dive-in-japan.com · Guide
Regional guide for Oyashirazu seasonality, visibility, and beach-point access.
Dive Spot Guide•
Oyashirazu
Oyashirazu shore dive with arches and macro life.
Local operator required
Local beach-condition judgment is the practical way to manage the shore entry.
Shore-entry cliffside dive in Niigata with rocky terrain, arches, and strong summer visibility; winter surf makes it seasonal.
About Oyashirazu
Oyashirazu is a shore-access cliffside dive on the Sea of Japan with large rocks, arches, and narrow crevices that make the terrain the main attraction. Summer visibility can be excellent, and the site is known for nudibranchs, shrimp, crabs, and seasonal schools of fish, making it a strong mix of macro and wide-angle diving. Plan around calm-weather windows because winter surf can turn the site into a much rougher shore entry.
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Research Estimate At Oyashirazu
Conservative baseline from public research. No community dives logged yet.
VisibilityVisibility: 22m
AccessModerate entry effort
Aquatic LifeGreat variety
FacilitiesBasic facilities
Crowd / PopularityFew visitors
CurrentLight current
SurgeModerate surge
Where Is Oyashirazu?
This spotNearby spotsExplore nearby spots on the map
Community sourced coordinates.
Oyashirazu Planning Details
Depth range, seasonality, and planning context.
Reported Depth
15m - 40m
Depth Note
Top around 15-18 m, with deeper relief dropping toward 35 m and beyond 40 m.
Best Season
June to September for visibility, with fall good for fish activity.
Typical Conditions
Clear summer water, rocky relief, and open-ocean exposure; winter brings rough surf.
Safety & Access At Oyashirazu
Site conditions, restrictions, and access requirements.
Site Conditions
Overhead environment
Safety Notes
Treat the arches and crevices like overhead features and avoid rough-season entries.
Access Restrictions
Winter waves are higher and more violent, so the site is best treated as seasonal.
Legal Notes
Use local guidance and avoid entering when sea conditions are poor.
Local Intel For Oyashirazu
Community notes to help plan your visit.
Scuba Diving
A terrain-first shore dive with arches, crevices, and macro life that rewards careful buoyancy.
Freediving
Possible only in calm conditions for experienced freedivers.
Snorkeling
Not a primary snorkel site; the open coast and seasonal surf favor scuba.
Wildlife at Oyashirazu
Species commonly reported at this site, with direct links into their wildlife guides.
Recent Logged Visits At Oyashirazu
Community dive logs and visit reports for this site.
Dive Spot Log Averages At Oyashirazu
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility22m
Activity
No dive activity logged yet.
