Diving atJam, Kadena North (Japan)
Jam provides a straightforward dive profile, appealing to those seeking an accessible underwater experience in Okinawa. Depths here remain within recreational limits, typically reaching a maximum of 6 m (19 ft), making it particularly inviting for beginner divers. A small swim-through adds an element of exploration early in the dive, staying no deeper than 3.6 m (12 ft).
Tonight's objective overview for Jam, Kadena North shows an air temperature of 23.5°C. The measured surface conditions include wave heights around 1.4 m. This environmental data is logged for the close of the day.
Dive Site Location & Key Facts
Everything you need to know about this dive site.
Dive Site Overview
Divers can conveniently access Jam either directly from shore or via a short boat ride; parking is frequently available along the seawall, enhancing accessibility for day trips. The site presents an expansive reef structure, gradually transitioning into sections of sandy bottom, providing varied underwater scenery.
Its topography includes gentle walls and a small swim-through, which divers can explore early in their descent, typically remaining in shallower zones. These features facilitate clear navigation paths, making the area approachable for PADI Open Water certified divers. Shallower areas are particularly well-suited for night diving, where different marine behaviors become visible.
Many of the site's crevices and ledges offer concealment for nocturnal species, transforming the landscape after sunset. Visibility here varies widely.
Some periods see a more limited range, from 5 to 10 meters, while clearer conditions can offer up to 25 meters of visibility, often following stable weather patterns. Much of the site remains within typical recreational diving limits, generally below 20 meters, facilitating extended bottom times for exploration and photography.
Observing the interaction between reef fish and the coral formations offers continuous points of interest.
Jam, Kadena North
Conditions are Moderate
Best Dive Window
Optimal conditions expected
Current conditions near Jam, Kadena North show 24° air, 25° sea temperature, 1.2 m waves, and 33 km/h wind. Forecast data is refreshed regularly to ensure accuracy.
Best Time to Dive
Planning a dive at Jam involves considering seasonal variations in both weather and ocean conditions. The months of May through October generally provide good to excellent dive scores, with June, July, and September often presenting the most favorable circumstances. Air temperatures during this peak season are comfortable, ranging from 24°C (75°F) in May to highs of 29°C (84°F) in July, making surface intervals pleasant. Conversely, November to April typically sees moderate dive scores, with cooler air temperatures from 17°C (63°F) to 21.5°C (71°F). Rainfall is comparatively low from January to May, averaging 1.9 mm to 8.3 mm, then rising to its peak in June at around 9.7 mm. Water temperatures are at their warmest from July to September, hovering around 29°C (84°F), while December through March can see temperatures dip to 21.5°C (71°F), indicating a need for appropriate thermal protection during cooler periods.
PEAK SEASON SCORE
Scores combine air & water temps, waves, wind & rainfall for overall conditions.
BEST MONTHS TO DIVE
Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.
Dive Experience & Conditions
Current dynamics at Jam are typically manageable, often experienced within a range of 1 to 3 knots. During July, conditions can be quite calm, with currents sometimes registering 0 knots, though they can also reach 3 knots on occasion. From August through December, a consistent 1-knot current is frequently observed, contributing to a gentle drift. Water temperatures across the site fluctuate from a cooler 21.5°C (71°F) in the winter months up to a balmy 29°C (84°F) during the summer and early autumn. This variability influences thermal protection choices. Visibility is a notable aspect here; while often good, ranging from 10 to 25 meters, it can sometimes drop to a more limited 5 to 10 meters, depending on recent weather or tidal shifts. These conditions define an experience suitable for divers of various skill levels, especially those comfortable with minor currents.
Dive Difficulty & Safety Guidelines
While specific hazards are not consistently reported for Jam, all divers should adhere to fundamental safe diving practices. Always dive within your certification limits and maintain a diligent awareness of your surroundings. Utilizing the buddy system is crucial, ensuring mutual safety and support throughout the dive. Given the presence of currents ranging from 1 to 3 knots, divers should plan their entry and exit points carefully, particularly if conducting a shore dive. Keeping a surface marker buoy (SMB) deployed during safety stops and ascents is a standard precaution, enhancing visibility to surface traffic. Reviewing local dive conditions with a dive professional familiar with the site before entry is always recommended.
Recommended Equipment
- Dive Computer
This gear list is based on verified equipment signals for Jam, Kadena North, Japan. Always confirm final gear choices with your dive operator, guide, or liveaboard.
Recommended Dive Suit
Environmental conditions are expected to remain consistent in the short-term outlook.
For typical recreational dives, 3mm wetsuit generally provides comfortable insulation. Strong winds are present; please take strong precautions against rapid cooling during surface intervals.
Current dive conditions indicate that water temperatures around Jam, Kadena North are sitting at roughly 25°C (77°F). Surface air temperatures are resting at 24°C (75°F).
Due to technical issues with our weather providers, data hasn't been fetched for over 48 hours. The data above reflects the conditions at the time of the last successful fetch.
Emergency & Medical Support
Essential information to help you plan your dive trip to Jam, Kadena North.
Hyperbaric chambers are a critical part of dive safety infrastructure. Availability varies significantly by region, and not all dive areas have immediate access.
Before diving, it's recommended to:
- confirm nearest medical facilities
- check emergency procedures with local dive operators
- ensure dive insurance covers evacuation if required
Divers Alert Network
Diving emergency assistance available through DAN Japan.
+81338124999- 24/7 emergency hotline
- Diving medical assistance
- Evacuation coordination
Emergency contacts are provided for reference. Always verify local emergency services before diving.
Marine Life at Jam, Kadena North
Diving around Jam reveals a vibrant underwater landscape teeming with diverse marine life. Across the extensive reef and sandy bottom areas, divers frequently encounter Starfish and Lionfish. These inhabitants add rich color and interest to the rock formations and coral patches. Beyond these common sightings, the site hosts an array of other species. Observing various Corals, Fishes, Molluscs, Nudibranchs, and Octopuses is typical within the shallower sections of the reef. The overall ecosystem here provides ample photographic opportunities and a chance to witness natural behaviors.
Dive Sites Near Jam, Kadena North
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Dive Centers Near Jam, Kadena North
Working Hours
Today: 08:00 - 20:00
OKINAWA DIVING SERVICE Lagoon
Nearest Airports
Nearest airports to help plan travel to this dive area.
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Search Flights on ExpediaFrequently Asked Questions
Is Jam suitable for beginner divers?
Yes, Jam is considered a beginner-level dive site. Its maximum depth of 6 m (19 ft) and generally manageable conditions make it an excellent choice for newly certified divers or those looking for a relaxed experience.
What kind of entry options are available at Jam?
Divers can access Jam via either boat or shore entry. Parking is often available along the seawall, making shore dives a convenient option for many.
Are there any specific attractions to see at Jam?
The site features an expansive reef, areas of sandy bottom, and a small swim-through at a maximum depth of 3.6 m (12 ft). These elements contribute to varied underwater scenery.
What is the typical water temperature range?
Water temperatures at Jam vary seasonally, from around 21.5°C (71°F) in cooler months to up to 29°C (84°F) during the warmest periods. Divers should plan their wetsuit thickness accordingly.
Is night diving possible at Jam?
Yes, Jam is noted as a great place for night diving. Its shallower sections and diverse marine life offer a different perspective after sunset.
What marine life can I expect to see?
Common sightings include Starfish and Lionfish, alongside a variety of Corals, Fishes, Molluscs, Nudibranchs, and Octopuses. The site's diverse habitats support a good range of species.
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Jam, Kadena North
Conditions are Moderate
Best Dive Window
Optimal conditions expected
Current conditions near Jam, Kadena North show 24° air, 25° sea temperature, 1.2 m waves, and 33 km/h wind. Forecast data is refreshed regularly to ensure accuracy.