Mountain Day

11 Aug 2027

1 day off

At a glance

1 day off

For shops

In 2027, Mountain Day falls on Wednesday 11 August, a one-day national holiday. It falls midweek, and mountain destinations may attract day visitors.

Day by day

  • 11 Aug:Mountain Day(Public holiday)

Sources


How these days are spent

Mountain Day encourages appreciation of Japan’s mountains and the natural environment. Hiking and outdoor activities may be popular, but conditions and access vary by region.
Date source: Cabinet Office, “国民の祝日”.

What it does to a shop

  • Weather matters most for mountain services: Demand for food, gear and activities can change with conditions.
  • Review access and supplies: Shops near trail routes should confirm deliveries and safety notices.
  • City demand varies: A midweek holiday may have a modest effect on ordinary neighbourhood services.
  • Visitor enquiries: Share your hours; suggest checking transport and attraction notices directly.
  • Check employment guidance: For private-sector days off, substitute holidays, staffing and pay arrangements, follow announcements from the Ministry of Health, Labour and Welfare.

What to do before it

  • 30 days before: Decide Wednesday hours and check weather, access and deliveries if serving mountain visitors.
  • 14 days before: Set each date’s special hours in Google Business Profile, including closed days. Publish a Post on the same day with the complete opening schedule.
  • 7 days before: Repeat the one-day schedule and confirm whether reserved outdoor services can proceed.
  • On the holiday: Verify that the posted hours still match actual operations. Check that the special hours will expire after their assigned dates rather than overwrite regular hours.

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Questions shop owners ask

How long is Mountain Day in 2027?

According to Japan’s Cabinet Office, Wednesday 11 August is a one-day holiday.

Is Mountain Day a long weekend in 2027?

No. Japan’s Cabinet Office designates Wednesday 11 August as the national holiday, not a multi-day weekend.