Meteorologists and climate scientists warn that an unusually strong El Niño could develop during the second half of 2026.
The phenomenon threatens to disrupt global weather patterns, potentially triggering severe droughts in Asia and altering hurricane activity in the Pacific Ocean. Because these shifts can impact food security and infrastructure, international monitoring agencies are increasing their surveillance of equatorial waters.
According to the National Oceanic and Atmospheric Administration (NOAA), there is a high probability that the event will form between May and July 2026 [1]. The Universidad Nacional Autónoma de México (UNAM) said that a "Super-El Niño" could persist through the winter of 2026-2027 [2].
In Mexico, the Servicio Meteorológico Nacional (SMN), CONAGUA, and UNAM have alerted officials to the risk of extreme rainfall and intense heat. The states of Guerrero, Oaxaca, and Chiapas are identified as areas particularly vulnerable to these disruptive weather patterns [3].
Climate models currently show a rapid advance of warm water in the equatorial Pacific. Scientists said the combination of this natural cycle with ongoing global warming could intensify the event [4]. This synergy may lead to record-breaking temperatures and more volatile storm tracks than seen in previous cycles.
The impact is expected to be global in scope. While Mexico faces localized flooding and heat, other regions may experience extreme moisture deficits, leading to agricultural failures in parts of Asia [3, 5].
“An unusually strong El Niño could develop in the second half of 2026”
The convergence of a strong El Niño cycle with long-term global warming trends suggests a higher likelihood of 'compound extremes.' When natural oscillations overlap with rising baseline temperatures, the resulting weather events often exceed historical precedents, making traditional forecasting models less reliable and increasing the urgency for adaptive infrastructure in vulnerable coastal and agricultural regions.
