During summer, the vast landmass of India, particularly the Thar Desert, heats up rapidly, creating a deep low-pressure area. Simultaneously, the surrounding Indian Ocean remains cooler with higher pressure. This pressure gradient draws moisture-laden winds from the southwest. Guide to Monsoon Season in India - ETG Blog
While the majority of the country receives its heaviest rainfall during the summer months, regional variations mean that "monsoon season" can look very different depending on where you are in the subcontinent. 1. The Southwest Monsoon (The Main Rainy Season) when is monsoon season in india
| Region | Monsoon Type | Primary Season Window | Characteristics | | :--- | :--- | :--- | :--- | | | Southwest | June – August | Extremely heavy rainfall; earliest onset. | | Tamil Nadu & Chennai | Northeast | Oct – Dec | The Southwest monsoon provides little rain here; the main season is winter. | | Northwest (Rajasthan) | Southwest | July – August | Very short season; some areas are arid and receive minimal rain. | | Northeast (Meghalaya) | Southwest | May – September | Earliest arrival; extremely high precipitation volumes. | During summer, the vast landmass of India, particularly
The exact timing of the monsoon varies annually based on several meteorological factors: Guide to Monsoon Season in India - ETG
It is inaccurate to say "Monsoon season is June-September" for the entire country without nuance.
The Southwest Monsoon is the principal rainy season for the majority of India, contributing approximately 75% to 80% of the country's annual rainfall. It is characterized by moisture-laden winds blowing from the southwest (Indian Ocean) toward the landmass.
The monsoon season in India is primarily divided into two phases: the (June to September) and the Northeast Monsoon (October to December) .