Which regions in India are most affected by the monsoon?

The regions in India most affected by the monsoon are primarily the western coast, including Kerala and coastal Karnataka, as well as the northeastern states like Assam and Meghalaya, which receive heavy rainfall. The Western Ghats also experience significant downpours due to orographic lift. The monsoon typically brings substantial rainfall from June to September, impacting agriculture and water resources in these areas. Conversely, regions like the northwest, including Rajasthan, receive much less rainfall and are often drier.