Ōsaka Bay

bay, Japan

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July 1, 2026

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Osaka Bay is a bay located in Japan, bordering the urban prefecture of Osaka on Honshu island. It is part of the larger Osaka-Kobe metropolitan area, which is the second-largest urban and industrial agglomeration in Japan.123

The bay is situated at the eastern end of the Inland Sea and is fed by the Yodo River delta. The metropolitan area surrounding Osaka Bay is a significant industrial hub, known for manufacturing iron and steel products, textiles, chemicals, and electrical machinery. The region experiences a temperate climate with hot, humid summers and cool winters, and is susceptible to typhoons in September.312

The Osaka-Kobe metropolitan area is a major center for commerce and transportation, with extensive railway networks and expressways connecting the cities. Osaka also boasts Kansai International Airport, built on a man-made island in Osaka Bay.23

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Ōsaka-Kōbe metropolitan area
The city site
The southwestern boundary of Ōsaka Bay is formed by Awaji Island. On the northwestern shore of the bay is Kōbe, above which rises the granite peak of Mount Rokkō (3,058 feet). The region is geologically unstable. Although earthquakes occur only infrequently, they can be highly destructive; notable severe quakes…
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The southwestern boundary of Ōsaka Bay is formed by Awaji Island. On the northwestern shore of the bay is Kōbe, above which rises the granite peak of Mount Rokkō (3,058 feet). The region is geologically unstable. Although earthquakes occur only infrequently, they can be highly destructive; notable severe quakes…
Read More