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# WMO Warns Strong El Niño Could Push Ocean Heat Higher
- URL: https://www.theglobalvoice.com/wmo-warns-strong-el-nino-could-push-ocean-heat-higher/
- Published: 2026-10-12T13:27:15.000Z
- Updated: 2026-10-12T13:27:15.000Z
- Description: WMO says El Niño is strengthening rapidly and may become one of the strongest since 1950, with record Pacific sea-surface temperatures forecast into late 2026.
- Author: TGV Desk
- Tags: Climate, El Niño, WMO, Ocean Temperatures, Extreme Weather, Pacific Ocean, Climate Science, The Day So Far, Live Wire, has-audio

The warmest signal in the climate system is now coming from a familiar stretch of the Pacific. Across the central and eastern equatorial ocean, where scientists track El Niño through the Niño 3.4 index, sea-surface temperatures are forecast to rise to levels not seen in the modern observational record.

The World Meteorological Organization said on 8 October that El Niño is now “firmly established” and strengthening rapidly, with a near-100 percent likelihood that it will persist through February 2027\. Its latest [Global Seasonal Climate Update](https://wmo.int/news/media-centre/sea-surface-temperatures-reflect-strengthening-el-nino?ref=theglobalvoice.com) forecasts the October-November-December Niño 3.4 sea-surface temperature anomaly at about 3.7°C above normal, peaking around December. That would exceed the previous seasonal benchmark of 2.6°C recorded during the powerful 2015-16 El Niño.

El Niño is not a new source of planetary heat. It is a rearrangement of heat already stored in the ocean. During an El Niño event, weakened trade winds allow unusually warm water to spread across the central and eastern tropical Pacific, disrupting the normal upwelling of colder water and shifting atmospheric circulation. WMO’s [ENSO explainer](https://wmo.int/themes/el-nino-la-nina-phenomena?ref=theglobalvoice.com) notes that these events usually develop between March and June, peak between November and February, and influence temperature and rainfall patterns across different regions.

What makes the current event more consequential is the ocean it is drawing from. WMO said global sea-surface temperature reached an all-time observed high in August. The European Union’s Copernicus Climate Change Service reported that [August 2026 was the warmest August on record globally](https://eu-space.europa.eu/components/earth-observation-copernicus/image-of-the-day/august-2026-has-been-warmest-august-record-globally?ref=theglobalvoice.com), with a global-average surface air temperature of 16.96°C, 0.85°C above the 1991-2020 average. In such a background state, El Niño can help lift global temperatures further and make some regional extremes more likely.

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The forecast is not a map of daily weather. WMO cautions that seasonal outlooks describe probabilities, not guarantees. For October to December, its update points to an overwhelming likelihood of above-average temperatures across large areas. It also forecasts wetter-than-normal conditions across the central and eastern equatorial Pacific, the Greater Horn of Africa, parts of Central Asia and coastal East Asia, northern parts of the Arabian Peninsula, parts of North America south of 45°N and southeastern South America. Drier-than-normal conditions are forecast over the western Pacific, the equatorial Atlantic, the Indian subcontinent, southern Central America, parts of the Caribbean and northwestern South America.

For India, that dry signal is crucial because El Niño can suppress rainfall over parts of South Asia, though the impact depends on timing, intensity and interaction with other climate drivers such as the Indian Ocean Dipole. WMO said a positive Indian Ocean Dipole is expected to peak in October before declining, adding another layer to regional rainfall uncertainty.

There are also physical signs beyond surface temperature. A NASA visualization of [Pacific sea-surface height anomalies](https://svs.gsfc.nasa.gov/31399/?ref=theglobalvoice.com) explains that El Niño’s warmer water can displace colder upper-ocean water and raise sea level locally through thermal expansion. Such measurements help scientists track how heat is moving through the ocean, not just how warm the surface appears.

WMO is careful about one common claim: it says there is no evidence that climate change increases the frequency or intensity of El Niño events. What a warmer climate can do is amplify associated impacts, because a warmer ocean and atmosphere hold more energy and moisture. The current warning is not that El Niño alone is rewriting the climate system, but that it is arriving in an ocean already carrying exceptional heat.