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.
Scuba DivingShoreIntermediate
Reef
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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 spots
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
Hazards, restrictions, and access requirements.
Key Hazards
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.
Oyashirazu Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Oyashirazu.
Current Snapshot
No data
🌥️Variable
Sunrise
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Sunset
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Surface / Entry
Wind No data · Tide No data
Sea State
Swell No data · Period unavailable
Visibility Outlook
Rain chance No data
Wind
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Swell
No data
Exposure Profile at Oyashirazu
Directional shelter context for incoming swell.
Exposure Note
Hourly forecast data is not available yet.
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.
No Dive Logs Yet
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Dive Spot Log Averages At Oyashirazu
Average conditions based on logged dives & visits.
Conditions
Avg. Visibility22m
Activity
No dive activity logged yet.
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Oyashirazu Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Oyashirazu Guide - Sources and Updates
Last Updated
Research Sources
en.seaslug.world · Wildlife
Macro-life observation from Oyashirazu Beach supporting nudibranch presence.
japantravel.navitime.com · Access
Beach access and parking details near Oyashirazu Beach.
www.japan.travel · Tourism
Official tourism guide for Oyashirazu seasonality and winter-wave conditions.
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