EnvironmentSunday, 1 November 2026·The Hindu - Environment
El Niño and Tamil Nadu: why the State’s rainfall response can differ from the rest of India
A 2026 environment report explains that El Niño usually weakens rainfall in India, but Tamil Nadu has shown a different pattern.
Key highlights
Direct fact
In October 2026, The Hindu reported that Tamil Nadu may experience El Niño differently from the rest of India, even though El Niño years usually bring deficient rainfall and droughts across India.
Key specifics
- El Niño Southern Oscillation is a climate phenomenon in the Pacific Ocean that occurs every 2 to 7 years.
- El Niño refers to warmer-than-average surface waters off the western coast of Peru and Ecuador.
- Typical warming is about 0.5°C, but the 2026 report said the rise had reached 2°C, calling it a “super” El Niño.
- The report linked El Niño to global effects, not only to India’s monsoon and drought patterns.
- The article specifically focused on Tamil Nadu, India, Peru and Ecuador in the context of Pacific Ocean climate change.
Exam lens
Question type: environment and climate match-the-following, El Niño = Pacific Ocean warming, 2 to 7 year cycle, 0.5°C normal rise versus 2°C super El Niño; TNPSC may ask why Tamil Nadu’s rainfall response can differ from all-India trends.