Disrupted monsoons bring deadly floods and dry spells across India, exposing the high cost of infrastructure built for yesterday’s climate as scientists warn of a structural shift.

For generations, India’s life, economy and agriculture have moved to the steady beat of the southwest monsoon. The rains normally arrive around June, deliver the bulk of the country’s annual rainfall, and begin to withdraw by September. That broad pattern was once predictable enough for farmers to plan sowing, for cities to design drainage, and for businesses to schedule operations. But now, according to a report by Deutsche Welle, that familiar rhythm increasingly looks like a relic of the past.

Since late July 2026, more than 100 people have been killed across India by floods, landslides and lightning triggered by heavy monsoon rains. The northeastern state of Assam has suffered the most, with over 120,000 people affected. Kerala, Jammu and Kashmir, Bihar and Jharkhand have also recorded deaths and widespread disruption. Even the capital, New Delhi, has seen flooding. The problem is not simply that India is receiving more rain overall. It is the way the rain now arrives: prolonged dry spells interrupted by short, intense downpours that overwhelm rivers, drainage systems and hillsides.

Scientists See Intensity, Not Just Variability

Akshay Deoras, a senior research scientist at the UK’s National Centre for Atmospheric Science and the University of Reading, is careful not to claim the Indian monsoon has entered an entirely new regime. “Active and break spells have always been part of the monsoon. What appears to be changing is their intensity,” he told Deutsche Welle. A warmer atmosphere holds more moisture, so the active spells of heavy rain are becoming more extreme.

Madhavan Nair Rajeevan, a climate scientist and former secretary in India’s Ministry of Earth Sciences, goes further. Average seasonal rainfall has not shown a clear long-term decline or increase, and the monsoon remains a robust natural system. Yet the timing, intensity and spatial distribution of rain have changed markedly. “The characteristics of the Indian monsoon have changed fundamentally,” Rajeevan said. “We are witnessing an increase in short-duration rainfall extremes, longer dry spells, and changes in the frequency, intensity and distribution of monsoon weather systems.” He describes the rise in extreme rainfall as a structural shift rather than mere natural variability. El Niño has added extra unpredictability this year, but scientists point to longer-term climate change as the deeper driver.

Farms and Cities Equally Exposed

India’s farmers remain highly dependent on the monsoon’s timing. Extended dry periods disrupt sowing and deplete soil moisture; sudden intense rain then washes away topsoil and damages standing crops. Cities face parallel pressures. Rapid construction of roads, housing and commercial buildings reduces the land available to absorb water and disrupts natural drainage channels. After weeks of dry weather, hard-baked soil absorbs little when the heavy rain finally arrives. The water runs off into rivers and drains instead of recharging groundwater, turning what should be a resource into a hazard.

Deoras notes that the greatest risks now come from these short bursts of very intense rainfall. India’s infrastructure, he argues, is increasingly mismatched to the new threat. Drainage systems and flood-management plans are still often designed around historical seasonal averages rather than the high-impact, short-duration events that cause the most damage. Forecasting has improved, but warnings only help if authorities convert them into timely, impact-based decisions – closing schools, restricting travel or sealing off vulnerable zones before the rain hits.

Planning that Ignores the Climate Signal

Environmental lawyer Ritwick Dutta, managing trustee of the Legal Initiative for Forest and Environment, says the crisis goes beyond the weather itself. “It is now scientifically accepted that climate change leads to erratic rainfall patterns – high rainfall over a few days followed by long dry periods during the monsoon,” Deutsche Welle quoted him as saying. These trends are compounded by a decision-making process that fails to factor climate change into construction projects. Dutta cites Pune, where a state government and The Energy and Resources Institute study projects a 37 per cent increase in rainfall by 2030.

Yet that projection has not been adequately built into the city’s riverfront development and other planning. “Dams, embankments and roads are all likely to suffer major damage due to climate change, and yet we proceed as though climate change is a matter to be discussed only in conferences and workshops,” he said. “We are, in effect, ‘weaponizing the environment’.” India’s environmental clearance system still does not require systematic climate-proofing of projects.

A Year of Near-Constant Extremes

Data from the Centre for Science and Environment (CSE) underline the scale of the challenge. Extreme weather affected India on 331 of 334 monitored days in 2025 – 99 per cent of the period assessed. More than 4,000 people died, roughly 3,000 of them during the monsoon. At least 30 states and union territories experienced extreme weather simultaneously for eight consecutive months. 

Sunita Narain, CSE director general, argues that adaptation must now become central to India’s development strategy. “Climate change is no longer a future threat. It is already here in the form of extreme heat, extreme rainfall and increasingly destructive weather events,” she told Deutsche Welle. 

“The challenge is no longer proving the science, but redesigning our economy and infrastructure to survive it. Cities, roads, drainage systems and water infrastructure can no longer be designed for yesterday’s climate.” Every investment, she insists, must be planned for a future of more intense and unpredictable weather. India must stop treating each flood as an isolated disaster and start planning for a climate in which such extremes are no longer exceptional.

From Diagnosis to Adaptation

According to the Deutsche Welle report, India now faces a new pattern: national rainfall can be below normal while individual regions are underwater; farmers can wait weeks for useful rain and then lose crops in a few hours; cities can prepare for an average monsoon and still be overwhelmed by one extraordinary downpour. 

Rajeevan stresses that the focus must shift from documenting the changes to implementing sector-specific adaptation. That means better urban flood management, revised agricultural practices, stronger water-storage systems, and infrastructure designed around short-duration extreme rainfall rather than historical averages.