Relief finally seemed to be returning to global markets. Then, almost immediately, another problem appeared on the horizon. This time, the concern is not geopolitics but weather, and the potential economic fallout could be enormous.
Only days after President Donald Trump signaled a possible agreement with Iran that could ease pressure on energy markets, experts began focusing on a newly formed El Niño event. Why does that matter? In many cases, El Niño has a habit of affecting everything from food production to global trade.
The El Niño effect
Recently, the National Oceanic and Atmospheric Administration (NOAA) confirmed that El Niño has formed in the Pacific Ocean. Early forecasts suggest it could become a strong event. Right now, NOAA sees a 63% chance that ocean temperatures will rise more than 2.0°C above normal, a level often linked to powerful El Niño conditions. The World Meteorological Organization has shared a similar forecast.
Under normal conditions, Pacific winds push warm water toward Asia and Oceania. During El Niño, those winds weaken, leaving warmer water closer to the Americas. That shift can affect weather around the world. Some areas may face drought, while others could see heavier rain and flooding.
Food production often feels the impact first. Extreme weather can damage crops, reduce harvests, and push prices higher. As a result, staples such as wheat, corn, and rice could become more expensive if current forecasts prove correct.
More than weather
Looking back, the economic costs have been staggering. Research published in Science found that the powerful El Niño events of 1982 and 1997 caused global income losses of roughly $4.1 trillion and $5.7 trillion. Over the long term, cumulative losses could reach $84 trillion.
Trade networks are not immune either. Back in 2023, low water levels linked to El Niño forced the Panama Canal to reduce daily ship traffic. Could similar disruptions return? If forecasts hold, businesses and governments may soon have another major challenge to manage.
