As of 31 January 2023[update], the city had an estimatedpopulation of 129,314 in 64055 households and apopulation density of 450 people per km².[1] The total area of the city is 285.11 square kilometers (110.08 sq mi).
Onomichi is located in southeastern Hiroshima Prefecture. It faces theSeto Inland Sea to the south, and the coastline is intricate and forms part of theSetonaikai National Park. The main urban concentration is in a narrow band on the coast, where there is very little flat land. Because of its unique scenery, it is often used as a filming location for movies.
Onomichi has ahumid subtropical climate (Köppen climate classificationCfa) characterized by cool to mild winters and hot, humid summers. The average annual temperature in Onomichi is 15.9 °C (60.6 °F). The average annual rainfall is 1,138.4 mm (44.82 in) with July as the wettest month. The temperatures are highest on average in August, at around 27.5 °C (81.5 °F), and lowest in January, at around 5.7 °C (42.3 °F).[2] The highest temperature ever recorded in Onomichi was 37.8 °C (100.0 °F) on August 15, 2024; the coldest temperature ever recorded was −6.3 °C (20.7 °F) on 26 February 1981.[3]
Climate data forIkuchi-jima, Onomichi (1991−2020 normals, extremes 1979−present)
1168: The city's port opened and for the next 500 years served as a rice shipment center and port for all trades with foreign countries. Its commercial significance somewhat wavered during theTokugawa period.
Onomichi has amayor-council form of government with a directly elected mayor and aunicameral city council of 26 members. Onomichi contributes three members to the Hiroshima Prefectural Assembly. In terms of national politics, Onomichi is part of the Hiroshima 5th district of thelower house of theDiet of Japan.[5] Prior to 2022, part of the city was in Hiroshima 6th district.
Onomichi has prospered as a port town and a commercial city. Before World War II, it had an economy comparable to that of Hiroshima City. Shipyards have existed in Onomichi, Mukaishima, and Innoshima for a long time due to their location, which is blessed with water transport. In recent years, the shipbuilding industry has been in decline.
Onomichi features 24 public elementary schools, 16 public junior high schools, and one public high school operated by the City Government. Additionally, six public high schools fall under the administration of the Hiroshima Prefectural Board of Education. The city also hosts one private middle school and one private high school, contributing to a diverse educational landscape. Moreover, the prefecture operates two special education schools for individuals with disabilities. It is also the location ofOnomichi City University, amunicipal university.
The city is known for its many temples such as theBuddhistSenkō-ji Temple (founded in the 9th century), has a shipbuilding yard and a motor factory. It offers a steamship service to ports of northernShikoku and islands in the Inland Sea.[9]