Nestled in the eastern Himalayas and sandwiched between China and India, Bhutan is a small country in terms of geographical size and population. A landlocked mountainous country except for a strip of plains in the south, Bhutan has a total area of 38,394 km2 and 720,680 people (2012) and lies between 88°45’ and 92°10’ longitude east and 26°42’ and 28°15’ latitude north. The basic characteristic of the country is that distinct differences in nature and landscape come together within a small area. The serene valleys are separated by mountains.
Bhutan has three distinct ecological zones: sub-tropical in the south, temperate in the middle and sub-alpine in the north, which corresponds with three different climatic zones. The variations in climate are therefore equally extreme. Bhutan has a season for everyone. However, spring and autumn seasons are most favourable for cultural tours and trek expeditions. Winter months are cold at night but days are warm with bright and clear blue skies. In summer, Bhutan receives heavy monsoon rainfall.