Earth experienced its third-warmest September since records began, according to new data from the European Union's Copernicus Climate Change Service (C3S). Land and ocean temperatures remained alarmingly high, with the global average surface temperature reaching 16.11°C – 1.47°C above pre-industrial levels.
Oceans and Ice: A Climate Warning
Sea surface temperatures hit 20.72°C globally, with the North Pacific recording unprecedented heat. Meanwhile, Arctic sea ice shrank to 12% below long-term averages, while Antarctic ice measured 5% below average – both critical indicators of accelerating climate disruption.
The El Niño Factor
While central and eastern Pacific waters showed neutral El Niño-Southern Oscillation conditions, C3S climate strategist Samantha Burgess warned: "Persistent greenhouse gas effects maintain dangerous temperature levels. September 2025 was barely 0.1°C cooler than 2024's record."
Asia's Climate Crossroads
As temperatures rise, China emerges as a renewable energy leader. A recent Ember analysis highlights the country's pivotal role in global coal reduction efforts through rapid green energy expansion – a crucial development for Asia's climate-vulnerable regions.
