Experts predict record warmth and altered rainfall patterns as El Niño intensifies this year
Category: Climate & Environment
As scientists closely monitor the tropical Pacific Ocean, a super El Niño is becoming increasingly likely later this year, with predictions indicating it could be one of the strongest on record. This phenomenon, characterized by a substantial warming of ocean surface temperatures, is expected to have far-reaching impacts on global weather patterns, affecting rainfall, temperatures, and even hurricane activity from summer through winter 2026.
The central and eastern equatorial Pacific waters are showing a steady increase in temperature, following a prolonged La Niña phase that persisted since last summer. According to the European Centre for Medium-Range Weather Forecasts (ECMWF), there is now a 100% chance of reaching super El Niño status by November 2026. This marks a notable increase from March, when the likelihood was only about 55%.
El Niño is a periodic climate pattern that involves the warming of ocean waters in the central and eastern tropical Pacific. It occurs roughly every three to four years, with 27 documented instances since 1950. The last El Niño event took place from summer 2023 into early spring 2024. A super El Niño is defined as an event where sea-surface temperatures exceed the long-term average by more than 2°C. Current forecasts suggest this year's event could reach at least 2.5°C above average, potentially making it the most intense El Niño since the 1870s.
"Confidence is clearly shifting higher on potentially the biggest El Niño event since the 1870s," noted Paul Roundy, a professor at the University of Albany and an expert on El Niño, in a recent post on X. The ECMWF models indicate a tongue of anomalously warm water stretching from the coast of South America to the central Pacific, which is a key indicator of the developing El Niño.
Various computer models are aligning in their predictions, with many indicating that this super El Niño could significantly influence global weather. The impacts of El Niño are complex and can vary widely. Typically, a strong El Niño suppresses hurricane activity in the Atlantic Ocean but increases it in the Eastern Pacific. The latest forecasts estimate 13 named storms and six hurricanes for the 2026 Atlantic hurricane season, which is close to the average of 14 named storms and seven hurricanes.
Interestingly, the ECMWF is not yet showing a strong decrease in hurricane forecast numbers for the season, indicating that the most pronounced effects of the super El Niño may not be felt until later in the hurricane season. This is particularly important for areas along the U.S. mainland, where near-normal hurricane activity is expected.
The implications of a super El Niño are vast. In the southern United States, the forecast predicts above-average rainfall during the fall and winter months, which could be beneficial for drought-stricken regions. The warmer ocean waters are expected to influence winter weather patterns significantly, turbocharging the southern branch of the jet stream, leading to wetter conditions across states like California and Florida.
Globally, El Niño's effects extend beyond the United States. Regions such as parts of Africa, India, and Australia may experience droughts, whereas countries like Ecuador and Peru could see increased rainfall. This shift in precipitation patterns can lead to severe weather events, including floods and wildfires, impacting agriculture, water resources, and ecosystems worldwide.
"Detecting El Niño during its formation and forecasting its evolution gives us early warning of changing risks for many weather phenomena, including floods, droughts, heat waves, hurricanes, and severe thunderstorms," said Nat Johnson, emphasizing the importance of monitoring these changes.
It is important to note that the impacts of El Niño can vary significantly from one event to another. Each El Niño has its unique characteristics, and predicting its exact consequences can be challenging. The phenomenon is influenced by many factors, including the state of the atmosphere and ocean currents. The so-called spring predictability barrier makes early forecasts less reliable, and as we move into summer, the accuracy of predictions is expected to improve.
As scientists continue to observe the warming waters in the Pacific, they are also considering the broader implications of a super El Niño in the face of climate change. A December 2025 study indicated that such events could drive sudden climate regime shifts, affecting both temperatures and precipitation patterns. With last year being one of the warmest on record, the potential for new heat records in 2026 is a growing concern.
Looking ahead, meteorologists will be closely monitoring the development of this super El Niño. The next substantial westerly wind event, which can exacerbate warming, is expected to occur during the last ten days of May. This event will be a key indicator of how the super El Niño will manifest as we approach the peak of the hurricane season.
As the world braces for the possible impacts of this super El Niño, the importance of preparedness matters. With the potential for extreme weather events, communities must be ready to adapt to changing conditions, whether that means preparing for floods, droughts, or shifts in agricultural productivity. The history of super El Niño events shows of the need for vigilance and proactive measures to mitigate risks associated with climate variability.
In sum, the forecast for a super El Niño later this year carries with it a mix of anticipation and concern. As scientists continue to refine their predictions, the focus will remain on how this phenomenon will shape weather patterns across the globe, with the potential for both beneficial rains and destructive storms.
As we approach the summer months, it is clear that the world is on the brink of experiencing one of the most notable climate events in recent history. The implications of the super El Niño will be felt not just in the immediate future, but for years to come, making this a phenomenon worth watching closely.