United Nations Secretary-General António Guterres issued a stark new warning Friday, saying a rapidly strengthening El Niño weather event, supercharged by human-caused climate change, is “adding fuel to a planet already on fire” and pushing the global climate system into unprecedented, dangerous uncharted territory.
Two months prior, Guterres had cautioned the world that El Niño was approaching. Now, he told the UN body, the phenomenon has fully arrived—and is rapidly cranking up global temperatures beyond what communities have ever prepared for.
El Niño, a naturally occurring climate pattern marked by elevated sea surface temperatures across the central and eastern equatorial Pacific, triggers cascading shifts in global wind patterns, atmospheric pressure, and rainfall distributions that push overall global average temperatures higher. But decades of human greenhouse gas emissions have amplified these impacts dramatically: a warmer ocean and atmosphere already hold far more excess energy and moisture, creating ideal conditions for more frequent and more intense extreme weather events ranging from deadly heatwaves to catastrophic heavy rainfall.
“This summer has already put us through a trial by fire: record-shattering heat domes trapping communities in lethal temperatures, apocalyptic wildfires raging across Spain, France and countless other regions, and thousands of lives lost to scorching conditions,” Guterres said. “But the latest science tells us this is only the opening act—worse is still to come.”
Data from the World Meteorological Organization (WMO) confirms the severity of the current event: Pacific sea surface temperatures driving this El Niño have never hit this level of warmth so early in the event’s cycle, with current average temperatures sitting 3 degrees Celsius (5.4 degrees Fahrenheit) above long-term normal levels. The WMO’s seasonal forecast projects that nearly every landmass on Earth will see above-average temperatures through the end of October.
“When you combine record-warm Pacific waters with a planet already heated by fossil fuel emissions, we face a very real risk that this event will shatter every existing global temperature record and bring even more devastating impacts to communities across every continent,” Guterres warned. “We are in uncharted territory.”
The risks stretch far beyond extreme heat alone. Guterres noted that India’s critical monsoon season has seen well below average rainfall so far, while prolonged hotter, drier conditions are forecast across a swathe of regions including Central America, the Caribbean, parts of South America, South Asia, the Southwest Pacific, Europe and Africa. Other regions face heightened risk of catastrophic flooding driven by the extra moisture in a warmed atmosphere.
Guterres concluded that the evidence is unambiguous: “the climate crisis is in overdrive.” To address the immediate threat and root causes, he laid out four urgent priorities for global action.
First, governments must implement national and city-wide heat action plans paired with expanded early warning systems, and guarantee widespread access to sustainable cooling solutions to protect vulnerable populations from lethal heat.
Second, nations must update labor regulations to enforce heat safety standards, ensuring that vulnerable outdoor and frontline workers—including those in the global garment industry, one of the most at-risk sectors—do not have to risk their lives to earn a living.
Third, extreme heat resilience must be integrated into the core design of critical public infrastructure, including cities, residential homes, schools, and hospitals, with dedicated funding and planning allocated to heat adaptation.
Fourth and most fundamentally, Guterres emphasized, the world must end its reliance on the fossil fuels that are driving planetary warming. Rather than treating each climate disaster as an isolated tragedy to be responded to after the fact, global leaders must address the root cause of the amplified El Niño and extreme weather crisis: ongoing fossil fuel extraction and use.