Mountain Day

Mountain Day, known in Japan as Yama no Hi (山の日), is a national public holiday observed annually on August 11. It was established through an amendment to Japan’s national holiday law in 2014 and celebrated for the first time in 2016. The holiday was created to recognize Japan’s mountains and to provide citizens with an opportunity to appreciate the country’s natural landscapes and the benefits they provide, including forests, rivers, biodiversity, agriculture, and recreation. Japan’s mountainous terrain covers much of the archipelago and has long shaped regional economies, religious practices, folklore, and national identity.

The date of August 11 was selected after discussions involving national and regional mountain organizations, although it is not tied to one single ancient mountain festival. Mountain Day forms part of Japan’s modern calendar of themed public holidays, which promote social reflection as well as leisure. In 2026, Mountain Day will fall on Tuesday, August 11. Its position near the traditional Obon vacation period often makes it part of a longer summer travel season, when many people return to their hometowns, visit relatives, or explore rural and alpine areas.

Mountain Day does not yet have one nationwide ritual comparable to New Year celebrations or Obon customs. Instead, common observances include hiking, climbing, camping, nature walks, scenic rail journeys, and visits to national parks, lakes, highlands, and mountain villages. Municipalities, tourism groups, and outdoor organizations frequently arrange guided hikes, conservation activities, photography events, lectures, and programs introducing local mountain ecology and history. Some people use the holiday simply to spend time outdoors with family and friends or to reflect on the importance of protecting forests and watersheds.

Celebration styles and foods vary by region. Travelers may enjoy local mountain produce, wild vegetables, river fish, mushrooms, soba, regional rice dishes, and rustic hot-pot meals, while mountain resorts and communities often promote seasonal festivals and outdoor markets. Because the holiday is close to Obon, transportation and popular destinations can be busy, so advance planning is useful. There is no single universally required greeting, but people may say “Yama no Hi omedetō gozaimasu” (Happy Mountain Day) or offer seasonal wishes such as “Yoi natsu o” (Have a good summer).