Tucked into a wide bend of the Tapajós River, the village of Alter do Chão reads like an ecological surprise: a slot of white sand and emerald water set against a backdrop of dense Amazonian forest. For a few months each year the river withdraws and exposes broad, glittering beaches and sandbars — an ephemeral coastline inside the rainforest that has earned Alter do Chão the media sobriquet “the Caribbean of the Amazon.” The region at a glance Alter do Chão lies across the water from the city of Santarém in the state of Pará. It is a place of seasonal extremes: during the dry season (roughly August–December) the Tapajós recedes to reveal long, warm-water beaches and islands used for swimming, sunbathing and small-scale tourism; in the wet season those same beaches vanish beneath the river as the forest and floodplain reclaim the land. That rhythm — the rise and fall of water, sand and life — shapes everything here. Wikipedia +1 The forest: a living margin Beyond the beaches, the Tapajós floodplain and the adjacent Floresta Nacional do Tapajós form a mosaic of upland forest, igarapés (narrow forest streams), and seasonally flooded igapó. This is not the endless continuous canopy most people imagine when they hear “Amazon”; it is instead a dynamic interface where trees stand on sandy terraces, palms cluster at river edges, and birds, bats and primates move between water and canopy. Small guided hikes and canoe trips into the Floresta Encantada and Flona Jamaraquá let visitors observe this edge habitat up close — especially compelling in the flood season when wildlife concentrates in elevated pockets of forest. Pisa Trekking +1 Beaches: river sand, tropical heat Alter’s beaches are river beaches: fine, pale sand and water that feels warm even in early morning. The most famous is Ilha do Amor (Island of Love), a narrow crescent that can be reached by a short boat ride or, when waters are low, by wading across shallow channels. Other notable points include Praia do Cajueiro, Ponta do Cururu and the long sandbars of Lago Verde. The character of these beaches changes with the season; the sands can contract to a trickle in the rainy months and spread into wide ribbons in the dry months, creating lagoons and shallow pools that are ideal for families and wildlife watchers alike. Lonely Planet +1 Sunset spots on the Amazon beach Sunset in Alter do Chão is a local ritual. The most cinematic vantage is the western face of Ilha do Amor and the sandbar mouths at Ponta do Cururu: as the sun dives toward the forest horizon, the Tapajós takes on copper and amethyst tones, reflecting clouds and the silhouette of distant hills. Locals and visitors gather on small boats, on the beach or atop low dunes to watch the light dissolve into the floodplain — an experience often accompanied by vendors selling cold drinks, regional snacks and live carimbó rhythms during high season. Organized “sunset tours” are widely offered: short boat cruises or shoreside gatherings timed to the last light. Tripadvisor Culture and conservation Alter do Chão is not just scenery; it is a living community with a deep cultural calendar. The Sairé festival, celebrated each September, blends indigenous rites, Catholic processions and folkloric pageantry (including the folkloric “festival of the dolphins”), and draws both local participants and visitors. At the same time, tourism pressures and seasonal visitor surges raise questions about infrastructure, waste management and the protection of fragile sandbar habitats. Community initiatives and the Floresta Nacional management aim to balance local economies with conservation and to protect the seasonal beaches that depend on natural river dynamics.