The Sechura Desert is located south of the Piura Region

Piura Region

Piura is a coastal region in northwestern Peru. The region's capital is Piura and its largest port cities, Paita and Talara, are also among the most important in Peru...

 of Peru

Peru

Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

 along the Pacific Ocean

Pacific Ocean

The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

 coast and inland to the foothills of the Andes Mountains. It is north of the Atacama Desert

Atacama Desert

The Atacama Desert is a plateau in South America, covering a strip of land on the Pacific coast, west of the Andes mountains. It is, according to NASA, National Geographic and many other publications, the driest desert in the world...

.
Within Peru, the desert is described as the strip along the northern Pacific

Pacific Ocean

The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

 coast of Peru in the southern Piura

Piura Region

Piura is a coastal region in northwestern Peru. The region's capital is Piura and its largest port cities, Paita and Talara, are also among the most important in Peru...

 and western Lambayeque regions

Lambayeque Region

Lambayeque is a region in northwestern Peru known for its rich Moche and Chimú historical past. The region's name originates from the ancient pre-Inca civilization of the Lambayeque.-Etymology:...

, and extending from the coast 20–100 km inland to the secondary ridges of the Andes Mountains. At its northern end near the city of Piura

Piura

Piura is a city in northwestern Peru. It is the capital of the Piura Region and the Piura Province. The population is 377,496.It was here that Spanish Conqueror Francisco Pizarro founded the third Spanish city in South America and first in Peru, San Miguel de Piura, in July 1532...

, the Sechura Desert transitions to the Tumbes-Piura tropical-dry forests ecoregion.