Met Office predicts record-breaking El Niño could make 2027 hottest year
Britain's national weather agency forecasts an El Niño event peaking at over 3°C above normal, the largest in more than a century. This could push global temperatures to record highs, potentially making 2027 the hottest year on record. The agency warns the event is unprecedented and will add to climate change stresses.
The Met Office’s forecast centers on a Pacific Ocean temperature anomaly exceeding 3°C, a threshold not seen in over a century of instrumental records. Such an event would amplify the background warming already driven by greenhouse gas emissions, likely pushing annual global mean temperatures past the current record set in 2024. Because El Niño shifts heat distribution across the atmosphere and oceans, its effects ripple through weather patterns worldwide—from altered monsoon timing to intensified drought or flooding in specific regions. The prediction underscores how natural variability and human-induced climate change can compound, making extreme years more probable as baseline temperatures rise.
If realized, a record El Niño could affect billions through disrupted agriculture, water supplies, and public health, as heatwaves and extreme weather become more frequent. Coastal communities and vulnerable economies may face heightened stress from sea-level rise and storm surges. The forecast could also influence policy discussions on adaptation and emissions reduction, though its precise societal toll will depend on regional resilience and preparedness.