Developing El Niño Breaks Temperature Records Weeks Before Its Expected Peak
PACIFIC OCEAN — September 22, 2026

A powerful El Niño event developing across the Pacific has already reached record-breaking levels, despite being weeks away from its expected peak.

The warming event has rapidly intensified during 2026, raising concerns among climate scientists about increasingly extreme weather conditions around the world.

Recent measurements show sea-surface temperatures in parts of the equatorial Pacific reaching levels that have exceeded previous records for this stage of an El Niño event. The Guardian reported that temperatures in the core region reached about 3.05°C above the 1991–2020 average, surpassing the previous comparable record from 2015.

El Niño Is Still Strengthening
El Niño is a natural climate pattern involving unusually warm ocean temperatures in the central and eastern tropical Pacific.

According to the U.S. National Oceanic and Atmospheric Administration, the event strengthened significantly during August. Sea-surface temperatures in the eastern equatorial Pacific exceeded 3°C above average in some areas.

The Niño 3.4 index, one of the main measures used to monitor El Niño, reached +2.0°C in the latest weekly observation cited by NOAA’s September 17 outlook.

NOAA currently gives more than a 90% chance that a very strong El Niño will continue through the Northern Hemisphere fall and winter.

The Peak Has Not Arrived Yet
What makes the current development particularly notable is its timing.

El Niño events typically reach their strongest levels later in the year. NOAA forecasts that the current event will continue strengthening through the end of 2026.

For October through December, NOAA estimates a 75% chance that the event will reach a historic level exceeding the strength of El Niño events recorded since 1950 under its Relative Oceanic Niño Index.

That means the record-setting measurements being observed now may not represent the eventual maximum strength of the event.

Potential Effects Around the World
El Niño can influence rainfall, temperature and storm patterns far beyond the Pacific Ocean.

Countries in parts of Asia, Australia, Africa and the Americas can experience significant changes in precipitation and temperature during strong El Niño events.

Reuters reported that the developing super El Niño is already raising concerns about food security in Central America, where drought conditions could affect crops and increase pressure on vulnerable communities.

In Indonesia, authorities are also preparing for a delayed rainy season. Reuters reported that about 61% of the country’s land area is expected to experience a later start to the wet season, creating additional challenges for farmers.

Scientists Watching the Event Closely
The Met Office in the United Kingdom has described the developing event as potentially the largest El Niño in living memory.

Scientists emphasize, however, that a strong El Niño does not automatically mean the same weather impacts will occur everywhere. Local conditions depend on several other climate factors.

The Met Office said the event could become one of the strongest El Niño episodes on record, while also noting that El Niño is only one factor influencing weather patterns in the United Kingdom and elsewhere.

For now, scientists are closely monitoring the Pacific as the event continues to strengthen toward its expected late-2026 peak.

Sources: NOAA Climate Prediction Center; Reuters; The Guardian; UK Met Office; ABC News.