Weather & Biodiversity

great monkey shot


Generally there are two seasons in Peru: the Dry Season (May to October) and the Rainy Season (November to April).  The Dry Season tends to be the cooler and less rainy.  During the Rainy Season there is a chance for heavier rains and warmer temperatures. About eighty percent of rainfall occurs during these months. Rain can last for hours or even days. Average highs and lows range from 62º F at night up to around 93º F during the day. The lowland sections of the Peruvian Amazon can receive approximately two meters of rain annually and have temperatures ranging between 79º F at night to 90ºF during the day. Year round, occasional cold fronts can bring temperatures down to a low of 45º F, so come prepared for anything.

Traveling during the Seasons: What is Better?

There are arguments to be made for both seasons. During the dry season, there is less rain and less bugs but during the Rainy season, it is possible to take river tours and see more wildlife. During the Rainy season, it can be significantly muddier and sometimes roads can be washed out, as well.

Amazonian Bio-Diversity

The Peruvian Amazon only of the most biodiverse places on Earth, possessing 3000 known species of reptiles, mammals and amphibians. 16% of these animals are known only in Peru.  8% of those are endangered.  As a nation, Peru also has the largest number of bird species in the world and the third-largest number of mammals, 44% of bird species and 63% of mammal species inhabit the Peruvian Amazon. You find here an extraordinary range of fascinating creatures including hundreds of species of mammals: monkeys, anteaters, bats, rodents, tapirs, sloths, caimans, armadillos, deer, wild pigs, and wild cats. Also, you will find thousands of species of birds and amphibians with frogs being far the most populous and an an enormous variety of reptiles such as caymans, turtles and snakes. The green anaconda “sacha mama” of the rainforest is considered the largest and heaviest snake in the world. You will also encounter some amazing insects: tarantulas, leaf bugs, giant ants, neon butterflies, to name a few.

In the plant world, you will find trees greater and taller than any other place in the world. Amongst the vast array of flowers, shrubs, trees and vines, there are thousands of medicinal plants that possess remarkable healing qualities. Pharmaceutical companies are just beginning to recognize the powerful healing potential of what indigenous people have known for thousands of years and there are new species of plants being discovered all the time. Amongst indigenous peoples, the rainforest has been their pharmacy and most indigenous groups have developed a sophisticated knowledge of the cultivation and preparation of Amazonian plant medicines.

chiric sanango santuario hustin
The potent chiric sanango

Tragically, the ongoing degradation caused by urban development, illegal logging, unregulated mining, and high-input agriculture is destroying many species of trees and animals, threatening the delicate balance of the rainforest. The race is on to preserve a vanishing knowledge before it is too late.


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