UN WMO Warns of Global Extreme Heat, Urges El Niño Preparedness for 2026
The United Nations' World Meteorological Organization (WMO) has issued an urgent warning for a developing El Niño in 2026, predicting it will drive extreme global temperatures and heighten risks of heatwaves, droughts, and heavy rainfall worldwide. It urges immediate preparedness for widespread impacts on agriculture, water, and public health, especially across Asia, including India.
Key Highlights
- UN's WMO warns of developing El Niño for June-August 2026.
- Forecasts moderate to strong El Niño continuing until November 2026.
- El Niño to intensify global temperatures, increasing extreme heat risks.
- Threatens widespread droughts, heavy rainfall, and humanitarian crises.
- India faces below-normal monsoon, agricultural stress, and potential floods.
- UN urges immediate global preparedness for climate impacts.
The United Nations' World Meteorological Organization (WMO) issued a critical alert on June 2, 2026, confirming the onset of a developing El Niño event and urging global preparedness for its far-reaching impacts on extreme weather and temperatures. The WMO forecasts an 80% likelihood of El Niño conditions emerging between June and August 2026, with probabilities increasing to near or above 90% for its continuation until at least November. This natural climate phenomenon, characterized by the warming of sea surface temperatures in the central and eastern Pacific Ocean, is expected to significantly influence global weather patterns and drive up temperatures worldwide.
UN Secretary-General António Guterres emphasized the gravity of the situation, stating that the world must treat this as an "urgent climate warning" and that El Niño conditions "will pour fuel on the fire of a warming world." WMO Secretary-General Celeste Saulo further highlighted the need to prepare for a potentially strong El Niño event, which is set to exacerbate drought, heavy rainfall, and increase the risk of heatwaves both on land and in the ocean.
The WMO's forecast predicts above-average temperatures in most parts of the world from June to August 2026. The most recent strong El Niño, occurring in 2023-24, contributed to 2024 being the hottest year on record, and experts fear that the current event, amplified by existing global warming, could make 2026 or 2027 among the warmest years ever recorded. While there is no direct evidence that climate change increases the frequency or intensity of El Niño events, it is confirmed to amplify their associated impacts, such as extreme heatwaves and heavy rainfall, due to a warmer ocean and atmosphere providing more energy and moisture.
The humanitarian implications are severe. Saulo warned of increased heat-related illnesses, a wider spread of vector-borne diseases, and intensified pressure on food and water systems. Communities already struggling are expected to be pushed further beyond their limits. The risks include disruptions to agriculture, energy supplies, trade, water resources, and livelihoods across entire regions.
For India, the implications of the 2026 El Niño are particularly concerning. The India Meteorological Department (IMD) has forecast a 'below-normal' monsoon season, predicting rainfall at around 90% of the Long Period Average (LPA), a downgrade from earlier estimates. There is a 60% probability of deficient rainfall, which typically signals a drought year. This anticipated rainfall deficit poses a significant threat to the Indian economy, as nearly 52% of its cultivated land is rain-fed, making over 40% of national food production heavily dependent on the Southwest Monsoon. Lower rainfall could lead to reduced groundwater recharge, depleted reservoirs, and intensified water stress.
Furthermore, the concern is not solely about total rainfall but also its erratic distribution, potentially leading to longer dry spells and sudden, intense downpours. This 'distorted monsoon' makes preparedness even more challenging, with risks of both drought-like conditions and localized flooding, impacting kharif sowing and crop productivity. Experts also warn that the El Niño could lead to more frequent heatwaves across Northwest India. The combination of a weak monsoon, the absence of a strong Indian Ocean counterbalance, and an already amplifying climate system makes 2026 particularly risky for India, threatening food security, water security, and potentially fueling inflation.
While some national weather agencies have used terms like "Super El Niño" to describe the potential intensity, the WMO has maintained a more cautious stance, noting that some models do not predict a strong event, though most suggest it will be at least moderate and possibly strong. Regardless of the exact terminology, the scientific consensus underlines the urgent need for robust anticipatory actions, early warning systems, and strategic planning across all climate-sensitive sectors globally, and especially in vulnerable regions like South Asia.
Frequently Asked Questions
What is El Niño and when is it expected to impact the world in 2026?
El Niño is a natural climate phenomenon characterized by a periodic warming of sea surface temperatures in the central and eastern Pacific Ocean. The UN's World Meteorological Organization (WMO) predicts an 80% likelihood of El Niño conditions developing between June and August 2026, with a high probability (near or above 90%) of it continuing until at least November 2026.
What are the primary global risks associated with this El Niño event?
The developing El Niño is expected to drive up global temperatures, increasing the risk of extreme heatwaves on land and in oceans, exacerbated droughts, and heavy rainfall in various regions. This poses significant threats to agriculture, water resources, public health (including heat-related illnesses and vector-borne diseases), and overall humanitarian stability worldwide.
How will the 2026 El Niño specifically affect India?
For India, the El Niño is expected to lead to a 'below-normal' monsoon season, with the India Meteorological Department (IMD) forecasting rainfall at approximately 90% of the Long Period Average. This increases the likelihood of deficient rainfall, potentially causing widespread droughts, impacting agricultural output, stressing water resources, and increasing the frequency of heatwaves across the country. There's also a risk of a 'distorted monsoon' with erratic rainfall patterns.
Is climate change making El Niño worse?
While there is no evidence that climate change increases the frequency or intensity of El Niño events themselves, the World Meteorological Organization states that a warmer ocean and atmosphere, resulting from climate change, can amplify the associated impacts. This means extreme weather events like heatwaves and heavy rainfall linked to El Niño can become more severe.
What actions are being urged in response to the El Niño warning?
The UN and WMO are urging all countries to prepare immediately. This includes bolstering early warning systems, implementing anticipatory actions, and making informed decisions across climate-sensitive sectors like agriculture, health, energy, and water management to protect lives and livelihoods from the impending extreme weather conditions.
