World Braces for Record-Breaking El Niño Weather Impact

The year 2026 is poised to be notable for potentially becoming the largest El Niño phenomenon observed. This natural climatic occurrence, which translates to 'the boy' in Spanish, takes place irregularly, approximately every two to seven years, when sea temperatures in the Eastern Pacific Ocean rise significantly. Experts alerted the world earlier this year to the possibility of a strong El Niño developing, driven by excessive heat in the ocean's subsurface layers and a predicted weakening of low-level trade winds.

By the first week of June, the World Meteorological Organization (WMO) confirmed that El Niño conditions had officially commenced. As summer progressed, experts voiced concerns that this event could become unprecedented, earning nicknames like 'Godzilla' or 'Super' El Niño. The WMO forecasts that sea-surface temperatures in the central and eastern tropical Pacific will reach record highs during the final months of the year: October, November, and December.

The Niño 3.4 index, a widely used measurement for sea-surface temperature anomalies, highlighted a significant increase, rising from an average of +1.6 °C above normal in June 2026 to +2.5 °C above normal by August. The forecast for October, November, and December suggests a further climb, potentially reaching approximately +3.7 °C, marking the highest level since such observations began. This temperature surge surpasses the previous record of +2.6 °C documented from November 2015 to January 2016.

Historically, El Niño events have been associated with record-breaking temperatures, exacerbating droughts, flooding, and wildfire risks globally. While the primary effects are often felt in tropical regions, Europe may experience milder, wetter winters, along with a more unstable polar vortex, which can lead to an increased likelihood of cold spells.

Regions such as South America, the southern United States, East Africa, and Central Asia have faced heightened flood risks during previous El Niño episodes. Concurrently, areas like Australia, northern parts of South America, and Indonesia have experienced elevated chances of drought and wildfires. Experts indicate that extreme weather in distant locales could also affect Europe, particularly with regard to food supply.

The IHE Delft Institute for Water Education based in the Netherlands has studied regions severely impacted by El Niño, warning that several staple crops imported by Europe may be jeopardised. These include essential crops like maize and beans in Nicaragua, raising concerns over food security and economic stability in that region. In Colombia, Northeast Brazil, and India, a lack of rainfall and dwindling river flows may force irrigated farms to depend more heavily on groundwater, raising risks of over-extraction and potential shortages in exports.

The WMO's current projections estimate that El Niño will reach its peak in December 2026 and is expected to persist into the following year. WMO Secretary-General Celeste Saulo stated, “El Niño is firmly established and strengthening rapidly.” Forecasts indicate a nearly certain chance—approaching 100 per cent—that this El Niño will remain active through February 2027, making it one of the most powerful occurrences since at least 1950.

This prediction stems from comprehensive data collected by the WMO, drawing on resources from 13 national and international entities, including ocean buoys and satellite data. Though El Niño is expected to continue into spring 2027, its effects will have lasting implications beyond that period. Experts caution that 2027 may very well be the hottest year on record, as most El Niño events typically raise global average temperatures by approximately 0.2 °C. Such an increase, while relatively minor, compounds the existing warming caused by anthropogenic climate change.

The burning of fossil fuels has driven global surface temperatures up by approximately 1.3 °C to 1.4 °C above pre-industrial levels. This significantly contributes to current extreme weather incidents across Europe, including a notably scorching summer in 2025, which was recorded as the third hottest year thus far—exceeding even the unusually warm El Niño year of 2016, despite the naturally cooling effect typically associated with such phenomena.