 The hills on the dale's left bank, which rise up towards the Herrmannsberg, a 536-metre-high hill to the west, reach heights of some 350 m above sea level within Oberweiler's limits.The municipal area measures 461 ha, of which 108 ha is wooded and roughly 10 ha is settled.Oberweiler im Tal borders in the north on the municipality of Hinzweiler, in the east on the municipality of Aschbach, in the south on the municipality of Eßweiler and in the west on the municipality of Horschbach.