Arctic Sea Ice Hits 2026 Minimum, Tying 10th‑Lowest Extent in Satellite Record

On September 12, 2026, the Arctic Ocean’s ice cover fell to an estimated 4. 6 million square kilometres, matching the 10th‑lowest minimum recorded by satellites since 1978. The figure ties 2008, 2010 and 2025 for the 10th‑lowest extent. Over the past two decades, every summer from 2007 to 2026 ranks among the 20 lowest minima in the record, though the most recent years have shown a modest plateau. The remaining ice is younger and thinner, with a marked loss of multiyear ice. Even the winter maximum in March 2026 is the lowest on record. Scientists attribute the trend to a combination of natural variability and rising global temperatures, and they warn that an ice‑free Arctic could occur before the middle of the 21st century. Satellite observations rely on passive microwave sensors that can see through clouds, drawing data from NASA, the National Snow and Ice Data Center, and Japan’s GCOM‑W satellite.