Duration Of Rainy Season In India =link= · Safe

| Region | Rainy Season Length | Typical Months | Why? | | :--- | :--- | :--- | :--- | | | 4 months | June – September | Onset of Arabian Sea branch; stops abruptly after retreat. | | Northwest (Delhi, Jaipur) | 2–3 months | July – September | Weak monsoon; rain only during active western disturbances. | | Northeast (Meghalaya) | 7–8 months | April – October | Pre-monsoon "Mango showers" + strong SW Monsoon + retreating NE Monsoon. | | Tamil Nadu (Chennai) | 2 distinct seasons | Oct – Dec (NE Monsoon) + June–Sep (weak SW) | Lies in rain shadow of Western Ghats during summer; gets 60% rain from winter cyclones. | | Himalayan Foothills | 5 months | June – October | Orographic lift; delayed retreat due to mountains. |

Title: Monsoons & Maps: Why the Rainy Season in India Lasts 4 Months in the West but 8 Months in the East duration of rainy season in india

6/10 The outlier. Almost dry June-Aug. Real rain comes Oct-Dec (NE monsoon). Nov is wettest month. | Region | Rainy Season Length | Typical Months | Why