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Devil’s Palace

Located in the western part of Shimoji Island, Devil's Palace is a magnificent dive site accessible by a 30-minute boat ride from Miyako Island in Japan's Okinawa Prefecture. The site offers divers an unforgettable experience as they descend into a crevasse and access the entrance at a depth of approximately 15 meters. With a maximum depth of 24 meters, divers navigate through narrow, dark passageways and arches, immersing themselves in the fascinating underwater world.

Devil's Palace is a haven for a variety of marine creatures. From pinecone saucers, red scorpionfish, dandelionfish, and striped mantis shrimp that love to burrow, to the enchanting Japanese pygmy seahorses and fritillary shrimps, there is an abundance of marine life to discover in the vicinity. The lucky divers may even catch sight of graceful green turtles, white tip sharks, and majestic sea mantas.

This captivating dive adventure culminates in a grand hall, aptly earning its name, the "Demon King's Room." As divers reach the center of this underwater city, they bear witness to an awe-inspiring sight - a beam of blue light streaming through the ceiling, resembling a radiant spotlight. The atmospheric ambience of this breathtaking illumination changes throughout the day, enhancing the overall diving experience. To ensure visibility in the dark environment, it is essential for each diver to carry their own light. Moreover, divers should frequently monitor their residual pressure and dive computer as they spend more time exploring the waters at an average depth of 20 meters.

Explore Devil's Palace, an enchanting dive site in Japan, and immerse yourself in its captivating underwater wonders. Suitable for divers of all levels - beginners, advanced, and experts - this remarkable location promises an unforgettable and rewarding experience in the waters of Miyakojima, Okinawa Prefecture, Japan.

Diving Conditions Score for Devil’s Palace

6.5
Above Average

Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Devil’s Palace

Depth

24m

Visibility

20m

Experience Level

beginner
advanced
expert

Weather Conditions for Devil’s Palace

Wave Height

1.04m

Wind Speed

22.6 m/s

Water Temp

28.7°C

Visibility

4.24km

Cloud Cover

100%

Wave Period

5.8s

Air Temperature

28.2°C

Precipitation

1.6 mm

Detailed 7-Day Diving Forecast for Devil’s Palace
Alpha

Dive Score Chart for Devil’s Palace

Best time to dive: 15:00 with score 7.09/10. Water conditions: Waves 1.02m, Wind 22.8 m/s.Best night dive time: 20:00 with score 6.613933333333333/10.

Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.

Sunrise at Devil’s Palace: 06:00
Sunset at Devil’s Palace: 18:00

Optimal diving conditions at Devil’s Palace are affected by daylight hours. Sunrise occurs at 06:00 and sunset at 18:00, which impacts visibility and water temperature for scuba diving and snorkeling.

🌞
Best Overall
15:00

Score: 7.1/10
Waves: 1.02m (5.8s), Wind: 22.8 m/s

🌙
Best Night
20:00

Score: 6.6/10
Waves: 0.98m, Wind: 24.3 m/s

Seasonal Analysis for Devil’s Palace
Alpha

Historical patterns and best seasons for diving at Devil’s Palace

The dive score combines all factors to rate overall diving conditions throughout the year. Higher scores indicate better diving conditions.

Monthly Dive Score Analysis - Seasonal Diving Conditions

Higher values indicate better diving conditions

Seasonal DiveScore Chart

This chart displays monthly diveScore data throughout the year, showing seasonal patterns. The data is presented as a bar chart with an overlaid line graph.Dive scores range from 1 to 10, with 10 being optimal conditions.

Higher values indicate better diving conditions

Best Season for Devil’s Palace

Winter

Avg. Score: 8.4/10

Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.

Best Months for Devil’s Palace

January
Score: 8.5
November
Score: 8.4
December
Score: 8.4

Ideal Conditions for Devil’s Palace

Water Temp

Thermometer Emoji

27.7°C / 81.9°F

June

Visibility

Telescope Emoji

11.9m / 39.0ft

August

Wave Height

Wave Emoji

2.9m / 9.5ft

August

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Devil’s Palace

Devil’s Palace shows typical northern hemisphere patterns with July being the warmest month (29.1°C) and January the coldest (16.4°C). The calmest conditions typically occur in August with average wave heights of 2.9m and wave periods of 8.0s. The most comfortable wave conditions are in August with a low wave steepness ratio, creating gentler swells. January offers the longest wave periods (8.0s), creating more comfortable and predictable conditions for boat entries and exits. Ocean currents are slowest in January (0.5m/s) and strongest in January (0.5m/s). August is usually the driest month with 0.1mm of precipitation. For beginners, the best time to visit would be during August to October, when ocean conditions are calmer with long-period waves and currents are typically weaker. Experienced divers might enjoy the challenges and potentially better visibility during the shoulder seasons, with moderate currents that can improve marine life encounters.

Scoring Legend:
9-10 (Excellent)
7-8 (Good)
5-6 (Average)
3-4 (Poor)
1-2 (Dangerous)

Last updated: 1 min. ago - Jun 28, 2026

Note: This dive site is not a verified dive site. Please dive with caution. This dive site might have incorrect information by the community.

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