Earth's 'Leaking Hell': Scorching Heat Shatters Records in 2026

Global sea surface temperatures have once again reached their highest points, triggering concerns among scientists regarding the occurrence of extreme heatwaves this summer.

The Copernicus Climate Change Service reported on Monday, 1 July, that on 21 June, sea surface temperatures outside the polar regions exceeded the records set during the same period in 2023 and 2024. Copernicus warned that this temperature surge is likely to have consequences for weather patterns, the global climate, and marine ecosystems.

These conditions are also expected to occur alongside the early phase of the El Niño phenomenon, which is predicted to be one of the strongest in recent decades. When the sea temperature record was first set in June 2023, scientists described the trend as alarming, terrifying, and even irrational, as it far exceeded their projections. That record served as a precursor to El Niño, followed by global heatwaves, floods, and devastating storms.

Now, the sea temperature record established in 2023 has been surpassed once again. Several regions of the world are also experiencing alarming temperature spikes. Last month, the United Kingdom and many European nations recorded new heatwave records, while Antarctica experienced a much warmer winter than usual.

While public attention is generally focused on land temperatures, scientists believe ocean temperatures provide a more complete picture of the climate imbalance caused by human-induced global warming. Sea surface temperatures are influenced by solar radiation, ocean currents, and the accumulation of heat in deeper ocean layers.

The oceans absorb more than 90% of the excess energy in the Earth’s system, primarily generated by the burning of fossil fuels such as oil, coal, and gas. This energy imbalance reached a record 23 zettajoules last year, more than double the average of the previous two decades. Consequently, the rate of ocean warming continues to increase. In 2020, the heat entering the oceans was equivalent to the energy of approximately five Hiroshima bombs per second. That figure surged to nearly equivalent to 11 Hiroshima bomb explosions per second last year.

United Nations Secretary-General António Guterres previously warned that the Earth is being pushed beyond its limits. Nevertheless, scientists say it is still too early to confirm whether this warming of sea surface temperatures is merely temporary or will worsen, as annual temperature peaks typically occur between July and August.

Carlo Buontempo, Director of Copernicus at the European Centre for Medium-Range Weather Forecasts (ECMWF), stated that these conditions could mark the beginning of a new phase that brings the world into previously unexperienced territory. “With ocean temperatures at the levels seen currently and El Niño already on the horizon, we are very likely to see more temperature records broken in the coming months,” Buontempo said, as quoted by The Guardian on Friday (3/7/2026).

For information, Copernicus is part of the European Union’s space programme that monitors global climate and environmental conditions.