Sea Ice Prediction Network

The abbreviated 2025 July Sea Ice Outlook (SIO) Report is now available online. This report has been developed by SIPN team members from 22 contributions of September pan-Arctic sea-ice extent forecasts submitted in July 2025, based on May and June 2025 data.

The abbreviated 2025 June Sea Ice Outlook (SIO) Report is now available online. This report has been developed by SIPN team members from 27 contributions of September pan-Arctic sea-ice extent forecasts submitted in June 2025, based on May 2025 data.

The Sea Ice Prediction Network (SIPN) invites you to contribute to the August 2025 Sea Ice Outlook (SIO)—a collaborative, community-driven effort to compare and improve seasonal sea ice forecasts.

AUGUST DEADLINE FOR SUBMISSIONS
6:00 p.m. (AKDT) Monday, 18 August 2025
(based on May, June, and July data)

The 2024 Sea Ice Outlook (SIO) Post-Season Report is now available online. This report, developed by Sea Ice Prediction Network (SIPN) team members with contributions from the research community, provides discussion of factors driving sea-ice extent during the 2024 melt season and performance of contributed forecasts.

The 2024 August Sea Ice Outlook (SIO) Report is now available online. This report has been developed by SIPN team members from 24 contributions of September pan-Arctic sea-ice extent forecasts submitted in July 2024, based on May and June data.

The 2024 July Sea Ice Outlook (SIO) Report is now available online. This report has been developed by SIPN team members from 22 contributions of September pan-Arctic sea-ice extent forecasts submitted in June 2024, based on May data.