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Usujiri Jinjamae

Type:
Scuba Diving
Entry:Unknown
Difficulty:Advanced
Tags:
Reef
About This Dive Spot

Usujiri Jinjamae is a year-round dive area in the town of Usushiri (Hakodate City, Hokkaido), noted for strong biodiversity and a well-balanced marine ecosystem. Water temperatures range from very cold winter lows around 2°C to summer highs around 21°C. Seasonal highlights include whitefish hatching in March and lingcod breeding from March through April, when egg masses can be observed. Planktonic life such as criones and “jellyfish riders” may also be encountered.

Planning details
Reported depth and seasonality.

Best season

March to April for spawning and hatching activity; summer for warmer water.

Typical conditions

Seasonal water temperature range from about 2°C up to about 21°C.

Safety & access
Hazards, restrictions, and required precautions.

Hazards

Cold water

Safety notes

Water temperatures can be extremely low at times; appropriate exposure protection and thermal planning are important.

Local intel
Community notes to help plan your visit.

Tailored notes for different activities.

Scuba

Suitable for diving year-round, with major seasonal temperature changes.

Dive Spot Log Averages
Average conditions based on logged dives & visits
No community dive data has been logged here yet. Be the first to record a dive and seed the averages.
Dive Conditions Planner
Current snapshot, today hourly conditions, and seven-day planning data.

Current snapshot

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Weekly trends

Marine rhythm
Surface outlook
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Frequently Asked Questions

What's the best entry point at Usujiri Jinjamae?
Entry at Usujiri Jinjamae is detailed in the spot description above. Look for specific landmarks, access paths, and any tide or condition requirements. Local divers often share updated entry tips in their dive logs.
What conditions are best for diving Usujiri Jinjamae?
Optimal conditions at Usujiri Jinjamae depend on several factors including tide, wind, and season. Check recent dive logs for current condition reports and patterns. Generally, calmer seas and high tide provide better visibility and easier entry.
What is the maximum depth and typical visibility at Usujiri Jinjamae?
Depth and visibility information for Usujiri Jinjamae can be found in the spot details and recent dive logs. Conditions can vary significantly based on weather, tide, and season. Always plan your dive according to current conditions and your certification level.
Are there any safety considerations or local etiquette at Usujiri Jinjamae?
When diving Usujiri Jinjamae, respect local regulations, marine life, and other water users. Be aware of any specific hazards like currents or boat traffic mentioned in the spot description. Follow Leave No Trace principles and local diving etiquette.