Weinsberg lies in the eastern Heilbronn district in the northeast part of Baden-Wuerttemberg, between the Neckar in the west and the Löwenstein mountains in the east. The small river Sulm rises from the Löwenstein mountains and flows into the Neckar after approximately . The valley formed of the Sulm and its tributaries is called "Weinsberger Tal". The city mainly lies in and on the tendencies of the valley of the Stadtseebach (also called Saubach), a southern tributary of the Sulm. The Sulm flows by Weinsberg's area, but not by the city itself, and only a small northern part of the city lies at the edge of the Sulm valley.