Ireland’s winter outlook is separate from warning of potentially record El Niño

The World Meteorological Organization warned on 21 October that the developing El Niño could reach unprecedented strength later this year, according to RTÉ. For Ireland, the warning does not establish what winter will bring: RTÉ reports that North Atlantic weather patterns have a stronger and less predictable influence on the country.

RTÉ reported that sea-surface temperatures in a key tropical Pacific monitoring region could reach 3.8°C above average from November through January. That is a forecast for the El Niño region, not for average sea temperatures worldwide. WMO Secretary-General Celeste Saulo said the event could be unprecedented against four decades of monitoring and was expected to peak toward the end of 2026, with effects continuing afterward.

What the El Niño forecast means for Ireland

Ireland’s winter weather is primarily shaped by North Atlantic atmospheric circulation, including the jet stream and the North Atlantic Oscillation, RTÉ reported. That makes any direct influence from this El Niño difficult to pin down. Met Éireann’s separate seasonal outlook, issued on 20 October, projects Irish temperatures 0.5°C to 1°C above normal from November through January and above-average rainfall overall. Its wetter signal is strongest in November and December, particularly in the south.

The seasonal outlook describes broad patterns, rather than predicting individual storms, floods, snowfalls or prolonged cold spells. RTÉ also reported concern that a powerful El Niño could contribute to exceptionally high global temperatures in 2027; that remains a possible consequence of the forecast event.

UN calls for early preparation

Saulo warned that people displaced or living in conflict zones could be especially vulnerable where housing, water, sanitation and healthcare are already under pressure. She said climate forecasts and early-warning systems offer a chance to reduce harm, but that the time to prepare is limited, RTÉ reported.

UN humanitarian chief Tom Fletcher said he had released $50 million to support 11 exposed countries, including Chad, El Salvador, Ethiopia, Somalia and South Sudan, Euronews reported. He urged governments and financial institutions to provide funding before the damage occurs. The UN’s funding appeal was covered in NewsJaws’ earlier report; RTÉ’s Ireland-focused account adds the distinction between the global warning and Met Éireann’s separate winter outlook.