Praia de Grussaí is a beach located in the municipality of São João da Barra, in the northern region of Rio de Janeiro state. The beach is part of a coastline known for water sports, specifically surfing and stand-up paddleboarding. The overall character of the area is that of a coastal town with golden sands and turquoise waters, attracting a significant number of tourists during the summer season, primarily from the surrounding region and the states of Rio de Janeiro and Minas Gerais. The town is calm and tranquil. For paddlers launching from shore, the beach offers direct access to the open Atlantic Ocean. A notable geographical feature in the broader area is the proximity to the Pontal de Atafona, the meeting point of the Rio Paraíba do Sul and the sea, which is a point of interest for visitors. The nearby Laguna de Grussaí is also referenced as an attraction. The coastline in this region is dynamic; scientific studies indicate that at Praia de Grussaí, south of Atafona, a process of progradation, or sediment accumulation and shoreline advancement, is prevalent. This suggests the beach and nearshore environment may be subject to changing sandbars and channels. The area is also part of the documented range for Southern Right Whales in the southwestern Atlantic Ocean, with a sighting recorded off Praia de Grussaí, indicating the potential for marine wildlife encounters during certain seasons. Local amenities include a gastronomic polo and varied commerce near the beach area, which could provide services for visitors. Access to the region is primarily via the BR-356 highway connecting to Campos dos Goytacazes, and local transportation includes buses and alternative transport linking the center to districts like Grussaí and Atafona.