How El Nino could affect India's monsoon and your household budget - explained

An El Niño event is developing in the equatorial Pacific Ocean, with the Niño 3.4 index having crossed the El Niño threshold by June 2026. IMD (India Meteoro...

What Happened

An El Niño event is developing in the equatorial Pacific Ocean, with the Niño 3.4 index having crossed the El Niño threshold by June 2026.
IMD (India Meteorological Department) has forecast below-normal rainfall for the 2026 Southwest Monsoon season — approximately 90% of the Long Period Average (LPA) — with a 60% probability of a deficient season overall.
The 2026 Southwest Monsoon reached Kerala on 4 June, three days later than normal and nine days after IMD's forecast date.
Climate models project the El Niño index could rise from 1.97°C in July to as high as 3.14°C by December 2026, suggesting this could become a Super El Niño — the strongest classification.
NOAA (US National Oceanic and Atmospheric Administration) has flagged a 92% probability of El Niño conditions persisting through the monsoon season.
A rainfall deficit directly threatens kharif crop output — particularly rice, pulses, oilseeds, and sugarcane — raising the prospect of food price inflation later in 2026.

Static Topic Bridges

El Niño and the ENSO Mechanism

El Niño–Southern Oscillation (ENSO) is a periodic climate pattern involving the warming and cooling of surface waters in the central and eastern tropical Pacific Ocean. In a normal (neutral) year, trade winds blow westward across the Pacific, piling up warm water near Australia and Indonesia; upwelling of cold water occurs off South America's coast.

During El Niño, trade winds weaken or reverse: warm water spreads eastward across the Pacific, suppressing the convective rainfall systems that normally feed the Indian Ocean and the South Asian monsoon. The Southern Oscillation is the atmospheric component — measured by the difference in sea-level pressure between Tahiti (Pacific) and Darwin (Australia).

El Niño threshold: when the Niño 3.4 index (SST anomaly in 5°N–5°S, 120°W–170°W region) is ≥ +0.5°C for five consecutive overlapping three-month periods.
La Niña is the opposite — cooler-than-normal Pacific SSTs — and is generally associated with above-normal monsoon rainfall over India.
Super El Niño: generally defined as Niño 3.4 anomaly exceeding +2.0°C; associated with severe global climate disruptions.
ENSO cycle: irregular, occurring every 2–7 years; each event lasts 9–12 months on average.

Connection to this news: The 2026 El Niño is on a trajectory toward Super El Niño status, which historically produces the most significant rainfall deficits over India during the June–September monsoon season.

El Niño and the Indian Summer Monsoon — Historical Linkage

The Southwest Monsoon (June–September) delivers approximately 70% of India's annual rainfall and is critical to kharif agriculture, groundwater recharge, and river flows. The statistical inverse relationship between El Niño and Indian monsoon rainfall has been documented for over a century: 9 of the 10 worst drought years in India in the 20th century coincided with El Niño events.

The El Niño–monsoon relationship works through anomalous warming of the Pacific, which shifts the Walker Circulation eastward, reducing moisture convergence over the Indian subcontinent.
Indian Ocean Dipole (IOD): A positive IOD (warmer western Indian Ocean) can partially counteract El Niño's monsoon-suppressing effect. In 2026, IMD has forecast a neutral IOD, meaning no mitigating counterforce is expected.
Long Period Average (LPA): Average monsoon rainfall over the 1971–2020 period = approximately 87 cm over the entire country. Below-normal is defined as < 96% of LPA; deficient is < 90%.
The relationship is not deterministic — some El Niño years (e.g., 1997–98) coincided with near-normal Indian monsoons because of other compensating factors.

Connection to this news: With neutral IOD and a developing strong El Niño, India's monsoon in 2026 faces a doubly unfavourable configuration, explaining IMD's below-normal forecast.

Agricultural and Food Inflation Linkage

India's food economy is heavily rain-fed. Approximately 51% of net sown area lacks irrigation and depends on monsoon rainfall. Kharif crops — sown in June–July and harvested in October–November — include rice, jowar, bajra, maize, tur (arhar), urad, moong, groundnut, soybean, and sugarcane. A deficient monsoon reduces kharif output, tightens supply of cereals and pulses, and pushes up the Consumer Price Index (CPI) food component.

CPI Food and Beverages has a weight of approximately 45.86% in India's overall CPI basket — the largest single component.
Pulses and oilseeds are particularly price-sensitive to monsoon shortfalls because India's domestic production is low relative to demand (India is a net importer of edible oils).
A deficient monsoon also reduces reservoir levels, impacting rabi (winter) crop irrigation.
Government policy responses typically include: increased imports (waiving customs duties on edible oils, pulses), open market sales from Food Corporation of India (FCI) buffer stock, and restrictions on exports of sensitive commodities.

Connection to this news: A below-normal 2026 monsoon driven by El Niño is likely to translate into higher food prices through the October–March period — directly affecting household budgets and complicating the RBI's inflation management task.

IMD's Monsoon Forecasting Framework

The India Meteorological Department issues two operational monsoon forecasts: a long-range forecast in April (updated in May/June), and regional/seasonal updates through the season. IMD uses a statistical ensemble model (previously the 16-parameter power regression model, later updated to a newer ensemble approach) as well as global climate model inputs.

IMD classifies monsoon seasons as: Excess (>110% LPA), Above Normal (105–110%), Normal (96–104%), Below Normal (90–95%), Deficient (<90%).
For 2026, IMD forecast: ~90% of LPA with 60% probability of deficient season.
IMD also tracks spatial distribution — some regions (Northeast India, parts of Western Ghats) typically receive excess rain even in El Niño years, while peninsular India and the Indo-Gangetic plains face the most pronounced deficits.

Connection to this news: IMD's forecast makes the El Niño threat to Indian food security operationally concrete — enabling advance preparation by states and central agencies.

Key Facts & Data

2026 El Niño: Niño 3.4 index crossed threshold by June 2026; projected to peak at 3.14°C by December 2026.
NOAA: 92% probability of El Niño conditions persisting through the 2026 monsoon season.
IMD 2026 monsoon forecast: ~90% of Long Period Average (LPA); 60% probability of deficient season.
Southwest Monsoon 2026 onset in Kerala: 4 June 2026 (three days late).
LPA (1971–2020 baseline): approximately 87 cm national average rainfall over June–September.
Indian Ocean Dipole (IOD): Neutral in 2026 — no counterbalancing positive IOD effect.
CPI Food and Beverages weight: ~45.86% of the overall CPI basket.
Kharif crops at risk: rice, pulses (tur, urad, moong), oilseeds (soybean, groundnut), sugarcane.
Historical pattern: 9 of India's 10 worst droughts in the 20th century coincided with El Niño events.
Super El Niño threshold: Niño 3.4 anomaly > +2.0°C.