Super El Niño Is Looming: Here’s How It Will Affect UK Weather

A possible Super El Niño is already raising concern among climate scientists because it could push global temperatures higher and disturb weather patterns across several regions. El Niño happens when sea surface temperatures in the central and eastern tropical Pacific become unusually warm, influencing rainfall, heat, storms, and pressure systems far beyond the Pacific itself. The Met Office says clear signs of a developing El Niño were emerging in April 2026, while NOAA reported a 61% chance of El Niño developing between May and July 2026.

For the UK, the effects are usually less direct than in tropical regions, but they can still matter. A strong or “super” El Niño may increase the chance of unusual weather patterns, including warmer spells, heavier rainfall, changes to Atlantic storm tracks, and a more unsettled winter. It does not guarantee one exact forecast for every town, but it can tilt the odds toward certain conditions. Here are 10 ways it could affect UK weather.