Siberian High
Uglegorsk has a humid continental climate (Köppen "Dfb"). The weather on the western side of Sakhalin tends to be drier and more settled than on the eastern side, since the winds from the combined force of the Siberian High and Aleutian Low run almost parallel to the coast with very little travel over water. Moreover, the winds from the summer low tend to lose some of their moisture over the island's mountains.