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El Niño is emerging as an economic shock for Asia’s farm economies, threatening crops, farm incomes and food prices.
The article shows how erratic rainfall in India, Vietnam, Indonesia and the Philippines can trigger inflation and weaken rural demand.
It argues that reliable irrigation acts as economic insurance, stabilising incomes and consumption, and must be managed intelligently, not just expanded.
El Niño is no longer merely a climatological phenomenon to be discussed by meteorologists. For agricultural economies, it is increasingly an economic event—with consequences for farm incomes, food prices, household consumption and economic growth.
The emergence of El Niño conditions in 2026 is an important warning for Asia’s major agricultural economies. The World Bank has estimated a 61-87 per cent probability of El Niño emerging by mid-2026 and continuing into 2027, with the potential to threaten crop production across South Asia and parts of East Asia. India, Vietnam, Indonesia and the Philippines offer an instructive comparison. All four are major agricultural and rice-producing economies, but their exposure to climate shocks and their ability to absorb them differ.
A climate shock can trigger a chain reaction: rainfall disruption can lead to crop losses, which reduce farm incomes, put upward pressure on food prices and ultimately weaken households’ real consumption. Irrigation can help break this chain, but its effectiveness depends not only on irrigation coverage but also on how reliably water reaches farmers.
The conventional discussion of El Niño focuses on agricultural output. A deficient or badly distributed monsoon reduces yields, and lower supply pushes up food prices. But for a farming household, a failed crop also creates an immediate income shock.
The farmer may respond by reducing consumption, borrowing, selling livestock or assets, postponing investment or seeking non-farm employment. At the same time, the household may face higher prices for the food it needs to buy. The farmer can therefore lose income as a producer while paying more as a consumer.
The consequences are particularly serious for small and marginal farmers, tenant cultivators and agricultural labourers, whose savings and access to formal insurance and credit are limited. A climate shock consequently does not remain confined to agriculture; it propagates through the rural economy.
Evidence from the Philippines illustrates this transmission. A World Bank study found that droughts reduced food consumption by about 4 per cent among affected households while agricultural commodity prices increased. The effects extended beyond agricultural households to rural non-farm households, underlining the wider economic consequences of climate variability.
India enters the present El Niño episode with a much stronger agricultural and food-management system than it had several decades ago. Foodgrain stocks, procurement, public distribution systems, improved irrigation, better roads and a more diversified rural economy provide important buffers. Yet vulnerability remains.
Recent inflation data show why. India’s retail inflation, measured by the CPI, edged up from 4.38 per cent in June to 4.45 per cent in July 2026, remaining above the Reserve Bank of India’s 4 per cent target for the second consecutive month. Food inflation rose to 5.52 per cent, while rural CPI inflation stood at 4.84 per cent, compared with 3.96 per cent in urban areas.
The significance goes beyond the headline inflation number. Food-price pressures directly affect the real purchasing power of households, particularly in rural areas. At the same time, a weather-induced agricultural shock can reduce farm incomes and weaken rural demand.
The transmission therefore works in two directions: an erratic monsoon can increase food inflation while simultaneously reducing farm incomes and rural consumption. The result can be an uncomfortable combination of higher prices and weaker consumption. This is why the economic importance of irrigation extends well beyond the additional crop output it generates.
The traditional way of evaluating irrigation projects is to ask how much additional agricultural production and income they generate. That remains important, but it is increasingly insufficient.
Irrigation can also reduce the volatility of agricultural incomes. A farmer with reliable access to water is not completely insulated from drought, but the probability and magnitude of crop failure can be reduced. Reliable irrigation can help maintain cropping intensity, support crop diversification, protect livestock and sustain horticulture and other livelihood activities during periods of rainfall stress.
Evidence from NCAER’s recent assessment of major irrigation projects in India points in this direction. Command areas tend to record higher agricultural incomes and lower income volatility than comparable non-command areas, with benefits extending beyond crop production into livestock, horticulture and rural enterprises.
But irrigation coverage is not the same as effective irrigation access. The existence of an irrigation project does not automatically mean that every farmer receives a reliable supply of water. Reachability within the command area matters, particularly for farmers at the tail end. Where water delivery is uneven or unreliable, tail-end farmers can remain exposed to rainfall shocks even within an ostensibly irrigated command.
This has an important policy implication: if irrigation reduces income volatility, it can also help reduce volatility in rural consumption. Irrigation should therefore be viewed partly as economic insurance against climate variability.
Vietnam provides an important example of the changing meaning of water security. Its Mekong and Red River deltas are major agricultural regions, and irrigation has played a central role in sustaining rice production. The Food and Agriculture Organization reported that Vietnam’s 2026 winter-spring paddy crop, mostly irrigated and accounting for about 45 per cent of annual output, was progressing satisfactorily with adequate irrigation water in the major producing deltas.
Yet water security is becoming more complicated. Drought, salinity intrusion, groundwater depletion, land subsidence and changing river flows can interact with climate variability. Vietnam therefore illustrates a broader transition: irrigation policy must move from simply supplying more water to managing water more intelligently.
Indonesia faces a different challenge. El Niño-related drought can affect rice production, while its geographical diversity makes water management complex. In 2026, Indonesia has emphasised irrigation, pumping, early warning systems and food reserves. Its experience highlights the importance of combining production resilience with market resilience. Irrigation helps protect production, while food reserves, logistics and trade policy help stabilise markets.
The Philippines perhaps offers the clearest warning about the interaction between climate shocks, food inflation and household welfare. Its Department of Agriculture has promoted drought-tolerant varieties, solar-powered irrigation, changes in planting schedules and more efficient water allocation in response to the El Niño threat.
Its recent food inflation experience demonstrates the distributional consequences. Food inflation reached 5.8 per cent in May 2026, while rice inflation was 15.6 per cent. For poorer households, higher food prices can rapidly translate into lower real consumption because they have less capacity to substitute towards other goods.
These experiences show that climate resilience cannot be built on irrigation alone. It requires an ecosystem of water management, agricultural technology, market connectivity, credit, insurance, social protection and rural infrastructure.
The common lesson for India is that irrigation policy needs a broader framework. An irrigation project should be assessed not only by how many hectares it irrigates or how much additional crop output it generates, but also by how it affects income stability, livelihood diversification, employment, rural enterprises and resilience to rainfall shocks.
The objective cannot simply be to maximise the volume of water delivered to farms. It should be to maximise the economic value and resilience generated per unit of water.
This requires modernising existing irrigation systems, reducing conveyance losses, improving last-mile delivery, strengthening water-user institutions, promoting water-saving technologies where appropriate, using groundwater conjunctively and matching crop choices to water availability. For climate resilience, the relevant metric is therefore not merely the area brought under irrigation, but the reliability with which irrigation water actually reaches the farm—especially at the tail end of the command.
There is a broader macroeconomic lesson. Central banks can respond to inflation through monetary policy, while governments can respond to food inflation through trade, stocks, procurement and subsidies. But neither can manufacture rainfall.
The most effective response to climate-induced food inflation therefore begins much earlier—with investments that reduce the sensitivity of agricultural production and rural incomes to weather shocks. This changes the meaning of irrigation. Irrigation is not simply a productivity-enhancing agricultural investment. It is also a form of climate adaptation, income insurance and, indirectly, macroeconomic stabilisation. When rainfall is reliable, this benefit remains largely invisible. When El Niño arrives, its value becomes obvious.
The policy question for India should therefore not be whether El Niño will occur again. It will. The more important question is whether the next drought will find farmers, rural consumers and food markets better protected than the last one.
The answer will depend not only on how much water India stores, but on how intelligently it manages that water—and how effectively irrigation is connected to the broader rural economy. Because when the rains fail, the first shock may be agricultural. But the consequences are economic, social and macroeconomic.
Saurabh Bandyopadhyay is Senior Fellow at NCAER, New Delhi. Views expressed are personal
Views expressed are the author’s own and don’t necessarily reflect those of Down To Earth