The northern coast consists of the eastern region of Lambayeque, the Piura Region and the Tumbes Region. They are characterized by having different climate and geography from the rest of the coast. Right between the 3 hour drive on the Sechura desert, which is located north of the Lambayeque Region and south of the Piura Region, is the evidence of climate change from the common subtropical desert found on the south to visible tropicalization effects of the tropical dry climate or tropical savanna. Examples of this are the tropical dry forests that begin to appear. They are composed of shrubs, thorny trees, carrob trees, faique trees, huayacan trees, hualtaco trees, palo santo trees, ceibo trees and on the coast mangrove forests. It is also a biodiverse area where typical wildlife can be observed such as crocodiles, reptiles, iguanas, boas, pava aliblanca, anteater, bear, sloth (bearh) and many more.
This climatical reasons for change are the presence of the warm Niño Current during the summer months (December to April), the eventual El Niño Phenomenon and the passing of Amazon Jungles clouds due to mountain openings and lower altitudes of the Andes Chain. These are the causes for a climate change in a short two or three hour trajectory that is visible between the Lambayeque Region and the Sechura Province, where not only geography changes but a temperature rise of 6 °C (10.8 °F) or more depending on the month. It is directly off the shores of the Sechura Region where the cold Humboldt current and warm el Niño current meet, at about 5° to 6° south of the equator. From this point warm temperatures are most common, and there are no true winters. Average temperatures range between 24.5–27 °C (76.1–80.6 °F). Clear skies, beautiful warm valleys, eroded terrains with reddish colored sands, rice fields, palm trees, savannas, bushy forests, dense rivers, beautiful warm turquoise beaches, orangey or yellowish terrains, clearer sands and a sun that hits like the African plateau, where shade is almost impossible.
Summer (December through March) is more humid and very hot, with average temperatures that vary from 25 °C (77 °F) during the night to around 34 °C (93.2 °F) during the day, although north of Lambayeque it can reach the 40 °C (104 °F). Winters (June–September) are cooler during the nights; around 16 °C (60.8 °F) during the night, to around 27 °C (80.6 °F) during the daytime.
There are protected areas in Tumbes and Piura filled with tropical canelo forests and tropical dry forests such as Caza de Coto and Cerros de Amotape, both extending into southern Ecuador. The areas of Eastern Lambayeque also have tropical dry forests which are found in the Chaparri and Chongoyape provinces. These forests have the particularity of connecting to the Amazon basin through the Marañon passage (an area where there are also tropical dry forests). Mangrove forests are located in four specific areas from Sechura to Tumbes.
In these regions there are mangroove forests at the ending strips of the Piura River in the Sechura Province Vice (the southernmost mangroves in the Pacific Ocean). To the north the ending strips of the Chira River, Tumbes River, and Zarumilla River also have mangrove forests that flow into the ocean.
Terrain: western coastal plain (costa), high and rugged Andes in center (sierra), eastern lowland jungle of Amazon Basin (selva).
Natural resources: copper, silver, gold, petroleum, timber, fish, iron ore, coal, phosphate, potash, hydropower.