Lençóis Maranhenses: The Desert with Water

Summary

Item	Detail
What it is	Dunes + freshwater lagoons
When to go	May / 2nd half of Apr (insider) or Jun-Aug (standard)
Bases	Barreirinhas, Santo Amaro, Atins
How to get there	Fly to São Luís + 4h30 transfer
Classic tour	Lagoa Azul + Bonita

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Lençóis Maranhenses National Park — eastern Maranhão coast, ~255 km by road from São Luís.
-2.53, -43.07 · OpenStreetMap

Lençóis Maranhenses is a 155,000-hectare expanse of white dunes with freshwater lagoons in Maranhão — often called "the only desert in the world that has water." A UNESCO World Heritage Site since 2024, the park is accessible from three bases: Barreirinhas, Santo Amaro and Atins.

Where Is Lençóis Maranhenses

Lençóis Maranhenses sits on the eastern coast of Maranhão, in Northeast Brazil, across the municipalities of Barreirinhas, Santo Amaro and Primeira Cruz. The main gateway is Barreirinhas, ~255 km by road from São Luís — the transfer takes ~4h via the BR-135 and the BR-402 (formerly MA-402). The nearest airport is São Luís (SLZ). Santo Amaro (a ~4-5h transfer) and Atins (a ~1h boat ride from Barreirinhas) are the other two bases.

Is it a desert? Technically, no. The region gets around 1,200 mm of rain per year — nearly five times the ~250 mm that defines a desert. That rain, from January to April, fills the lagoons between the dunes of the largest dune field in South America. Hence the nickname: the "desert" that has water.

When to Go

From January to April, rains fill the lagoons; from May to August they're 100% full under blue skies — and May (plus the second half of April) is the insiders' window: full lagoons, fewer people and low-season prices. From September onward, the lagoons dry out gradually.

For the complete month-by-month calendar — lagoon levels, crowds and price range — see the guide: When to Go to Lençóis Maranhenses.

Gateways

Base	Infrastructure	Lagoons	Best For
Barreirinhas	Full	4x4	First-timers, families
Santo Amaro	Basic	4x4 or on foot	Adventurers
Atins	Rustic	On foot or 4x4	Kiters, free spirits

How to Get There

São Luís → Barreirinhas: Transfer ~4h, R$80-150/person*

São Luís → Santo Amaro: Transfer ~3h30

Barreirinhas → Atins: Boat ~1h, R$70-150/person*. See guide →

*Prices can vary significantly depending on season and how far in advance you book.

The Tours

From Barreirinhas

Lagoa Azul + Bonita — R$100-300/person* The classic. 4x4 across the dunes, 3-4 lagoons for swimming.

Rio Preguiças — R$80-200/person* Boat down the river to Caburé.

From Santo Amaro

Lagoa das Emendadas / Betânia Less visited, more pristine. 4x4 or ATV.

From Atins and Santo Amaro

Lagoons on foot — 40min to 1h30 walk No mandatory guide. Works well until June; afterward, tours are better for reaching more distant lagoons.

For longer walks — a full day, a night along the way or the whole trek — see the guide to the crossing on foot and other walks in the Lençóis.

What You Need to Know

4x4 is mandatory for Barreirinhas/Santo Amaro (very bumpy ride)
Personal vehicles banned in the park — only walking is allowed on your own
Internet: 4G + Starlink in the villages (Atins, Barreirinhas); the signal can drop in the middle of the dunes
No marked trails — a guide is necessary for 4x4 tours
Atins: no ATM, but cards work (good internet, Starlink)

How Much Does It Cost

*Prices vary significantly by season (up to 300% difference).

Item	Price Range*
Transfer São Luís → Barreirinhas	R$80-200/person
Boat Barreirinhas → Atins	R$70-150/person
Lagoa Azul + Bonita tour	R$100-300/person
Rio Preguiças tour	R$80-200/person
Accommodation	R$80-600+/night

Estimate by profile (3-5 days, excluding flights):

Profile	Total*
Budget	R$1,000-2,500
Comfortable	R$2,500-5,000
Premium	R$5,000-10,000+

Frequently Asked Questions

How many days are ideal for Lençóis Maranhenses?

A minimum of 2 nights to see the main lagoons. 3-4 nights is ideal to explore at a relaxed pace. If you include Atins, add 2 nights.

Do you need a guide to visit Lençóis?

For 4x4 tours (Barreirinhas, Santo Amaro), yes — a guide is mandatory. For walks on foot to the lagoons (Atins, Santo Amaro), it's not mandatory — you can go on your own.

Can you drive your own car?

Not inside the park — private vehicles are prohibited. You arrive by transfer to the base (Barreirinhas, Santo Amaro or Atins) and use 4x4/boat/walking to access the lagoons.

Is Lençóis Maranhenses worth it in October?

The lagoons start drying out from September onward. In October there are still lagoons, but they're smaller and less impressive. For the full experience, aim for April to August.

What's the difference between Barreirinhas and Atins?

Barreirinhas has full infrastructure (ATM, pharmacy, more accommodation options) and access to the classic lagoons (Azul, Bonita) by 4x4. Atins is a rustic village with exclusive lagoons accessible on foot, excellent gastronomy and flat water for kite.

Where is Lençóis Maranhenses located?

On the eastern coast of Maranhão, in Northeast Brazil, across the municipalities of Barreirinhas, Santo Amaro and Primeira Cruz. The most-used base is Barreirinhas, ~255 km by road from São Luís (a ~4h transfer).

Is Lençóis Maranhenses really a desert?

Technically, no. The region receives around 1,200 mm of rain per year — far above the ~250 mm that defines a desert. The dunes look like a desert, but the rains form thousands of freshwater lagoons between them.

How far is Lençóis Maranhenses from São Luís?

It's ~255 km by road from São Luís to Barreirinhas, the main gateway — about 4h by van (up to 4h30 with pickups). To Santo Amaro, the trip takes ~3h30.