Corcovado National Park keeps Sirena closed on 31 October
Published on 10/31/2026 at 18:27 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWSSirena closure and visitor access
- SINAC keeps Sirena closed in Corcovado National Park through 31 October 2026 for maintenance and heavy rain.
- San Pedrillo and La Leona remain the named alternatives for October visits in the Osa Peninsula.
- The official park page lists six sectors and requires advance reservations for visits.
Corcovado National Park in Puerto Jimenez, Costa Rica, keeps its Sirena sector closed through 31 October 2026, affecting day hikes and overnight stays during the maintenance period. The closure concerns the interior sector rather than the whole park.
Sirena closure runs through 31 October 2026
SINAC, Costa Rica's national conservation authority, says the Sirena sector is closed to visitors through 31 October 2026 because of maintenance and heavy rain on the Osa Peninsula. The decision removes both day visits and overnight stays at the sector's ranger station for the month.
The closure has a direct effect on itineraries built around Sirena. TravelHost reports that visitors with October plans must change their sector or move the Sirena part of their trip to November, while other sectors continue receiving visitors. The same report identifies San Pedrillo and La Leona as the principal alternatives.
Sirena is an interior sector, whereas San Pedrillo and La Leona lie on the park's edge. That difference matters for planning: a change of sector can also require a different boat arrangement, guide and reservation. Visitors cannot enter Sirena independently, and certified guides are required across the park's sectors, according to the report.
Six sectors shape access to Corcovado National Park
The official conservation authority's park page lists six sectors: San Pedrillo, Sirena, La Leona, Los Patos, Los Planes and El Tigre. It also states that visitors need an advance reservation, making the sector named on a booking an essential part of the visit.
The October restriction gives those sector names practical meaning. Sirena is unavailable through 31 October 2026, while the current travel report names San Pedrillo and La Leona as open alternatives for October visitors. This is not a general shutdown of Corcovado National Park, but a restriction on one of its best-known access areas.
The closure also separates the park's normal visitor experience from its administrative calendar. Sirena's ranger station normally provides lodging, meals, lockers, a nature store and a camping area, but those facilities are not available to visitors during the October closure. The change therefore affects both walking routes and overnight plans.
For travellers from Western Europe, the most useful distinction is between the protected area and the closed sector. A trip to the Osa Peninsula may still be organised around another permitted entrance, but a Sirena reservation cannot simply be used there without matching the new sector, guide and transport arrangements.
Visiting Corcovado National Park: what travellers from Western Europe should know
- Sirena is closed through 31 October 2026, with day visits and overnight stays suspended during the maintenance period.
- San Pedrillo and La Leona are the named October alternatives, but the sector, guide and transport arrangements must match the reservation.
- The park is in the Osa Peninsula near Puerto Jimenez, and access planning should account for boat transport to the selected sector.
- Corcovado National Park has six named sectors: San Pedrillo, Sirena, La Leona, Los Patos, Los Planes and El Tigre.
- Costa Rica's official language is Spanish and its national currency is the Costa Rican colón.
- Entry requirements depend on your nationality; UK travellers can check the FCDO travel advice at gov.uk/foreign-travel-advice, Irish travellers the Department of Foreign Affairs at ireland.ie.
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Frequently asked questions about Corcovado National Park
When does the Sirena closure end at Corcovado National Park?
The closure runs through 31 October 2026. TravelHost reports that Sirena access resumes in November, subject to the applicable reservation arrangements.
What has changed at Corcovado National Park?
Sirena is unavailable for day visits and overnight stays during October 2026 because of maintenance and heavy rain. San Pedrillo and La Leona are identified as alternatives.
Where is Corcovado National Park and how do you get there?
The park is on Costa Rica's Osa Peninsula near Puerto Jimenez. Visitors must reserve in advance and arrange access, a certified guide and transport for the selected sector.
