海の日 is a public holiday in Japan. This page collects the date for each year, plus other holidays in the country's calendar.
海の日 is officially observed as a public holiday in Japan. We are building out a longer history & traditions section for this holiday. In the meantime, the calendar below shows 海の日's date across multiple years and how it interacts with the country's long-weekend opportunities.
海の日 observance varies by community and region within Japan. Government offices, banks, and schools are typically closed.
Future dates for moving holidays (Easter, Eid, Lunar New Year, Diwali, etc.) are computed and approximate; the actual public-holiday date in some countries is fixed by official decree closer to the date.