‘Godzilla’ El Niño: Implications for India and the World

27 Oct 2026

Tags: Geography   Physical Geography   Climatology

Source: The Indian Express

What Is El Niño?

• Definition: El Niño is the abnormal warming of surface waters in the central and eastern equatorial Pacific Ocean, which alters atmospheric circulation and influences weather patterns worldwide.
• ENSO: El Niño is the warm phase of the El Niño–Southern Oscillation (ENSO), a coupled ocean–atmosphere phenomenon with three phases: El Niño (warm), La Niña (cool) and neutral.
• Measurement: Scientists monitor sea-surface temperature anomalies in the equatorial Pacific, particularly the Niño 3.4 region. The Relative Oceanic Niño Index (RONI) compares temperatures in the central equatorial Pacific with the broader tropical ocean; sustained positive anomalies help identify El Niño conditions.
• Global effects: El Niño can suppress the Indian southwest monsoon, increase temperatures and heatwaves, and alter the distribution of droughts, floods and cyclones.

Why Is the 2026 El Niño Significant?

• Rapid intensification: The phenomenon emerged in June 2026, with its effects on surrounding oceans becoming apparent after approximately 40–45 days. The July–September RONI reportedly recorded warming of 2–2.8°C.
• Exceptional warming forecast: According to the report, Pacific Ocean temperatures at the event’s epicentre could reach 3.8°C above normal, potentially exceeding previous records.
• WMO warning: On October 21, 2026, the World Meteorological Organization warned that the effects could continue into 2027, with widespread climate and humanitarian consequences.
• Historical comparison: The 2014–15 El Niño peaked at an anomaly of approximately 2.3°C, according to the report’s cited data.

Impact on India

• Southwest monsoon: The southwest monsoon contributes approximately 70% of India’s annual rainfall. El Niño generally weakens monsoon circulation and raises the risk of deficient rainfall.
• Rainfall deficit in 2026: India’s southwest monsoon weakened in late August and ended at 87% of the long-period average (LPA), making it the fourth driest since 2001, according to the article.
• Northeast monsoon: The northeast monsoon, important for Tamil Nadu and parts of southeastern India, was forecast to be normal over the southern peninsula.
• Temperature and winter: El Niño can contribute to above-normal temperatures, increasing the risk of heat stress and affecting seasonal water demand.
• Agriculture and food security: Weaker rainfall can reduce soil moisture, affect crop yields and increase irrigation requirements, potentially raising food prices.
• Economic implications: Weather-related crop losses and supply disruptions can increase demand for fertilisers and place pressure on agricultural livelihoods and water resources.

Regional and Global Impacts

• Northern Hemisphere: Above-normal temperatures are forecast over parts of southern Europe, Africa, the Arabian Peninsula, the Indian subcontinent and eastern Asia. Wetter-than-normal conditions may affect the Arabian Peninsula, central and eastern Asia, coastal Southeast Asia and North America.
• Southern Hemisphere: Higher temperatures are expected across parts of equatorial Africa, the Greater Horn of Africa, South America and Australia. Some regions, including southern Africa and parts of Central America and the Caribbean, may experience weaker rainfall.
• Extreme weather: Floods, droughts, extreme temperatures and cyclones could affect vulnerable populations, particularly in Central and South America, southern Africa and Southeast Asia.
• Humanitarian consequences: Crop failures, water shortages and extreme weather can threaten livelihoods, displace communities and increase food insecurity.

Significance for UPSC

• Climate and agriculture: El Niño is an important driver of interannual variability in the Indian monsoon and agricultural production.
• Disaster management: Advance forecasting and early-warning systems can support drought preparedness, flood management and climate-resilient agriculture.
• Food and water security: Governments may need to prepare for rainfall uncertainty, irrigation stress and price volatility.
• Global cooperation: Climate-related humanitarian risks highlight the importance of international disaster assistance, resilient food systems and adaptation finance.

Conclusion: The 2026 El Niño warning highlights the interconnectedness of ocean temperatures, monsoon variability, agriculture and global food security. For India, seasonal forecasting, efficient water management, climate-resilient farming and early-warning systems will be essential to limit its potential impacts.