Miho bay is bounded to the west by Yumigahama Peninsula, which forms the western border with Shimane Prefecture.

[1] Miho Bay is generally defined as extending from the mouth of the Amida River in Daisen to the east and Cape Jizō at the tip of the Shimane Peninsula to the west.

[3] Miho Bay is faced by the coastal cities and towns of and Matsue, Shimane Prefecture, Sakaiminato and Yonago make up the Yumigahama Peninsula coastal area of Miho Bay, and the coast continues east to Hiezu and Daisen at the west of Tottori Prefecture.

In 1927, 4 nautical miles from Cape Jizō, the light cruiser Jintsuu and the Momi-class destroyer Warabi, both ships of the Imperial Japanese Navy, collided at the mouth of Miho Bay.

The Jintsuu was recommissioned during World War II and was sunk by US Navy cruisers during the Battle of Kolombangara on July 13th, 1943.