• NOAA confirms strengthening El Niño, with 81% chance of very strong conditions in October–December 2026

    El Niño is present and strengthening across the central and eastern equatorial Pacific, the National Oceanic and Atmospheric Administration (NOAA) confirmed on August 3, 2027.Meanwhile its July strength outlook gives an 81% chance of very strong conditions during October–December 2026. WMO’s August–October 2026 outlook also shows associated shifts in seasonal temperature and rainfall probabilities across multiple regions.NOAA maintains an El Niño Advisory.

  • Rare Atlantic Niña develops as strengthening El Niño points to quieter 2026 Atlantic hurricane season

    A rare Atlantic Niña has developed across the equatorial Atlantic while El Niño continues strengthening in the tropical Pacific. Although Atlantic Niña events are relatively uncommon, forecasters say the developing pattern could reinforce atmospheric conditions that typically suppress tropical cyclone formation across the Atlantic basin.

  • Strengthening El Niño and Atlantic cold anomaly in focus for Winter 2026–27 outlook

    A strengthening El Niño and a persistent cool sea-surface-temperature anomaly in the subpolar North Atlantic, associated with the feature known in climate research as the North Atlantic warming hole, may influence large-scale atmospheric circulation during early Winter 2026–27 across North America and Europe, according to seasonal forecast guidance from major international forecasting centers.

  • Peru declares state of emergency ahead of 2026–2027 El Niño rains

    Peru has declared a 60-day state of emergency in 796 districts across 22 departments and the Constitutional Province of Callao on July 2, 2026, because of the imminent threat of intense rainfall associated with the 2026–2027 El Niño phenomenon, activating nationwide preparedness and disaster risk reduction measures.

  • El Niño develops, NOAA estimates 63% chance of a very strong event in 2026–27 winter

    El Niño conditions have developed in the tropical Pacific Ocean and are expected to strengthen through the Northern Hemisphere winter of 2026-27, according to the National Oceanic and Atmospheric Administration (NOAA). The Climate Prediction Center (CPC) issued an El Niño Advisory on June 11, 2026, after oceanic and atmospheric conditions shifted into an El Niño pattern.

  • El Niño forecast in 2026 as La Niña weakens and Pacific subsurface heat increases

    La Niña conditions persisted across the equatorial Pacific Ocean during February 2026, but forecasters expect the pattern to transition to ENSO-neutral within the next month. The Climate Prediction Center said on March 12, 2026, that El Niño is likely to emerge during June–August 2026 with a probability of 62% and could persist through at least the end of the year.