Iran coping with torrential rains

A monsoon is a seasonal change in the direction of the prevailing, or strongest, winds of a region. Monsoons cause wet and dry seasons throughout much of the tropics. Monsoons are most often associated with the Indian Ocean. They always blow from cold to warm regions.

Monsoons are caused by temperature differences in the air over land and sea. In a monsoon region in summer the land and the air above it become very hot.

Iran's climate is usually dry in the summer season, but if the conditions are favorable, moisture enters Iran from the southeast (the Indian Ocean).

Since the humidity is very high, when it enters Iran, it encounters the high heat of summer and brings heavy rains (or monsoon rains).