The forest

What is a rainforest?

A rainforest, in Britannica wording, is a luxuriant forest, generally composed of tall, broad-leaved trees and usually found in wet tropical uplands and lowlands around the Equator. Britannica Rainforests usually occur in regions where there is a high annual rainfall of generally more than 1,800 mm (70 inches) and a hot and steamy climate. The trees found in these regions are evergreen. Britannica

The rainforest biome remains warm all year and must stay frost-free. The average daily temperatures range from 20°C (68°F) to 25°C (77°F). NASA The tropical rainforest is a hot, moist biome where it rains all year long. NASA

There are two types of rainforests, tropical and temperate. Tropical rainforests are found closer to the equator where it is warm. Temperate rainforests are found near the cooler coastal areas further north or south of the equator. NASA Temperate rainforests filled with evergreen and laurel trees are lower and less dense than other kinds of rainforests because the climate is more equable, with a moderate temperature range and well-distributed annual rainfall. Britannica

Tropical rainforests, which worldwide make up one of Earth’s largest biomes (major life zones), are dominated by broad-leaved trees that form a dense upper canopy and contain a diverse array of vegetation and other life. Britannica Tropical rainforests represent the oldest major vegetation type still present on the terrestrial Earth. Britannica

Rainforests may also be found in areas of the tropics in which a dry season occurs, such as the "dry rainforests" of northeastern Australia. In these regions annual rainfall is between 800 and 1,800 mm and as many as 75 percent of the trees are deciduous. Britannica Contrary to common thinking, not all tropical rainforests occur in places with high, constant rainfall; for example, in the so-called "dry rainforests" of northeastern Australia, the climate is punctuated by a dry season, which reduces the annual precipitation. Britannica

The climate that produces a tropical rainforest, and the climates that do not, are on the climate page.