Monitoring agencies have confirmed that the current El Niño has surpassed previous records, even though its full impact is still unfolding.
Background
El Niño is a naturally‑occurring climate pattern that typically recurs every two to seven years and can last about a year. It arises when trade winds weaken or reverse, allowing warm water from the western Pacific to spread eastward, releasing heat into the atmosphere and altering global weather patterns.
Current Record
Daily sea‑surface temperatures in a key central‑eastern Pacific region were measured at 3.05 °C above average on 19 September, overtaking the previous record of 3.02 °C set during the strong 2015 El Niño. While some longer‑term metrics have not yet broken records, scientists expect them to do so as the event approaches its peak later this year.
Professor Adam Scaife, Head of Long‑Range Prediction at the Met Office, noted: “We have been signalling for months that the developing El Niño will be an unprecedented event. The fact that it has already exceeded previous records – with several weeks to go before it peaks later this year – shows the enormity of this El Niño.”
Implications
El Niño can shift weather patterns worldwide, with several effects already observed:
- Increased risk of floods in coastal Ecuador, Peru, and the southern United States.
- Heightened danger of drought and wildfires in Brazil, Australia, and Indonesia (the latter already affecting about 12.5 million people).
- Reduced monsoon rainfall in India – data up to 22 September show a 15 % shortfall versus normal.
- Suppressed Atlantic hurricane activity; 2026 has seen no hurricanes to date, a record‑setting lull.
In the United Kingdom, the Met Office has reported “signals for increased rainfall and storminess in autumn here in the UK,” especially into November and December.
Uncertainty
Although the El Niño is now the strongest on record, its ultimate impact remains uncertain. Professor Scaife cautioned that scientists are still assessing whether the weather effects will be proportional to its magnitude, and that each El Niño event can produce different outcomes.
As the phenomenon moves toward its anticipated peak later in 2026, researchers will continue to track sea‑surface temperatures, the Relative Oceanic Niño Index (RONI), and emerging weather patterns to gauge its global influence.