Taken as a whole, the Duars provides the greatest amount of fertile flatlands in Bhutan. Rice and other crops are grown on the plains and mountainsides up to 1,200 meters. Rhinoceros, tigers, leopards, elephants, and other wildlife inhabit the region. Western Bhutan is particularly affected by monsoons that bring between 60 and 90 percent of the region's rainfall. The climate is humid and subtropical in the southern plains and foothills, temperate in the inner Himalayan valleys of the southern and central regions, and cold in the north, with year-round snow on the main Himalayan summits.
Temperatures vary according to elevation.
Most of the central portion of the country experiences a cool, temperate climate yearround . Annual precipitation ranges widely in various parts of the country. In the temperate central regions, a yearly average of around 1,000 millimeters is more common, and 7,800 millimeters per year has been registered at some locations in the humid, subtropical south, ensuring the thick tropical forest, or savanna.