El Niño gets its name from a little boy and its effects can reach millions of children around the world.

The name dates back centuries, when Peruvian fishermen noticed unusually warm ocean waters near the coast around Christmas. They called the phenomenon El Niño, meaning “the little boy” in Spanish, in reference to the Christ Child. Today, the same climate phenomenon is drawing global attention for a far more serious reason.

UNICEF warned on 6 October 2026 that more than 347 million children across nearly 100 countries and territories live in areas expected to experience unusually wet or dry conditions linked to the developing 2026 to 2027 El Niño.

How a Little Boy Changes the World's Weather

El Niño is a natural climate pattern that begins with unusually warm waters in the central and eastern tropical Pacific Ocean. Normally, trade winds push warm surface water towards Asia and Australia, allowing colder water to rise near South America. During El Niño, these winds weaken and warm water moves eastwards. This changes where heat and moisture enter the atmosphere, influencing rainfall and weather patterns far beyond the Pacific. Some regions can face drought, while others experience heavier rain and flooding.

El Niño occurs on average every two to seven years and typically lasts nine to twelve months. However, the climate system does not reset on a fixed annual schedule. Conditions can return to normal or shift towards La Niña, the cooler phase of the same climate cycle. Each event is different, and its effects depend on its strength, timing and location.

Why This Event Has Scientists Watching Closely

The concern is the strength of the current event. The US National Oceanic and Atmospheric Administration (NOAA) reported on 8 October that there was an 83 per cent chance of the event reaching its benchmark for a historic El Niño during October to December. NOAA also put the probability of strong to very strong conditions continuing through January to March 2027 above 83 per cent. The World Meteorological Organization's October outlook forecasts that sea surface temperatures in the key Niño 3.4 region could average around 3.7°C above normal during October to December, potentially exceeding previous modern records.

History offers a sobering reminder of what can happen when extreme weather meets weak food systems and inadequate preparation. The global famine of 1876 to 1878 coincided with widespread drought during strong El Niño conditions. A peer reviewed study published in the Journal of Climate estimated that famine deaths likely exceeded 50 million, around 3 per cent of the world's population at the time.

The research also makes an important distinction: drought was not the only cause. Political and economic failures, including the neglect of traditional water and grain storage systems, helped turn crop losses into mass starvation. This does not mean the current El Niño will cause a similar death toll. It shows why preparation and access to basic necessities matter so much when climate conditions deteriorate.

Why Children Have So Much at Stake

For children, climate disruption rarely ends with the weather. A drought can damage crops, reduce family incomes and push food prices beyond what some households can afford. A flood can destroy homes, contaminate drinking water and spread disease. When families lose their livelihoods or are forced to leave their homes, children may also lose access to healthcare, nutritious food and a stable place to learn. UNICEF identifies these risks, alongside displacement and school closures, as major concerns associated with the developing El Niño.

The scale of exposure is especially concerning in Asia and the Pacific, where UNICEF estimates that 190 million children live in areas expected to experience unusually wet or dry conditions. The risks differ across regions. Some countries face the prospect of agricultural drought and water shortages, while wetter conditions in parts of eastern Africa could bring flooding and waterborne disease. In both cases, disrupted access to food, clean water and education can make existing hardships worse.

The longer term concern is what happens after the immediate crisis passes. UNICEF reports that climate related hazards disrupted schooling for at least 171 million students worldwide in 2025. When schools close, buildings are damaged or families move, returning to normal learning can take time. Similarly, a child who experiences inadequate nutrition or interrupted healthcare may continue to face the consequences after the floodwater recedes or the drought eases. These outcomes are not inevitable, but they become harder to prevent when essential services are already fragile.

Preparedness Is More Than Disaster Response

We cannot prevent El Niño from occurring, but we can reduce the harm it causes. Early warning systems can give communities time to prepare for water shortages or flooding. Schools can develop plans to keep children safe and continue learning during emergencies. Governments and humanitarian organisations can protect food supplies, strengthen access to clean water and position essential supplies before conditions worsen. UNICEF and Save the Children have called for education systems to identify vulnerable schools and learners, strengthen contingency plans and arrange the funding needed for early action.

This is where the larger lesson lies. Climate resilience should not be judged only by how quickly a country repairs roads, homes and buildings after a disaster. It should also be measured by whether children can continue learning, receive healthcare and access safe water and nutritious food while the crisis unfolds. Those outcomes depend on decisions made well before an emergency begins.

Climate economist and Nobel laureate William Nordhaus wrote, “Our futures are not in the stars but in ourselves.” The meaning is simple: the future is not decided for us. Forecasts like this one give governments and communities a chance to act before risks become tragedies.

References:

UNICEF Fast Facts: Over 347 million children in nearly 100 countries will be exposed to one of the strongest El Niño events on record. (2026, October 6). UNICEF Global. https://www.unicef.org/press-releases/unicef-fast-facts-over-347-million-children-nearly-100-countries-will-be-exposed-one

Understanding El Niño | National Oceanic and Atmospheric Administration. (2016, February 2). Www.Noaa.Gov. https://www.noaa.gov/understanding-el-nino

Climate Prediction Center: ENSO Diagnostic Discussion. (n.d.). Www.Cpc.Ncep.Noaa.Gov. Retrieved October 14, 2026, from https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/enso_advisory/ensodisc.shtml

Sea-surface temperatures reflect strengthening El Niño. (2026, October 6). World Meteorological Organization. https://wmo.int/media/news/sea-surface-temperatures-reflect-strengthening-el-nino

Singh, D., Seager, R., Cook, B. I., Cane, M., Ting, M., Cook, E., & Davis, M. (2018). Climate and the Global Famine of 1876–78. Journal of Climate, 31(23), 9445–9467. https://doi.org/10.1175/jcli-d-18-0159.1

The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel 2018. (n.d.). NobelPrize.Org. Retrieved October 14, 2026, from https://www.nobelprize.org/prizes/economic-sciences/2018/nordhaus/biographical/

Author(s, & UNICEF, Save the Children. (2026, October 12). El Niño Practical Guidance for the Education Sector. UNICEF Global. https://www.unicef.org/reports/el-ni%C3%B1o-practical-guidance-education-sector

Author(s, & UNICEF, Save the Children. (2026, October 12). El Niño Practical Guidance for the Education Sector. UNICEF Global. https://www.unicef.org/reports/el-ni%C3%B1o-practical-guidance-education-sector

190 million children exposed to El Niño-related climate risks across Asia and the Pacific – UNICEF. (2026, October 6). UNICEF Pacific Islands. https://www.unicef.org/pacificislands/press-releases/190-million-children-exposed-el-ni%C3%B1o-related-climate-risks-across-asia-and-pacific

UNICEF Fast Facts: Over 347 million children in nearly 100 countries will be exposed to one of the strongest El Niño events on record. (2026, October 6). UNICEF Global. https://www.unicef.org/press-releases/unicef-fast-facts-over-347-million-children-nearly-100-countries-will-be-exposed-one