The Caribbean Conservation Corporation (now Sea Turtle Conservancy) has operated at Tortuguero since 1955, making it the longest continuous sea turtle monitoring program in the world. The data collected here underpins much of what scientists know about green turtle migration, nesting behaviour, and population recovery. The green turtle population nesting at Tortuguero had declined catastrophically by the 1950s; today it is recovering, thanks in large part to that monitoring work and the legal protections that followed.

This guide covers everything you need to plan a responsible visit — including the species calendar, how the night tours work, what ethical behaviour looks like, and the honest logistics of getting there.

Species calendar: who nests when

Green turtles (Chelonia mydas) — July to October

Green turtles are the species Tortuguero is most famous for, and they nest in extraordinary numbers. The season runs from approximately July through October, with the peak in August and September. On a busy peak-season night, dozens of females may come ashore simultaneously.

Females return to the beach where they were born (natal beach fidelity is precise), nest multiple times per season (usually 3–5 clutches), and lay approximately 100 eggs per clutch. The eggs incubate for about 60 days, so a female nesting in August will have hatchlings emerging in October.

Green turtles are listed as Endangered on the IUCN Red List globally, though the western Atlantic population nesting at Tortuguero is considered one of the stronger sub-populations. They are so-named for the colour of their fat, not their shell.

Leatherback turtles (Dermochelys coriacea) — March to July

Leatherbacks nest earlier in the year than greens. The season at Tortuguero runs roughly March through July, with peak activity in April and May. Leatherbacks are the largest reptile on earth — adults weigh 300–900 kg and measure up to 2 metres in length. Seeing one come ashore is a genuinely overwhelming experience.

Leatherbacks are critically endangered. The eastern Pacific population has declined by over 90% since the 1980s; the Atlantic population, which includes Tortuguero, is in better shape but still under threat from longline fishing bycatch and beach development. Ethical viewing of leatherbacks is particularly important precisely because of this.

Hawksbill turtles (Eretmochelys imbricata) — year-round, peak May–October

Hawksbills nest at Tortuguero throughout the year, though numbers are smaller than greens. They are distinguished by their narrow, pointed beak and their strikingly patterned shell — the same shell that historically made them targets of the tortoiseshell trade. Hawksbills are Critically Endangered. Seeing one nest is a privilege that fewer visitors experience than they realise.

How the night tours work

All turtle watching at Tortuguero requires an authorised guide. Solo beach access at night is prohibited — this is enforced, not just suggested, and the reason is legitimate: untrained visitors cause significantly more disturbance than guided groups.

The process works like this:

1. You book a night tour through your lodge or a licensed local guide (see below)
2. You gather at the assembly point at dusk (usually around 8pm, but timing varies by season and moon phase)
3. Guides rotate between beach sectors with small groups (8–12 people maximum per group under current regulations)
4. When a turtle is confirmed nesting — confirmed means the female is settled and has begun laying eggs — your group approaches quietly
5. You observe for approximately 20–30 minutes, then return

There is no guarantee of seeing a turtle. On peak-season nights in August and September, the chances are excellent (upwards of 80–90% on a good night). In the shoulder months of July and October, success rates are lower. The guides communicate by radio and move groups to wherever nesting females have been confirmed.

Turtle watching in Tortuguero, Costa Rica

Tour providers

Every lodge in Tortuguero village arranges night tours. Prices run from approximately $40 to $55 per person depending on the operator. The key distinction is whether your guide holds a current SINAC certification for turtle monitoring. Ask directly before booking.

The Sea Turtle Conservancy also offers research-oriented experiences where visitors assist with data collection — tag checking, measuring, and egg counting. These are limited in number and book out months in advance, but they represent the gold standard of participatory conservation tourism.

Tortuguero: sea turtle tour

What ethical turtle watching looks like

The following rules apply at Tortuguero and are enforced by SINAC rangers:

• No white light of any kind on the beach at night — use red-filtered flashlights only; your guide will provide these or instruct you
• No flash photography — ever, under any circumstances
• No phone screens facing the turtle — the blue/white light causes disorientation
• Stay behind the turtle while it nests — approach only from the rear
• Do not touch the turtle unless your guide specifically instructs it during a monitoring exercise
• No running on the beach; quiet voices at all times
• Do not place anything on the turtle or position yourself in its path back to the ocean
• Follow guide instructions immediately — if told to move, move

Why does light matter? Sea turtles — particularly hatchlings — use light to orient toward the ocean. Artificial white light on the beach causes them to move inland rather than seaward, which is fatal. It also causes nesting females to abort the process and return to the water before laying.

The guides in Tortuguero are excellent and experienced. Trust them. The visitors who cause problems are almost always those who override guide instructions for a better photo.

Tortuguero: turtle nesting night tour

Getting to Tortuguero

There are two ways to reach Tortuguero: by boat or by small plane. There is no road.

By boat: The most common route from San José involves a shuttle bus to the boat launch point at La Pavona or Caño Blanco, then a 1.5–2 hour canal and river journey through Tortuguero National Park. Total journey time from San José: about 4–5 hours. Several tour operators run organised transfers with guaranteed hotel pickup; this is the most practical option for first-timers.

By plane: Sansa and Aerobell fly to Tortuguero from San José (Juan Santamaría Airport). Flight time is approximately 35 minutes. Return fares start from about $100. This is significantly faster and worth the cost if you have limited time. The aerial view of the canal network through the park is spectacular.

From Tortuguero village, everything is done on foot or by small boat. The village is tiny — you can walk end to end in 10 minutes.

Where to stay

Tortuguero village

The village has a range of small lodges, guesthouses, and a few budget options. Casitas Tortuguero, Manatus Hotel, and Turtle Beach Lodge are mid-range options with reliable turtle tour arrangements. For budget travellers, Miss Junie’s and several small family-run guesthouses offer basic rooms with home-cooked meals.

All-inclusive lodges on the park side

Several larger lodges sit across the canal from the village, on the edge of the national park. Aninga Lodge, Laguna Lodge, and Tortuga Lodge (owned by Costa Rica Expeditions, one of the country’s oldest eco-tourism operators) offer all-inclusive packages that include transfers, meals, and turtle tours. Prices run from about $200 to $450 per person per night all-in. These are worth considering if you want a hassle-free experience.

Day trip from San José

It is technically possible to visit Tortuguero on a day trip from San José, including the boat journey and a canal tour — but you cannot do a night turtle tour on a day trip. The night tours require staying overnight.

Canal boat tours during the day

Tortuguero National Park is not only about turtles. The canal network is one of the richest wildlife corridors in Central America. Morning boat tours through the canals routinely produce sightings of river otters, caimans, Jesus Christ lizards (basilisks), fresh-water turtles, boat-billed herons, kingfishers, green and black poison dart frogs, and — with luck — manatees, jaguars (very rare), and tapirs.

The Tortuguero National Park guide covers canal tour logistics in detail.

Tortuguero: turtle nesting tour in their natural habitat

Common tourist trap warnings

“Day tour includes turtle watching” is a red flag. Legitimate turtle watching is a night activity requiring prior arrangement. No reputable operator sells a same-day day-to-night combination as a single product, because the night tour slots are managed separately by SINAC.

Unlicensed beach guides sometimes approach visitors in the village offering cheaper turtle tours. While not all are bad, the guarantee of a SINAC-certified guide matters for both the quality of your experience and the protection of the turtles. Pay the extra $10-15 for a certified tour.

Hatchery visits are offered by some operators. Hatcheries at Tortuguero are generally legitimate conservation operations — eggs are moved from vulnerable beach sections to protected hatcheries to prevent predation and flooding. Hatchery release events (watching hatchlings enter the sea) are genuinely moving and perfectly ethical. Check that any hatchery you visit is affiliated with the Sea Turtle Conservancy or a registered conservation body.

Frequently asked questions about turtle nesting at Tortuguero

How many nights should I spend in Tortuguero?

Two nights is the minimum to do the destination properly — one turtle tour attempt and one full morning canal tour. Three nights allows a second turtle tour attempt (useful if the first was rained out or unsuccessful) and time to hike the Cerro Tortuguero trail during the day.

Is it worth visiting Tortuguero outside turtle season?

Yes, for the canal wildlife. The bird watching is excellent year-round. The reptile and mammal sightings on morning canal tours remain strong even in the off-season. However, the main draw is undeniably the turtles, so off-season visitors should adjust expectations.

Can children go on the turtle night tours?

Yes, with appropriate preparation. Children should understand the rules around silence and no light before arriving. Most lodges recommend ages 8+ for night tours simply because young children struggle with the wait times and the strict quiet requirement. Infants and toddlers are not appropriate for these tours.

Is the journey to Tortuguero difficult?

It requires planning but is not physically challenging. The boat journey through the canals is scenically spectacular and genuinely enjoyable. The difficulty is logistical — no road access means you cannot simply drive in, and transfers need to be pre-arranged. Once in the village, everything is walking distance.

What is the rainy season like in Tortuguero?

The Caribbean coast has a different rain pattern than the Pacific. Tortuguero is genuinely wet — it receives 5,000+ mm of rain per year, more than almost anywhere else in Costa Rica. Rain falls year-round, with relative drying in September and October. Pack waterproofs regardless of month. The canals are navigable in all conditions, and the turtle tours continue in light rain (the guides provide plastic ponchos).

Do I need a reservation to enter Tortuguero National Park?

Tortuguero does not currently require advance SINAC reservations for park entry in the same way that Poás does. However, night turtle tours through SINAC-licensed guides are limited in group size, and peak season (August–September) often sees high demand. Book your night tour at least 2–3 days in advance when in village, or arrange through your lodge before arrival.

How much does a turtle tour cost?

Expect to pay $40–$55 per person for a standard SINAC-permitted night tour arranged through a local certified guide or lodge. All-inclusive lodge packages incorporate this into the nightly rate. The Sea Turtle Conservancy research volunteer programmes range from $80–$120 per session. Do not pay below $35 — it almost certainly means an unlicensed guide.

What is the Sea Turtle Conservancy and can visitors support it?

The STC (formerly Caribbean Conservation Corporation) is the NGO that established turtle monitoring at Tortuguero. It runs a visitor centre in the village, offers educational exhibits, and sells merchandise with proceeds supporting conservation. Visiting the centre and making a donation is a straightforward way to support the science that has made this population recovery possible.

Related guides

The broader context of responsible wildlife travel in Costa Rica starts with wildlife watching ethics — applicable at Tortuguero, at Marino Ballena, and at every other wildlife site in the country. If you are also interested in leatherback nesting on the Pacific coast, Playa Grande in Las Baulas National Park is the complementary destination. For the full Caribbean trip, including canal transfers and the village atmosphere, the 7-day Caribbean itinerary maps out an efficient routing.

Green sea turtle nesting tour