The 15th Kobe Love Port (Minato Matsuri) is an annual festival held on Dainitotte (the 2nd Pier) east of Meriken Park close to the Port Terminal station on the Portliner. The festival celebrates Marine Day, express gratitude for the blessings of the ocean, and hope for prosperity in the coming year. This festival has a distinct nautical theme, but in most other ways you will it a standard Japanese festival featuring delicous food and entertainment. Each year is different, but the festival hosts a dedicated stage where a wide variety of acts from taiko drum displays to bands and “talents” are invited to perform.
You can get there via a free shuttle bus between Sannomiya, Motomachi, and Kobe stations on the JR line and the festival, but the nearest station is actually Port Terminal Station on the Portliner. If you are highly motivated, getting to the festival takes 20 minutes on foot from Sannomiya.