Confirmed datePublic HolidaySeasonal

Marine Day (Umi no Hi)

WhenJuly 20, 2026
WhereNationwide
ScopeAcross Japan
PriceFree / observed nationwide
people in red and black traditional dress standing on street during daytime2026-07Across Japan
Photo: enkuu smile / Unsplash

The shape of it

About

A national holiday giving thanks for the ocean's bounty and Japan's status as a maritime nation. Falling in mid-July, it anchors a three-day weekend that marks the unofficial start of the beach and summer-festival season.

Highlights

  • A mid-July long weekend that kicks off Japan's summer holiday mood
  • Beaches, aquariums and waterside events draw families
  • Coincides with the build-up to Tokyo's big summer firework displays

Plan it well

  1. Banks and offices close; beaches, parks and transport hubs are crowded for the long weekend.
  2. Expect higher accommodation prices and busy trains to coastal areas — book ahead.
  3. Great window for an aquarium or bayside outing as the city heats up.

Sources