holidays

Sea Day

Sea Day (Umi no Hi) is a Japanese national holiday celebrated on the third Monday of July. It honors the ocean and its importance to Japan as an island nation.

About the Holiday

Sea Day was first observed in 1941 as Marine Day and became a national holiday in Japan in 2003. The holiday celebrates Japan’s relationship with the sea, which has been vital to its culture, economy, and survival throughout history. It is a day to express gratitude for the benefits of the sea and to consider its future.

Ways to Celebrate

Dates for 2027-2032

Year Date
2027 July 19
2028 July 17
2029 July 16
2030 July 15
2031 July 21
2032 July 19