The Strongest El Niño Ever
Points and comments are a snapshot, not live.
Forecasts suggest the 2026-27 El Niño may be the strongest ever recorded, with a median peak of 3.6°C.
A multi-model ensemble of 667 members from 14 seasonal forecast models, initialized in July 2026, projects a median Niño 3.4 peak of 3.6°C, 0.8°C above the 2015-16 record of 2.75°C. About 91% of ensemble members exceed that record. The event is developing faster than the 1997-98 El Niño, and even the low end of the forecast range (2.8°C) grazes the all-time record. The RONI index, which removes the warming trend, also shows a record event in 11 of 14 models. Global temperature lags ENSO by 3-5 months, so 2027 is now shaping up to be the warmest year on record by a sizable margin. The author notes that models have never been verified in this territory.
What commenters are saying
Commenters are alarmed by the scale of the forecast, particularly the projection that most of the warming will arrive in 2027. Several users discuss practical preparations: solar energy, window air conditioning units, and heat pumps. One commenter clarifies that the 1.5°C target is a 20-year average, not a single-year anomaly, and warns against confusing the two. Another notes that model predictions before the spring persistence barrier correctly anticipated a historic El Niño, calling it an impressive out-of-sample prediction. A few commenters criticize European building design for being poorly suited to extreme heat, while others defend it as historically appropriate for a stable climate.