The monsoon season in India usually begins in June and lasts until September, with the peak months being July and August. The exact dates can vary slightly from year to year, but generally:
| Month | Avg Rainfall (mm) | % of Total Monsoon | Key Features | |-------|------------------|--------------------|---------------| | | ~165 | 19% | Onset phase; strong along west coast & Northeast; deficient in many parts initially. | | July | ~290 | 33% | Peak month for most regions; active monsoon trough; widespread rain. | | August | ~260 | 30% | Still vigorous; break monsoon periods possible (dry spells). | | September | ~165 | 18% | Retreat begins late month; often sees “September revival” in parts of peninsular India. | monsoon months india
The India Meteorological Department (IMD) designates the southwest monsoon season as . Key milestones: The monsoon season in India usually begins in