Marine Day Description
Marine Day (海の日, Umi no Hi) on the third Monday of July (July 20, 2026) celebrates the ocean's bounty and Japan's identity as a maritime nation surrounded by the sea. The holiday was established in 1996, originally on July 20th, and moved to the third Monday of July in 2003 under the Happy Monday system. It commemorates the return of Emperor Meiji from a sea voyage to Hokkaido in 1876. Marine Day unofficially kicks off the summer leisure season. Beaches across Japan — from Okinawa's tropical shores to the Izu Peninsula near Tokyo — officially open for swimming around this weekend. Aquariums, maritime museums, and seaside parks run special events and offer discounted admissions. Many Japanese take day trips to the coast or plan weekend getaways to beach resorts. Government offices and schools close. Public transport to coastal destinations is notably busier than usual. Waterfront fireworks displays are held in some coastal cities. In 2026, the Monday placement creates a three-day weekend that is heavily used for the first summer beach trips and marine sports. Nagasaki, Yokohama, Kobe, and other port cities celebrate with special waterfront festivals and illuminations.
