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Sea ice at both ends of the Earth, month by month, 2025

Arctic sea ice peaked in March at 14.1 million km² and shrank to 4.8 by September, the month the Antarctic's peaked at 17.6. The two together were largest in November.

What does this axis measure?
What does this axis measure?
Sea ice at both ends of the Earth, month by month, 2025: 12 points, a connected scatter chart.
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y ↑
Antarctic sea ice (million km²)
x →
Arctic sea ice (million km²)
Given
Month
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The data: 12 points
Arctic sea ice (million km²)Antarctic sea ice (million km²)Month
13.114.691
13.752.222
14.1233
13.836.174
12.499.275
10.412.116
7.6614.667
5.3916.58
4.7517.649
6.3216.9610
8.7714.5811
11.229.2212
Source
Fetterer, Knowles, Meier, Savoie, Windnagel and Stafford (2025), Sea Ice Index, Version 4 (G02135), National Snow and Ice Data Center; monthly extent, both hemispheres
Licence
No licence named; NSIDC asks for a citation as the condition of use
Read
2026-10-06
Drawn
12 points as the puzzle showed them · connected scatter
  • Ran in puzzle #20 on October 16, 2026. Play it