For generations, the arrival of the southwest monsoon has been India’s closest equivalent to a national heartbeat. Farmers sowed crops, reservoirs filled, electricity planners balanced supply and governments prepared budgets around a season that, while never perfectly predictable, followed a broadly familiar rhythm. That rhythm is now changing. The challenge facing India is no longer simply whether the rains will come, but whether they will come in ways the country’s economy and infrastructure can absorb.

The debate over climate change often revolves around annual rainfall totals. Yet averages can conceal more than they reveal. A district that receives its “normal” quota after weeks of drought followed by three days of torrential rain has not experienced a normal monsoon. Crops suffer moisture stress before fields are submerged, reservoirs struggle to capture sudden inflows efficiently, and cities face floods even as groundwater remains inadequately replenished. Distribution has become as important as volume. This shift carries profound economic consequences.

Agriculture still supports a significant share of India’s population, directly or indirectly, while food prices remain highly sensitive to weather shocks. Manufacturing, hydropower, drinking water supply and rural consumption........

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