The 2026 Atlantic hurricane season is expected to be less active than previously anticipated, according to revised forecasts from Colorado State University (CSU). The update, released on July 8, 2026, cites the growing influence of a Super El Niño as the primary reason for the adjustment.
CSU, a pioneer in seasonal Atlantic hurricane forecasts since 1984, now predicts only nine named stormsfour hurricanes and one major hurricane (Category 3 or stronger) for the season. This is a significant decrease from their June forecast of 11 named storms, five hurricanes, and two major hurricanes. The updated outlook aligns with the National Oceanic and Atmospheric Administration’s (NOAA) seasonal forecast and includes Tropical Storm Arthur, the sole named storm to form in the Atlantic so far.
Understanding the Impact of El Niño
The El Niño-Southern Oscillation (ENSO) is a climate cycle characterized by natural temperature changes in the central Pacific Ocean. El Niño, one of the three phases of ENSO, describes warmer-than-average water across the equatorial Pacific. This phenomenon alters atmospheric circulation and can significantly influence global weather patterns.
During El Niño events, above-average water temperatures in the central and eastern Pacific Ocean modify the position and strength of the subtropical jet stream. This jet stream, a belt of very fast winds high in the atmosphere, extends into the Caribbean and Atlantic Ocean. The strong winds associated with El Niño hinder tropical development in the Atlantic, as hurricanes thrive in calm conditions.
The Role of Super El Niño
A Super El Niño occurs when water temperatures in the El Niño zone reach at least 2 degrees Celsius above average for at least three consecutive months. These events are less common but have a profound impact on the Atlantic hurricane season and other weather patterns worldwide.
CSU reports that a moderate El Niño is already present and is very likely to reach a strong El Niño (greater than 1.5°C) by the peak of the Atlantic hurricane season, from mid-August through mid-October. The stronger the El Niño event, the more wind will be present to limit storm development. However, other factors, such as water temperatures in the tropical Atlantic, also play a crucial role.
Current Atlantic Sea Surface Temperatures
Generally, water temperatures need to be above 80 degrees Fahrenheit to sustain tropical development. As of now, the tropical Atlantic is close to average or just below average for this time of the year. This means the basin is not receiving the extra boost from warmer waters compared to previous seasons.
According to CSU, the probability of a major hurricane making landfall anywhere along the U.S. coastline this year has dropped to 17%, down from 24% in June and well below the historical average of 43% from 1880 to 2026. The university will issue a mid-season forecast in August.
Potential Impacts on the Gulf Coast
The updated forecast has also lowered the chances of a hurricane hitting the Gulf Coast—from Brownsville, Texas, to the Florida Panhandle. In June, the forecast had a 20% chance of a hurricane making landfall in the region. The updated forecast now calls for a 10% chance.
Despite the reduced forecast, both CSU forecasters and weather experts caution that even in seasons with fewer storms, it only takes one to create major impacts. Tropical Storm Arthur, which impacted the Texas coast in June, demonstrated that significant effects can occur without a hurricane.
As the 2026 Atlantic hurricane season progresses, the strengthening El Niño will continue to play a crucial role in shaping weather patterns and storm development. Residents in hurricane-prone areas are advised to remain vigilant and prepared, regardless of seasonal forecasts.
