The year 2019 saw an early melt onset and high sea surface temperatures during summer in the Beaufort and Chukchi Seas. The September minimum extent ended up tied with 2007 and 2016 for second lowest in the satellite record. Autumn freeze up was slow. In December, the Chukchi Sea finally completely refroze, Hudson Bay iced over, and sea ice extended south into the Bering Sea. The year 2019 still ended up with low extent in the Bering Sea. Taking a longer view, the defining feature of the decade of the 2010s was consistently low Arctic sea ice extent compared to long-term averages.