El Niño Threatens New Weather Disruption as Ocean Heat Climbs
The WMO’s COP31 assessment warns that intense ocean warming and a strengthening El Niño could raise risks across agriculture, energy and infrastructure.
A strengthening El Niño could bring another period of heightened weather disruption into 2027, according to a World Meteorological Organization assessment released at the COP31 climate conference in Türkiye.
The WMO’s November 9 update says 2026 is on course to rank among the four warmest years recorded. The January-to-September global mean temperature was approximately 1.47 degrees Celsius above the 1850–1900 average, while sea level and ocean heat continued to reach records.
The report is a global assessment, not a forecast of a specific disaster in any city. Its significance lies in the rising background risks that businesses, governments and households must consider when planning for weather shocks.
Why El Niño matters
El Niño involves changes in the tropical Pacific Ocean that influence atmospheric circulation around the world. Depending on the location and season, the pattern can increase the probability of drought, heavy rainfall or unusual temperatures.
The WMO says the current episode intensified from August and is expected to grow stronger toward December. That could alter agricultural growing conditions, water availability and electricity demand well into next year.
These changes do not operate identically everywhere. Regional forecasts are essential, and the effects can be amplified or reduced by local geography and other climate patterns.
Economic exposure
Agriculture is vulnerable when rainfall arrives too early, too late or in unusually concentrated bursts. Dry conditions may reduce crop yields and hydropower output, while floods can block roads or damage irrigation systems.
Energy markets face competing pressures. Heat can raise air-conditioning demand, while low rainfall can reduce hydropower. Utilities may need backup generation or imports precisely when neighboring areas are experiencing similar stresses.
Shipping, tourism and insurance can also be affected by storm damage and changing water conditions. Companies with supply chains concentrated in exposed regions may need alternative suppliers and contingency inventories.
Ocean indicators signal longer risks
The WMO says the past twelve years are set to be the warmest on record, with preliminary data pointing to another annual high in ocean heat content. Warming seas contribute to sea-level rise and can influence storm intensity.
The agency also reports that global mean sea level reached its highest point in the satellite record, which began in 1993. Coastal infrastructure therefore faces not only episodic events but a longer-term change in baseline exposure.
Separating long-term climate trends from individual weather events is important. An El Niño episode can affect seasonal risks without explaining every flood, drought or heatwave.
A response before impact
Improved observation networks and early warnings can help governments take action before hazards occur. The WMO has highlighted financing for weather stations and the need to keep existing equipment operating, especially where reporting gaps weaken regional forecasts.
Forecasts are only useful if they reach the institutions and households able to act. Farmers may need planting advice, utilities need water forecasts and emergency managers need transport and shelter plans.
The latest climate assessment points to an uncomfortable reality: weather volatility is becoming a recurring economic planning issue. Its value lies in encouraging decisions based on regional risk signals before losses materialize.
Insurers and lenders are increasingly interested in these patterns because disasters can affect credit risks and asset valuations. A more volatile weather baseline may change construction standards, insurance premiums and the location of new investment. Early adaptation can reduce losses but requires sustained funding long before a damaging event occurs.
