Lençóis Maranhenses National Park
Brazil UNESCO World Heritage Site

Lençóis Maranhenses National Park is a national park and natural World Heritage Site in Brazil, established in 1981. It covers an area of 1,566 square kilometers and ranks as the second most looked-up sight in the country on English Wikipedia.
Planning a visit
The park experiences high rainfall between January and June, with the heaviest precipitation occurring from March to April. For drier weather, visit between August and November, when rainfall drops significantly to between 8 mm and 27 mm per month. Daily temperatures remain consistent throughout the year, with highs between 28 °C and 29 °C and lows between 25 °C and 26 °C.
The nearest airport is Marechal Cunha Machado International Airport in São Luís, located 123 kilometers away. The park is situated 1,569 kilometers from Brasília and spans the administrative areas of Barreirinhas, Primeira Cruz, and Santo Amaro do Maranhão.
Weather by month
Temperatures stay much the same all year, around 27 °C on average. The wettest is April, with about 348 mm of rain.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Average low, °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 |
| Rainfall, mm | 182 | 232 | 345 | 348 | 229 | 135 | 93 | 27 | 9 | 8 | 13 | 52 |
| Rainy days | 25 | 26 | 30 | 29 | 26 | 22 | 14 | 6 | 3 | 3 | 6 | 13 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.