The beach contains the archaeological remains of a 17th-century Jesuit church, one of the oldest colonial structures on Marajó Island.
The water composition fluctuates between freshwater and brackish depending on the Amazon River's seasonal discharge.
The village of Joanes is historically significant as a former indigenous settlement integrated into the Jesuit mission system.
During the dry season, the receding water levels expose extensive stretches of sand that are inaccessible during the rainy months.
Joanes Beach is located on Marajó Island in the state of Pará, Brazil, situated at the mouth of the Amazon River. The beach features a landscape dominated by historic ruins of the 17th-century Jesuit mission of Nossa Senhora do Rosário. Its geography is characterized by the meeting of the Amazon River's freshwater and the Atlantic Ocean's saltwater. The shoreline consists of fine, light-colored sand flanked by local vegetation. Visitors can view the remnants of colonial-era stone walls directly on the beach. Low tide significantly expands the walkable sand area, revealing tidal pools. The area is a hub for regional Marajoara culture and gastronomy. Swimming is popular during the high tide cycle.
The elevated vantage point capturing the colonial stone church ruins with the expanse of the river/ocean in the background.
Bring high-factor sun protection, as the equatorial sun is intense and natural shade is limited.
Check the local tide charts before planning to swim, as the character of the beach changes drastically between low and high tide.
Bring insect repellent, as the region's tropical climate supports high populations of mosquitoes and sand flies.
Do not attempt to swim far from the shore, as river currents and tidal changes can be powerful.
Respect the archaeological ruins by not climbing on or removing stones from the historic walls.
