Okinoshima Island
Diving enthusiasts visiting Okinoshima will have the opportunity to witness impressive sights. Large schools of sea squirts, hawks, and hawk eels gracefully swim by, while migratory fish like Hiramasa and kangpachi add to the diversity of marine life. The underwater landscape is adorned with vibrant soft corals, creating a mesmerizing display as red snapper and yellow snapper move in synchronized formations.
Thanks to the warm Tsushima Current, which positively influences the island, divers can enjoy crystal-clear waters with a remarkable visibility of 12 meters. In the summer, the water temperature rises to a comfortable 29 degrees Celsius, creating an ideal environment for marine life to flourish. Everywhere you turn, you'll find abundant schools of fish, offering a truly captivating experience.
As a diver, it's important to note that Okinoshima Island accommodates divers of all levels. From beginners to advanced enthusiasts, everyone can explore the wonders of this dive site. The maximum depth reaches 23 meters, providing ample opportunities to dive deeper and discover hidden treasures beneath the surface.
For those seeking additional adventures, Okinoshima's proximity to Munakata Taisha Okitsumiya in Fukuoka Prefecture opens up possibilities for land-based exploration. Immersing yourself in both the underwater wonders and cultural heritage of this region promises a truly enriching experience.
Explore Okinoshima Island's underwater paradise and create unforgettable memories as you dive into the remarkable depths of the sea.
Diving Conditions Score for Okinoshima Island
Average conditions, be alert.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Okinoshima Island
Depth
23m
Visibility
12m
Experience Level
Weather Conditions for Okinoshima Island
Wave Height
2.74m
Wind Speed
44.3 m/s
Water Temp
24°C
Visibility
4.18km
Cloud Cover
46%
Wave Period
6.65s
Air Temperature
24.1°C
Precipitation
2.9 mm
Dive Score Chart for Okinoshima Island
Best time to dive: 15:00 with score 5.213166666666667/10. Water conditions: Waves 2.32m, Wind 41.2 m/s.Best night dive time: 23:00 with score 5.3571333333333335/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Okinoshima Island 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.
Score: 5.4/10
Waves: 1.5m (5.9s), Wind: 27.6 m/s
Score: 5.2/10
Waves: 2.32m (6.15s), Wind: 41.2 m/s
Score: 5.2/10
Waves: 2.32m, Wind: 41.2 m/s
Seasonal Analysis for Okinoshima IslandAlpha
Historical patterns and best seasons for diving at Okinoshima Island
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 Okinoshima Island
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Okinoshima Island
Ideal Conditions for Okinoshima Island
Water Temp
26.8°C / 80.2°F
August
Visibility
12.0m / 39.4ft
May
Wave Height
2.4m / 7.9ft
November
Wave Period
8.0s
January
Seasonal Insights for Okinoshima Island
Okinoshima Island shows typical northern hemisphere patterns with August being the warmest month (26.8°C) and February the coldest (4.1°C). The calmest conditions typically occur in November with average wave heights of 2.4m and wave periods of 8.0s. The most comfortable wave conditions are in November 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). January is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during November to January, 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.
Last updated: 1 min. ago - Jun 20, 2026