Ninohe is located in far north-center Iwate Prefecture, bordered by Aomori Prefecture to the north. The northern end of the Kitakami Mountains, the 852.2 meter Mount Oritsume is in Ninohe. Approximately 70% of the city area is mountainous and forested. The upper reaches of the Mabechi River flows through the city. A portion of the city is within the borders of the Oritsume Basenkyō Prefectural Natural Park.
Neighboring municipalities
Aomori Prefecture
Nanbu
Sannohe
Takko
Iwate Prefecture
Hachimantai
Kunohe
Karumai
Ichinohe
Climate
Ninohe has a humid continental climate characterized by mild summers and cold winters with heavy snowfall. The average annual temperature in Ninohe is 9.7 °C. The average annual rainfall is 1248 mm with September as the wettest month and February as the driest month. The temperatures are highest on average in August, at around 23.0 °C, and lowest in January, at around -2.4 °C.
Demographics
Per Japanese census data, the population of Ninohe peaked around the year 1960 and has steadily declined over the past 60 years.
History
The area of present-day Ninohe was part of ancient Mutsu Province, and has been settled since at least the Jōmon period. Many Jōmon and Kofun period remains have been found. Inhabited by the Emishi tribes, the Nihon Shoki describes the penetration of the area by forces of the Yamato dynasty in the late Nara period; however, it was not under effective control of the central government until the mid-Heian period. The area was dominated by the Nanbu clan from the early Muromachi period, and was named for one of the nine numbered stockades, or fortified ranches, that established to secure this frontier area. During the Edo period, the area was under the control of Morioka Domain. In the early Meiji period, the town of Fukuoka and the villages of Jōbōji, Kindaichi, Gohenchi, Tomai, Ishikiridokoro, and Nisattai were established within Ninohe District on April 1, 1889 with the establishment of the modern municipalities system. Jōbōji was elevated to town status on December 25, 1940. Gohenchi, Tomai, Ishikiridokoro, and Nisattai merged with Fukuoka on March 10, 1955. The modern city was founded on April 1, 1972, with the merger of the town of Fukuoka with the village of Kindaichi. On January 1, 2006, the city of Ninohe annexed the town of Jōbōji.