Monsoon 2026: NSE flags El Niño risk and market cues

NSE report puts monsoon at the centre of 2026 risks

India’s macroeconomic outlook for 2026 will largely hinge on the southwest monsoon, according to the National Stock Exchange (NSE) in its latest report. The exchange identified monsoon performance as the biggest macro risk for the year ahead, even as it noted that India’s equity investor base is expanding beyond traditional markets. NSE also said the investor mix is becoming younger and more diverse, a structural trend that can shape market participation through the cycle. But near-term macro variables such as food inflation and rural demand still have a direct line to rainfall outcomes. The latest meteorological signals have sharpened that risk assessment.

IMD’s 90% LPA forecast sets a weak baseline

The India Meteorological Department (IMD) has revised its South-West monsoon forecast to 90 percent of the long-period average (LPA), a level described as among the lowest projected on record. The report noted this could mark India’s first below-normal monsoon in three years and the weakest forecast since 2015, if realised. IMD’s probability distribution adds to the caution, with a 60 percent probability of deficient rainfall and a further 24 percent probability of below-normal rainfall. In practical terms, that means the central case has shifted away from a clean, broad-based recovery in rural activity. It also raises the odds of sharper state-level divergences depending on irrigation coverage and crop patterns.

El Niño emerges as the key challenge for 2026

NSE explicitly flagged El Niño as the main challenge, saying downside risk is visible across different regions. The broader reporting also points to a fast-forming El Niño backdrop, with the American agency NOAA citing an 82 percent probability that El Niño is developing. Japan’s Meteorological Agency put the probability at 90 percent, and another update cited a 92 percent probability of El Niño dominating the crucial June to September season. Several climate model forecasts also suggest a high probability of a very severe El Niño during the October to December 2026 period. Meteorologists, however, also note that while severe droughts are often pinned on El Niño, not every El Niño results in weak rainfall.

A weak start to the monsoon raises early season concerns

India’s southwest monsoon has begun on a weak note, adding immediate focus on agricultural output and inflation dynamics. Rainfall is expected to remain below normal across large parts of India’s monsoon core zone, which includes many rainfed agricultural regions. Weather models cited in the report suggest dryness may persist through July and August, particularly across northwest and central India. Analysts said aggregate macro risks may remain manageable, but impacts could vary sharply across states based on reservoir levels, irrigation coverage, and dependence on agriculture. This matters because rainfall shocks tend to transmit through food prices and rural consumption faster than many other macro factors.

Commodity volatility and weather create a two-front challenge

The outlook is not only domestic. The report framed the risk as a two-front economic challenge, combining global commodity volatility linked to tensions in West Asia with rising weather risks at home. Commodity swings can add to input cost pressures, while a weak monsoon can simultaneously push up food prices. That combination increases the complexity of policy trade-offs when inflation and growth risks rise together. It also raises uncertainty for sectors tied to rural demand and agricultural supply chains.

Channels of impact: food output, rural demand, and inflation

A key concern highlighted was that rainfall below the 90 percent LPA threshold could affect food output and weaken rural demand. One analyst cited in the report said El Niño would act as a clear drag mainly through food production, rural demand and inflation. If the monsoon is below normal, kharif crops such as rice, cotton and soybeans might see low yield, which can constrict supplies and trigger a surge in food prices. The report also noted that roughly 50 percent of India’s population relies on agriculture for livelihood, which makes rural incomes sensitive to rainfall outcomes. Another risk channel flagged was electricity and water stress, reflecting how weather shocks can spill into broader parts of the economy.

What historical relationships imply for farm output

The HDFC research cited in the provided material linked monsoon shortfalls to agricultural performance using a historical relationship. It said each percentage point of monsoon shortfall below the LPA is associated with approximately 0.4 percentage points of lower crop GVA growth. The same material noted that India relies on the four-month monsoon window for more than 70 percent of its total annual precipitation. These relationships do not guarantee outcomes in a specific year, but they frame why a 90 percent LPA forecast is treated as a macro variable rather than a narrow farming issue. They also explain why policy attention tends to rise quickly once rainfall deficits persist beyond the early weeks.

Offsets and uncertainty: the IOD factor

Not all signals point in one direction. The Japanese Meteorological Agency said potential development of the Indian Ocean Dipole (IOD) in July could offset the El Niño impact on India’s monsoon. This is important because it keeps scenario dispersion wide even after weak early rainfall. It also reinforces the need to track intra-seasonal distribution, not only the seasonal total. In practice, outcomes often depend on where deficits concentrate and whether late-season rains can stabilise reservoirs and key crops.

Key numbers to track for 2026

Market impact: why investors are watching monsoon prints

For listed markets, the monsoon affects multiple moving parts, starting with food inflation and household purchasing power. The material also pointed out that a few weeks of low rainfall can lift food inflation, reduce tractor sales, and impact FMCG revenues through weaker rural income and spending. A weak monsoon can also complicate monetary policy choices if food inflation rises while growth slows, as noted in the discussion of broader macro stress. That combination can influence sentiment across consumer, agri-input, two-wheeler, and rural-facing financial stocks even without company-specific news. Meanwhile, NSE’s comment on a younger and more diverse investor base suggests retail participation may remain an important driver of volumes, but macro headlines could still shape risk appetite.

Why the story matters in FY27 planning

The report argued that India is less dependent on the monsoon than it once was, yet remains highly exposed to weather shocks. If El Niño strengthens and rainfall weakens further, impacts may extend beyond agriculture into inflation, consumption, and policy choices that shape the FY27 growth outlook. The HDFC note added that government foodgrain stockpiles remain robust, which can give policymakers room to respond through open market actions if price pressures emerge. The same material framed the 2026 El Niño as a major macro risk to monitor with high vigilance, rather than an existential crisis.

Conclusion

NSE’s latest assessment puts the 2026 monsoon at the heart of India’s near-term macro debate, with IMD projecting rainfall at 90 percent of LPA and assigning high odds to deficient or below-normal outcomes. With El Niño probabilities cited as elevated and early monsoon conditions described as weak, investors and policymakers are likely to track rainfall distribution, crop outcomes, and food inflation prints closely through July and August. Attention will also stay on whether the IOD develops in July and offsets some of the dryness risk. The next set of meteorological updates and intra-seasonal rainfall trends will be key inputs for how markets price rural demand and inflation risks into FY27 expectations.