The problem with that claim is that the summer is not over. Checking the same graph now: http://ocean.dmi.dk/arctic/meant80n.uk.php shows me that it is above freezing again. Checking the ice: http://ocean.dmi.dk/arctic/meant80n.uk.php shows that it is about middle of the pack for the 2000's Call it average. See all the ice charts including the 1.2 million sq km above normal ice in the Antarctic at the WUWT sea ice page
It is in the high Arctic.