10/04/2026
The Lençóis Maranhenses National Park, located in the state of Maranhão in northeastern Brazil, is one of the most unique landscapes on Earth. Spanning over 155,000 hectares, it consists of vast, rolling white sand dunes that, during the first half of the year, fill with rainwater to create thousands of crystal-clear turquoise and emerald lagoons.
Here is an essential guide to understanding and visiting this natural wonder:
1. The Phenomenon of the Lagoons
Unlike a traditional desert, Lençóis Maranhenses receives significant rainfall. This water is trapped between the dunes by a layer of impermeable rock beneath the sand, creating a seasonal paradise.
• The Peak Season: The best time to visit is from June to August. By early June, the rains have usually stopped, and the lagoons are at their maximum capacity and clarity.
• The "Disappearing" Act: From September onwards, the lagoons begin to evaporate, and by the end of the year, many have completely dried up.