The beach is shaped like a 'W', a characteristic formation caused by the specific ocean currents and sand deposition.
The dirt road leading to the beach remains closed to unauthorized private vehicles, requiring a park permit or an accredited guide.
The area is home to a caiçara community, which maintains traditional fishing methods that predate modern tourism.
Due to the steep terrain of the Atlantic Forest on the eastern side of Ilhabela, this area experiences different microclimate patterns than the western coast.
The beach is one of the few places in the region where you can see the sunrise directly over the Atlantic Ocean.
Praia de Castelhanos is a secluded, W-shaped beach located on the eastern side of Ilhabela, accessible primarily via a 22-kilometer dirt road through Ilhabela State Park. The beach is a protected area known for its consistent Atlantic swell, making it a primary destination for surfing and stand-up paddleboarding. The shoreline spans approximately 1.5 kilometers of white sand, flanked by dense Atlantic Forest vegetation. It features two natural freshwater lagoons formed by the Castelhanos and Mansa rivers meeting the ocean. The cove remains largely underdeveloped, with only a small traditional fishing community residing on-site. Visitors frequently arrive by boat tours from the Ilhabela city center or by 4x4 vehicles. There is no mobile phone signal or public electricity grid in the immediate vicinity of the sand. The surrounding topography creates a natural harbor, historically used by pirates and smugglers.
The viewpoint ('Mirante') at the top of the access road provides a panoramic view of the W-shaped coastline.
Bring insect repellent, as the surrounding tropical forest results in a high presence of 'borrachudos' (sand flies).
Carry sufficient cash, as the small beach kiosks do not have credit card processing infrastructure due to the lack of internet.
Pack a waterproof bag for your belongings if arriving by schooner or speedboat, as beach landings often require wading through shallow surf.
Attempting to drive the access road in a standard low-clearance vehicle, which will result in damage or becoming stuck in mud.
Access road is subject to closure by the state park authority during periods of heavy rainfall for safety reasons.
Respect the caiçara community's private spaces and do not leave any trash, as there is no formal waste collection service on the beach.
