Ostional Wildlife Refuge on the Nicoya Peninsula is known for olive ridley turtles and their mass nesting events, called arribadas. Plan around current conservation rules and local guidance rather than a promise that turtles will appear on your travel date.
Confirm current beach access and authorised guiding arrangements before travelling.
An arribada is a natural event, not a scheduled performance.
Follow the guide’s instructions on distance, lighting and photography.
An arribada is a mass nesting event in which many olive ridley turtles come ashore over a relatively short period. Ostional is internationally known for this behaviour. A visit can provide insight into turtle conservation, but the experience depends on the animals and the conditions.
Do not confuse nesting with hatching. They are different stages of the life cycle and should not be advertised as interchangeable experiences. Ask what has actually been observed recently and what your visit is intended to see.
Contact the refuge or an authorised local guide before setting out. Confirm whether visitor access is permitted, where to meet, the current fee, the appropriate time and any equipment requirements.
A forecast or a report from a previous week is not a guarantee. If your dates are fixed, keep another activity available rather than making the success of the whole trip depend on an arribada.
Ostional lies on the Pacific coast of the Nicoya Peninsula near the Nosara area. Road conditions and travel time vary, especially during wet weather. Ask about the current route from your accommodation and allow extra time.
Do not attempt an unfamiliar river crossing just because a navigation app suggests it. If a visit involves darkness, arrange transport with a driver who knows the current road conditions. Confirm the exact meeting point rather than navigating only to the beach name.
Let the guide explain where to stand and how to move. Do not touch turtles, block their path, crowd a nest or pick up hatchlings. Follow the current rules for lights and cameras and avoid flash photography.
Children need close supervision. A quiet group that follows instructions helps reduce disturbance and makes it easier for everyone to understand what they are observing.
Ask about walking surfaces, duration, language, transport and cancellation arrangements if access changes. Explain mobility needs in advance. A beach excursion can involve uneven sand and limited facilities.
Bring only what the guide recommends, keep belongings secure and remove all litter. A responsible visit supports local knowledge while recognising that conservation needs come first.
Use these local guides to choose an experience that fits your route and interests. For a specific enquiry, share your dates, group size and accommodation area.
No. Mass nesting is a natural event. Confirm current observations and keep your plans flexible.
Do not assume unrestricted access. Check current refuge rules and authorised guiding arrangements before travelling.
No. Nesting and hatching are separate events. Ask what is realistically possible during your visit.
This guide brings together Tempisque Expeditions’ local travel context and practical planning advice. Confirm changeable details with the relevant provider before travelling.
Updated: September 2026