Alaska Climate Research Center

The Alaska State Climate Center
The Alaska State Climate Center
The Alaska State Climate Center

Arctic Sea Ice Extent: August 7, 2025

August 7, 2025: The Arctic sea ice has experienced a much lesser decrease rate for this week of 5.64% (last week’s decrease rate was 13.73%), from the level on 07/31/2025 of 6.209 M km2 to 5.859 M km2 for this week.  The sea ice extent for 2025 to date remains in 2nd place for the lowest sea ice extent for this time of year eclipsed only by the year 2019 when the lowest sea ice extent was at 5.392 M kmon 08/07/2019.

Plot Compiled by: Howard J. Diamond, PhD; Climate Science Program Manager at NOAA’s Air Resources Laboratory
Data Source: National Snow & Ice Data Center (NSIDC; https://nsidc.org/).

The negative sea ice anomaly this week was lower than the anomaly of -1.2482 M km2 on 07/31/2025 to a lesser negative anomaly of -1.1030 M km2 on 08/07/2025, and so less anomalously negative for this time of year.

Plot Compiled by: Howard J. Diamond, PhD; Climate Science Program Manager at NOAA’s Air Resources Laboratory
Data Source: National Snow & Ice Data Center (NSIDC; https://nsidc.org/).