How do temperatures differ between the northern and southern parts of the Sea of Okhotsk?

The Sea of Okhotsk exhibits significant temperature variations between its northern and southern regions due to the influence of the Asian continent in the north and the Pacific Ocean in the south.1

• Winter Temperatures: The northern and western regions experience a harsh continental climate, with average February air temperatures reaching -11 °F (-24 °C). In contrast, the southern and southeastern parts are moderated by the Pacific, resulting in a milder marine climate with average February temperatures of 19 °F (-7 °C).1
• Summer Temperatures: During August, the northern and western areas see average temperatures of 57 °F (14 °C), while the southern and southeastern regions are warmer, averaging 64 °F (18 °C).1
• Hydrological Influence: The southwestern part of the sea is relatively warmer due to the inflow of water from the Sea of Japan. Additionally, Pacific currents ensure that the eastern half of the sea remains warmer than the western half.1

While surface water temperatures rise to 46–54 °F (8–12 °C) in summer, the thickness of the underlying cold-water layer is significantly greater in the northwest (up to 525 feet) than in the southeast.1