シベリア高気圧
In winter, Yuzhno-Kurilsk lies in a sharp transition zone between pulses of frigid air from the Siberian High centered over northeastern Russia during winter, and the much milder (but still chilly), wet and stormy Aleutian Low over the North Pacific Ocean to the east and northeast. In summer, clouds, fog and cooling influence from the Sea of Okhotsk and Oyashio Current predominate. Combined over the year, these features produce an exceptionally cold climate for a marine area for this near 44 degrees north-latitude location.