The Summer Monsoon in India refers to the seasonal wind system that brings heavy rainfall to the Indian subcontinent between June and September. It is caused due to the differential heating of land and sea, where: The Indian landmass heats up faster than the surrounding oceans during summer. This creates a low-pressure area over northern and central India. Moist air from the Indian Ocean is drawn towards the land, leading to heavy rainfall, especially in the Western Ghats, North-Eastern states, and parts of the Indo-Gangetic plain. This monsoon is crucial for agriculture, as more than 70% of India's annual rainfall occurs during this period.