Severobaikalsk is located on a plateau at the northern end of Lake Baikal at the mouth of the Tyya River. To the west the town is surrounded by the Baikal Mountains, to the northeast by the Stanovoy Range.
Severobaikalsk's location is described as being on a plateau at the northern end of Lake Baikal, where it meets the Tyya River. It is surrounded by the Baikal Mountains to the west and the Stanovoy Range to the northeast.