SINAC closes Sirena at Corcovado National Park through 31 October

Corcovado National Park has closed the Sirena sector from 1 to 31 October 2026, affecting visitors planning day trips or overnight stays from Puerto Jimenez. The park is locally administered through Costa Rica’s conservation authority, SINAC, and other sectors remain available during the closure.

The restriction removes access to the interior Sirena station during one of the wettest periods on the Osa Peninsula. San Pedrillo and La Leona provide the main alternatives for travellers who still plan to visit the park in October.

Sirena closure changes October access at Corcovado

A report published on 3 October 2026 stated that SINAC had closed Sirena for the full month. The stated reasons are regular maintenance and heavy rain, while the wider park remains open through selected sectors. Details of the October closure place the restriction at Sirena and specify that both day visits and overnight stays are unavailable.

The closure affects the station rather than every access point. San Pedrillo and La Leona are identified as open alternatives, so an October itinerary needs a sector, guide and transport arrangement that match one another. Sirena access resumes from 1 November 2026, subject to the relevant reservation arrangements.

Osa Peninsula setting explains the sector distinction

SINAC describes the park as part of the Osa Peninsula in southwestern Costa Rica. Its official sector page records 42,570 terrestrial hectares and 5,375 marine hectares, with forests, beaches, coral reefs and freshwater marshes within the protected area. SINAC’s Sirena sector information also places the park in Puntarenas Province.

The national park was created by executive decree published on 31 October 1975 and later expanded in 1980. This history gives the October maintenance period a direct connection with the infrastructure that supports access to a large protected landscape, rather than making the closure a general regional travel notice.

The October restriction also follows a visitor-capacity change announced for Sirena. A September report said the maximum was restored to 366 people per day when the sector is operating, but that figure does not reopen Sirena during October. The September capacity decision recorded separate limits for other sectors.

Visiting Corcovado National Park: what travellers from Western Europe should know

• The Sirena sector is closed from 1 to 31 October 2026 for maintenance and heavy rain.
• San Pedrillo and La Leona remain the named October alternatives, while Sirena access resumes on 1 November 2026.
• The park lies on Costa Rica’s Osa Peninsula in Puntarenas Province, with access points linked to Puerto Jimenez and other regional gateways.
• SINAC records forest, beaches, coral reefs and freshwater marshes across 42,570 terrestrial hectares and 5,375 marine hectares.
• 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.

Searching for Corcovado National Park on social platforms

These links open searches for Corcovado National Park on each platform.

Frequently asked questions about Corcovado National Park

What is closed at Corcovado National Park in October 2026?

The Sirena sector is closed from 1 to 31 October 2026 for maintenance and heavy rain. The wider park is not entirely closed.

Which sectors can visitors use during the Sirena closure?

San Pedrillo and La Leona are the named alternatives for October 2026, with arrangements subject to the relevant sector and reservation rules.

Where is Corcovado National Park and how do you get there?

The park is on Costa Rica’s Osa Peninsula in Puntarenas Province. Puerto Jimenez is one of the regional gateways used for visits to the protected area.