Uminokuchi

Departure data for this station is not available on this site.

Uminokuchi Station opened on 25 September 1929 with the inauguration of the JNR Ōito-South Line between Shinano-Ōmachi and Yanaba. When the section between Nakatsuchi and Kotaki was completed in 1957, the unified route was renamed the Ōito Line. Freight handling was discontinued in 1960 and parcel handling in 1964, when the station was made unstaffed. The station was inherited by JR East at the 1987 privatisation of Japanese National Railways. Service was interrupted by the 2014 Kamishiro fault earthquake on 22 November 2014 but was resumed on 25 November. The station joined the Tokyo metropolitan suburban zone on 14 March 2026, though IC card services remain unavailable here.

Despite a name that reads as "mouth of the sea", the station is well inland: it was named for its position at the "mouth of the lake", where the Nōgu River flows into Lake Kizaki. The lake itself was known in early modern times as Uminokuchi-ike. As at neighbouring Inao Station, Lake Kizaki can be seen straight ahead from the platform.