Trend Global warming accelerating since about 2015

Summary

Recent research finds that global warming has sped up markedly since around 2015. Over 2016 to 2025, global temperature rose by about 0.30°C per decade, nearly 60 percent faster than the 0.19°C average for 1980 to 2020. Earth's energy imbalance has more than doubled compared with 1976 to 1995, and marine heatwave days have more than tripled since 1991. In 2025 the largest coral bleaching event on record exposed 84.4 percent of the world's reef area to bleaching-level heat stress. The report argues that this acceleration pulls the planet away from Holocene-like conditions faster and shrinks the time people and nature have to adapt. It also makes returning from a temperature overshoot more urgent and raises the likelihood of record extremes and cascading impacts.