El Niño Triggers an Unusually Late Start to the Atlantic Hurricane Season

By mid‑September 2026 the Atlantic basin still hasn’t produced a single hurricane. Five named tropical storms have rattled the waters, but each fizzled before ever reaching hurricane strength. That makes this season the latest‑starting Atlantic hurricane campaign on record – the first time a hurricane has waited until after Sept. 11 to appear since 2002 and 2013.

NOAA’s climatologists say the sluggish start isn’t a fluke. A very strong El Niño has taken hold over the Pacific, raising sea‑surface temperatures by roughly 2 °C – the threshold for a “strong” event. El Niño’s hallmark is to crank up wind shear across the Atlantic, essentially blowing storms apart before they can mature. At the same time, that same oceanic heater is super‑charging the eastern Pacific, where storms are blooming.

Historically, the Atlantic’s peak comes around Sept. 10. By the 16th, the average season has already birthed four hurricanes, and by the 19th two of those are usually major (Category 3 or higher). This year we’re far from that norm. NOAA’s latest outlook gives the basin a 75 % chance of below‑normal activity, forecasting only seven to 13 named storms, with just two to six becoming hurricanes and at most two reaching major status. In contrast, the Pacific is expected to see 15‑22 named storms, already counting fourteen, four of them hurricanes, and two major hurricanes (Genevieve and Karina) plus the Category 5 Lowell that punched through the central Pacific.

Why does El Niño have such opposite effects? When warm water piles up in the central‑eastern Pacific, it reshapes atmospheric circulation. The resulting upper‑level jet streams increase vertical wind shear over the Atlantic – a hostile environment for tropical cyclones – while simultaneously lowering shear in the Pacific, giving storms there a freer run.

For the Atlantic, the outlook remains sobering. The season, which runs June 1 to Nov. 30, typically yields about 14 named storms, seven hurricanes and three major hurricanes on average. This year’s tally is already lagging far behind those norms. Yet forecasters caution against complacency; a sudden shift in the El Niño pattern could still allow a late‑season burst.

Meanwhile, the Pacific’s active streak is a reminder of how interconnected our climate system truly is. The same warm‑water anomaly that’s stifling Atlantic storms is powering a parade of powerful cyclones across the other side of the world. Residents of coastal California, Mexico, and the islands of the central Pacific would do well to keep an eye on the evolving forecasts.

In short, a strong El Niño is rewriting the script for 2026: a record‑late Atlantic hurricane season on the decline, and a Pacific season that’s anything but quiet.