A unique feature of the rainforest surrounding Iquitos is its lack of a specific rainy or dry season. There is a high water period from December through May which is caused by the melting of snow as the Andean summer begins and from the rainy season in the upper jungle. The low water period begins in June and ends with the rising waters in November.
While the water level can fluctuate more then 45 feet, the warm and humid climate remains relatively constant throughout the year, giving this area its botanical category of "Everwet Tropical Forest". Normal daytime highs are 88° F and nighttime lows are 72°F.