The monsoon that accounts for most of the rainfall in India is the South West Monsoon.
The South West Monsoon typically arrives in India around June and lasts until September, bringing heavy and widespread rainfall across the country.
This monsoon is critical for agriculture, replenishing water resources and sustaining the livelihoods of millions dependent on farming.
The North East Monsoon also contributes to rainfall, particularly in parts of Tamil Nadu and Andhra Pradesh, but the bulk of India's rainfall is received from the South West Monsoon.
Conclusion:
The South West Monsoon is responsible for the majority of the rainfall in India.