Home · Learn · El Niño · El Niño basics and science
El Niño explained in one picture
In short. El Niño is a natural pattern in the tropical Pacific Ocean that usually returns every two to seven years.
El Niño is a natural pattern in the tropical Pacific Ocean that usually returns every two to seven years. Right now one is under way: NOAA's status on 8 October 2026 is "El Niño Advisory".
A normal year. Trade winds push warm surface water west towards Indonesia, and cool water rises near South America.
El Niño. The trade winds weaken and warm water spreads east across the tropical Pacific. Because the warmest water moves, so do the clouds and rain.
Rain shifts. NOAA reports more cloud and rain over the central and eastern Pacific and less over Indonesia. That shift in where air rises and sinks changes weather far away, including over India.
Why India cares. El Niño can weaken India's summer monsoon, but not always. In 1997, a strong El Niño came with a normal monsoon, according to IMD's record of El Niño years. Other factors, such as the Indian Ocean Dipole, also play a part.
The picture is a simplified illustration, not to scale. For the latest numbers, see our posts on how strong this El Niño is and what the forecasts say.
Join the El Niño help room on soshyal.com to ask questions and share what you see in your area.
What you can do
- Read the checked facts
- Share this with your family or building group
- Join the room to ask or offer help
Last checked 17 Oct 2026
Last checked: 17 October 2026. Forecasts can change; check the latest IMD, NOAA, WMO and BoM updates.
Sources
- NOAA CPC, ENSO Diagnostic Discussion (8 Oct 2026)
- Bureau of Meteorology (Australia), ENSO update (13 Oct 2026)
- IMD, El Niño and Indian monsoon table
- Times of India, El Niño explainer (14 Oct 2026)
Pick your room
El Niño 2026: Learn & Help
What El Niño means for India, and a place to ask or offer help.
Always openJoinHyderabad Water Watch
Water-saving tips, leak reports and neighbour help in Hyderabad.
Always openJoinHeat Safety India
Heat warnings, cool spots and looking out for neighbours.
Always openJoinFarmers & El Niño
Farmers sharing rain updates, rabi tips and help.
Always openJoinKids Learn: El Niño
Parents and teachers explaining El Niño to kids. Room is for adults 18+.
Always openJoin