The tropical Pacific is transitioning from weak La Niña conditions toward ENSO-neutral, with emerging risks of El Niño development through mid-2026. This climate shift threatens to destabilize global agricultural systems, intensify extreme weather patterns, and drive food affordability crises for vulnerable populations worldwide.
What the evidence shows
Key passages from the source
| Period | La Niña | ENSO-Neutral | El Niño |
|---|---|---|---|
| Mar-May 2026 | 30% | 60% | 10% |
| Apr-Jun 2026 | ~20% | ~70% | ~10% |
| May-Jul 2026 | ~20% | ~60% | ~20% |
Human and systemic impacts
ENSO transitions historically trigger deadly extreme weather events that kill thousands through intensified storms, floods, and droughts. The shift away from La Niña removes climate stability that farmers depend on for crop planning, threatening food production systems that feed billions. Food prices will spike as agricultural uncertainty spreads, pushing vulnerable populations beyond affordability thresholds and forcing mass displacement from climate-stressed regions. The emerging El Niño risk compounds these threats, as such events typically intensify coastal storm systems and disrupt monsoon patterns critical to Asian and African food security.
Farmers face unprecedented uncertainty as ENSO transition disrupts seasonal forecasting reliability during critical planting periods
Broader significance
This ENSO transition occurs at a critical moment when global food systems remain stressed from recent supply chain disruptions and climate impacts. The shift toward potential El Niño conditions represents a fundamental change in global climate patterns that will reshape weather risks, agricultural productivity, and food security across multiple continents through 2026.