Bad Sobernheim lies on the middle Nahe about halfway between the district seat of Bad Kreuznach (roughly 20 km southwest of that town) and the gemstone town of Idar-Oberstein. Looming to the north is the Hunsrück, and to the south, the North Palatine Uplands. The municipal area stretches as far as the Soonwald.
Bad Sobernheim is situated on the middle Nahe river, about halfway between Bad Kreuznach and Idar-Oberstein.  The town is bordered by the Hunsrück mountains to the north and the North Palatine Uplands to the south. The municipality extends as far as the Soonwald forest.