Why is the Sea of Okhotsk considered the coldest sea in East Asia?
The Sea of Okhotsk is considered the coldest sea in East Asia primarily due to the strong influence of the Asian continent on its northern, northeastern, and western regions.1
During the winter months, from October through April, these areas experience a continental climate characterized by very cold air temperatures and minimal precipitation. This thermal regime is so severe that it differs only slightly from conditions found in the Arctic. Consequently, these parts of the sea are constantly covered with ice during the winter. While the southern and southeastern portions of the sea benefit from a milder marine climate due to their proximity to the Pacific Ocean, the overall influence of the surrounding landmasses and cold air masses maintains the sea's status as the coldest in the region.1