What Exactly Is Monsoon Withdrawal?
Monsoon withdrawal isn't like flipping a switch; it's a gradual process that marks the end of the four-month rainy season. The India Meteorological Department (IMD) has specific criteria to declare the retreat. It begins when rainfall ceases over northwest
India for five consecutive days. This is accompanied by the formation of an anticyclone—a high-pressure system—in the lower atmosphere, which brings drier, more stable air. A significant drop in moisture levels, visible in satellite imagery, confirms that the moist, rain-bearing southwesterly winds are being replaced by drier northwesterlies. This entire process typically starts in the extreme northwestern parts of the country, like Rajasthan, and progressively moves southeast over several weeks. The withdrawal from the entire country is usually completed by mid-October.
When Will the 2026 Monsoon Retreat?
For 2026, the formal withdrawal process is expected to begin after September 15, starting from parts of northwest India. While satellite images on September 8 already show strikingly clear skies over large parts of northwest and central India, forecasters clarify this is a sign of weakening monsoon activity, not the official start of the withdrawal. The development of a 'monsoon withdrawal anticyclone' is predicted to mature around September 21, which would create the conditions for a more organised retreat. This timeline is influenced by the prevailing El Niño conditions, which have contributed to a weaker monsoon season and are now facilitating its earlier-than-usual wind-down.
What Weather Changes Can We Expect?
The withdrawal's impact will vary across the country. In the northwest, residents can anticipate clearer skies, lower humidity, and increasingly dry weather as the retreat begins. However, the end of the monsoon is not always a quiet affair. The retreating phase can be erratic. While some areas turn dry, others, particularly in North and Central India, may still experience active rain spells. The IMD has forecast heavy rainfall for several states, including Himachal Pradesh, Uttarakhand, and Madhya Pradesh, through September 13. Meanwhile, Peninsular India is expected to see subdued rainfall for the first half of the month. Overall, the IMD has projected below-normal rainfall for September across the country, coupled with above-normal temperatures, signaling a warm and relatively dry end to the season for many.
The Ripple Effect on Agriculture and Daily Life
The timing and nature of the monsoon's withdrawal have significant consequences. For farmers, September rainfall is crucial for determining the soil moisture needed to plant winter crops like wheat, rapeseed, and chickpeas. A drier-than-normal September, as forecast for 2026, could hamper germination and growth, potentially impacting crop yields. The weaker monsoon has already put a strain on water-intensive crops such as sugarcane and rice. This could lead to lower production and force India to increase imports of sugar and vegetable oils. For the general public, the shift means preparing for hotter, drier days and a change in daily routines. The increased demand for cooling due to higher temperatures puts pressure on the energy grid, while drier conditions may affect water availability in reservoirs that were counting on a final surge of rain.
