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).
At Jam, Kadena North, the ambient air temperature is currently recorded at 21.4°C. This dive site in Japan is operating under normal seasonal weather patterns. Familiarize yourself with the local topography prior to navigating.
Dive Site Coordinates
26.3557, 127.7406
Dive Site Characteristics
Key Dive Site Facts
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.
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 23.8°C (75°F) in May to highs of 28.9°C (84°F) in July, making surface intervals pleasant. Conversely, November to April typically sees moderate dive scores, with cooler air temperatures from 16.9°C (62°F) to 21.7°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 21.6°C (71°F), indicating a need for appropriate thermal protection during cooler periods.
Climate Historical Averages
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 21.6°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
No verified equipment items yet.
Verified equipment recommendations for this dive site are being reviewed and may be added as additional source checks are completed.
Recommended Dive Suit
Because recent water temperature readings are not available for Jam, Kadena North, the guidance below is based mainly on current air conditions and seasonal expectations. Current surface air temperatures are roughly 21°C (71°F).
Longer-range forecasts show some uncertainty in upcoming temperature trends.
Based on regional estimates and current weather, the likely required exposure protection is a 3-5mm wetsuit. Note that local currents and upwellings can alter this. Surface intervals may feel cooler. Many experienced divers adjust their exposure protection depending on the type of dive planned.
Conditions last reviewed: 18:00 using the latest environmental data.
Dive Logistics & Preparation
Hyperbaric Chamber
Check local Japan medical facilities.
Entry Requirements
View Japan Visa Hub
Currency
JPY
Nearest Airports
Nearest airports to help plan travel to this dive area.
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
View all dive sites in JapanDiscover more underwater gems in this area.
Dive Centers Near Jam, Kadena North
No Dive Centers Local To Jam, Kadena North
Are you a dive center visiting this location? Get listed to reach divers.
Frequently 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 21.6°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.
Liveaboards Sailing to Jam, Kadena North
Explore highly rated liveaboards visiting this dive site and discover the best routes in Japan.
Resorts & Accommodation
Find partner hotels and dive resorts directly accessing the reef.
Around This Area
Explore top-rated restaurants, activities, and attractions near Jam, Kadena North reviewed by travelers.
Planning to dive Jam, Kadena North?
Send one inquiry and receive offers directly from the best verified local dive operators.