Archive · 1 Oct 2025
Antarctic Winter Sea Ice Hits Third-Lowest Level
The ice around Antarctica in the winter reached its third-lowest point ever recorded.
Scientists measure this ice every year, and the amount this year was very small.
The ice usually grows in the winter and melts in the summer.
However, the planet is getting warmer, which means the water near Antarctica is warmer too.
This warmer water stops the ice from growing as much.
Less ice means the ocean absorbs more heat and could speed up rising sea levels, but it also could lead to more snowfall, which might help slow sea level rise.
The effects will depend on how long the warmer temperatures last.
Antarctic winter sea ice reached its third-lowest peak in nearly half a century.
The ice peaked around September 17th at 17.81 million square kilometers.
The 2025 maximum is the third lowest in the 47-year record.
Warming oceans are mixing with water near Antarctica.
Less ice could lead to more ocean heat absorption and changes in snowfall.
- Who
- Researchers and the US National Snow and Ice Data Center
- What
- Antarctic sea ice hit its third-lowest peak in 47 years.
- When
- The ice peaked around September 17th.
- Where
- Antarctica
- Why
- Climate change is impacting the sea ice.
- Lowest Ice Peak
- Third-lowest in 47 years
- Peak Date
- September 17
- Peak Ice Area
- 17.81 million square kilometers (6.88 million square miles)
- Record Start
- 47 years ago
- Previous Record Lows
- 2023 and 2024