METRIQOm®El Niño is strengthening again — but this one is not developing in the climate of 30 or 50 years ago. It is forming on top of a planet already carrying significantly more heat in its atmosphere and oceans. That distinction is the whole story.
The World Meteorological Organization reported on 31 July 2026 that a strong El Niño is developing and expected to strengthen through August–October 2026, raising the probability of above-normal temperatures across much of the world while shifting rainfall between regions — with a positive Indian Ocean Dipole in the mix, amplifying drought, flood and wildfire risk around the Indian Ocean basin. NOAA's ENSO diagnostic as of 12 August 2026 tells the same story: El Niño is established, with a 97% probability it persists into early spring 2027 and an 81% probability of a very strong event in October–December 2026.
So the strategic question isn't simply what will El Niño do? It is: what happens when a powerful natural climate cycle operates inside an already-warmer climate system?
Two climate signals, working differently
El Niño is a natural component of the El Niño–Southern Oscillation (ENSO). During an event, unusually warm surface waters build across the central and eastern equatorial Pacific, altering circulation, convection, winds and rainfall far beyond the Pacific. Events recur every two to seven years, but no two are identical — their effects depend on intensity, duration, season, geography and interaction with other drivers.
Climate change works differently: rising greenhouse-gas concentrations drive a persistent long-term warming. WMO reports that 2015–2025 were the eleven warmest years on record, and that 2025 stayed around 1.43°C above the 1850–1900 average despite a cooling La Niña, with ocean heat content hitting another record.
Climate change raises the floor. El Niño moves conditions around that increasingly elevated floor. That is where compound risk emerges.
How the two signals amplify risk
It would be wrong to say El Niño and climate change simply multiply temperatures everywhere — the interaction is more complex than that. But several mechanisms widen the risk footprint:
- A higher temperature baseline. A heatwave in a warmer climate starts from a higher floor, and El Niño can add further warmth by shifting heat exchange between the tropical Pacific and the atmosphere. Copernicus reports July 2026 was the joint-second-warmest July on record, ~1.47°C above the 1850–1900 average — reason enough to stop treating historical temperature records as a sufficient picture of future operating conditions.
- Hot oceans reinforce atmospheric risk. WMO reports ocean heat content reached its highest recorded level in 2025, warming during 2005–2025 at more than twice the 1960–2005 rate. Add El Niño's forecast warming of the equatorial Pacific and July 2026's record extra-polar ocean surface temperature, and the result isn't just "warmer weather" — it's a modification of the entire energy and water cycle.
- Rainfall extremes shift in opposite directions. El Niño doesn't produce the same outcome everywhere. For August–October 2026, WMO sees wetter-than-normal odds in the Greater Horn of Africa, parts of Central Asia, southern Europe and southeastern South America — and drier-than-normal conditions across the Indian subcontinent, southern and eastern Australia, parts of Central America, the Caribbean and northern Europe. The same driver can raise flood exposure in one supply chain and drought exposure in another.
- Heat + drought + dry soil = compound fire risk. Each hazard is dangerous alone; together they reinforce one another. Dry soils cut evaporative cooling, vegetation turns combustible, water availability falls, and fire-weather deteriorates. Western Europe is the live warning — its hottest June on record in 2026, with exceptionally low soil moisture straining ecosystems, agriculture, rivers, transport, energy and wildfire risk.
The real business exposure is the chain reaction
The largest consequence is often not temperature itself, but what it triggers: extreme heat → higher cooling demand → peak electrical load → equipment derating → grid stress → disruption. Or heat and drought → reduced water availability → agricultural stress → commodity price pressure → supply-chain disruption. Or extreme rainfall → drainage exceedance → flooding → contaminated runoff → shutdown → environmental liability. These are interconnected operational risks — which is why El Niño belongs inside enterprise risk, asset management, environmental management and business-continuity planning, not only inside a sustainability report.
An important scientific caveat
Climate change does not automatically make every El Niño stronger; the relationship between long-term warming and ENSO amplitude remains complex. But the IPCC assesses that ENSO-related rainfall variability is expected to increase under warming, and that extreme El Niño and La Niña events are likely to become more frequent this century, intensifying existing regional hazards. The defensible conclusion: climate change doesn't create El Niño — it changes the background climate in which El Niño operates, and so changes the risk its impacts carry.
What organisations should do now
Waiting for the peak before adapting is reactive risk management. The better move is to connect seasonal climate intelligence to operational controls:
- Build compound scenarios — test combinations, not warming alone: warming + strong El Niño + drought; warming + El Niño + extreme rainfall; heatwave + low soil moisture + wildfire; high temperature + peak demand + cooling-system failure. This turns climate analysis into operational stress testing.
- Map geographic exposure — not one generic "El Niño risk" for the whole company, but asset → hazard → climate driver → vulnerability → consequence → control. Ports, farms, logistics corridors, water-intensive facilities and energy assets can experience opposite effects in the same event.
- Convert forecasts into trigger levels — forecast → threshold exceeded → management trigger → preventive action → evidence → review, using indicators like soil moisture, reservoir levels, cooling demand, wet-bulb temperature, river levels and wildfire indices.
- Stress-test critical assets — can cooling/HVAC, transformers, water treatment, drainage, firewater systems, generators, cold stores and irrigation operate outside historical design assumptions? Resilience is now an asset-performance issue, not only an environmental one.
- Monitor drivers together — ENSO in isolation isn't enough. A mature dashboard watches ENSO + ocean temperature + IOD + rainfall outlook + drought + heat + local operational indicators. The goal isn't perfect weather prediction; it's spotting when the probability of operational failure is rising.
The leadership takeaway
The next strong El Niño is developing inside one of the warmest climate states modern civilisation has experienced, and that changes the risk equation. Not every region will simply become hotter or drier — impacts vary by geography, season and interaction with other drivers — but organisations should expect more complex combinations of heat, drought, rainfall extremes, water stress, wildfire conditions and infrastructure pressure. The task is no longer to manage climate change on one side and natural variability on the other; it is to manage the interaction between them. The operational question is not whether El Niño or climate change caused a given disruption — it's whether the organisation was designed to stay resilient when both signals aligned.
See how METRIQOm® turns climate signals into operational resilience →