The Osaka Bay Area is a metropolitan region in western Japan that includes the cities of Osaka, Kobe, and Kyoto. The area is well known for its nightlife, culture, and cuisine. When to Visit The best time to visit the Osaka Bay Area is during the spring or fall when the weather is mild. The summer can be quite hot and humid, while the winter can be cold and snowy. How to Get There The Osaka Bay Area is serviced by two airports: Kansai International Airport and Osaka International Airport. There are also a number of train and bus stations throughout the region.