Lençóis Maranhenses

Lençóis Maranhenses is one of those places that feels like it shouldn’t exist: a field of white sand dunes in equatorial Brazil that fills every year with thousands of translucent blue and green lagoons. The dunes are pushed inland from the coast by trade winds. The rains come from January through June, collecting in the depressions between dunes where impermeable rock prevents drainage. By July the water is warm, clear, and deep enough to swim in. By November it has mostly evaporated again.

This cycle happens reliably every year, and yet it hasn’t become overrun. Getting there takes effort.

Getting There

The base town is Barreirinhas, 280km east of São Luís in the state of Maranhão. From São Luís (accessible by air from most major Brazilian cities), the road to Barreirinhas takes around 4 hours on a road that is mostly sealed but not always. Shared vans (van combis) leave São Luís’s rodoviária irregularly; it’s more reliable to book through your accommodation or a local agency.

Alternatively, some operators offer transfers directly from São Luís’s airport.

The Lagoons

There are hundreds of lagoons within the park, and the experience varies significantly depending on which you visit. The Lagoa Azul and Lagoa Bonita areas, accessible by 4WD from Barreirinhas (around 1.5 hours each way, usually in a hired jeep), are the most famous and can get crowded on weekends. Lagoa Paraíso, outside the national park boundary near Jijoca de Jericoacoara to the west, is quieter and arguably more beautiful.

The jeep trips are rough. The 4WD drives across sand, sometimes through shallow water, and there’s no shade on the dunes. Start early. Bring water, hat, and reef-safe sun protection.

Best Timing

The window is July through September. Too early (May-June) and the rains are still coming, tracks may be impassable. Too late (October-November) and water levels drop sharply. July is the sweet spot: lagoons are full, weather is clear, and the landscape is at its most surreal.

Barreirinhas

The town is small and functional rather than charming. The waterfront along the Rio Preguiças has a handful of restaurants serving grilled fish, rice, and pirão (a cassava gravy that’s ubiquitous in Maranhão). Restaurante do Paulinho near the port is unpretentious and reliably good. Pousadas range from basic fan rooms at BRL 80-120/night to air-conditioned options at BRL 200-300. There is no urgency to book anything except during the July high season.

Side Trip: Atins

The village of Atins, at the eastern entrance to the park, is reached by 4WD or by boat down the Rio Preguiças (3 hours, pleasant). It’s smaller than Barreirinhas, has less infrastructure, and gives access to a different section of the dune field including remote lagoons that rarely see tourists. Worth it if you have a spare day.

The park itself has no entry fee currently, though this may change as visitor numbers increase.