Monsoon
The monsoon is a seasonal reversal of winds that brings heavy rainfall, most notably to South Asia.
A monsoon is a seasonal change in the direction of the prevailing winds of a region, usually bringing a marked wet season. The term is most associated with the Indian subcontinent.
How it works
During summer, land heats faster than the sea, drawing moist air inland and producing heavy rain. In winter the pattern reverses, bringing drier air. This is driven by the differing heat capacities of land and ocean.
Importance for India
The south-west monsoon, arriving around June, supplies most of India's annual rainfall and is vital for agriculture, water supply and the economy. A weak monsoon can cause drought.
Frequently asked questions
What is the monsoon?
A seasonal wind reversal that brings a wet season, especially to South Asia.
Why is the monsoon important to India?
It provides most of the rainfall needed for farming and water supply.