The Grussaí Lagoon is a remnant of the coastal system formed by the historical path of the Paraíba do Sul river.
The area is part of the 'Farol de São Thomé to Açu' coastal stretch, a region significantly affected by littoral drift and shifting sands.
Local geography includes a unique 'Icua' environment, where freshwater bodies are separated from the Atlantic Ocean by narrow sandy strips.
The beach is part of a municipality that hosts one of the largest summer festival circuits in the Northern Rio de Janeiro state.
Praia Grussaí is a coastal destination in São João da Barra, Rio de Janeiro, characterized by its combination of oceanfront beach and adjacent freshwater lagoons. The area features a long stretch of Atlantic coastline known for strong surf and currents. The Grussaí Lagoon serves as a calmer alternative to the ocean, often used by families and those seeking sheltered water. The region is integrated into the larger Açu/Grussaí coastal system, which is influenced by the nearby Paraíba do Sul river delta. During the summer months, the area experiences high tourist traffic from regional visitors. The landscape is primarily sandy with dunes transitioning into residential beachfront infrastructure. Recent geographical shifts in the area have led to concerns regarding coastal erosion and sandbank movement along the shoreline.
The narrow sandy strip dividing the Atlantic Ocean from the freshwater Grussaí Lagoon.
Exercise extreme caution when swimming in the ocean due to strong undertows and inconsistent rip currents.
Prioritize the lagoon side if you are traveling with children or prefer calm water.
Carry sun protection and hydration, as the shade along the beach strip is minimal.
Swimming in the ocean near the river mouth or in areas marked with red flags for strong currents.
Beach casual; remove all trash to help preserve the fragile dune ecosystem.
