Iriomote Island
Underwater, divers can expect to encounter a diverse array of fish species, including the magnificent manta rays for which Iriomote Island is particularly famous. The island's pelagic fish population, featuring dogtooth tuna, yellowfin reef sharks, and toothfish, adds to the allure for divers seeking unforgettable encounters beneath the waves. Moreover, the beauty of the coral reefs and the abundance of marine life contribute further to the island's appeal.
Diving centers on Iriomote Island are well-known for their unexplored coral gardens, rare fish sightings, and excellent macro photography opportunities. Manjushimodoki, Nishikiteguri, and reef fish are among the notable spots that attract divers of all levels, from beginners to advanced and expert divers. With a visibility of 19 meters and a maximum depth of 19 meters, the island provides ideal conditions for divers to explore its underwater wonders.
Immerse yourself in the enchanting world of Iriomote Island, where nature's beauty both above and below the water will leave you awe-inspired. Don't miss this extraordinary destination that promises an unforgettable diving experience along the breathtaking coastline of Japan.
Diving Conditions Score for Iriomote Island
Good diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Iriomote Island
Depth
19m
Visibility
19m
Experience Level
Weather Conditions for Iriomote Island
Wave Height
0.72m
Wind Speed
12.8 m/s
Water Temp
28.9°C
Visibility
13.28km
Cloud Cover
30%
Wave Period
4.85s
Air Temperature
26.7°C
Precipitation
0 mm
Dive Score Chart for Iriomote Island
Best time to dive: 17:00 with score 7.611000000000001/10. Water conditions: Waves 0.74m, Wind 13.2 m/s.Best night dive time: 23:00 with score 7.1932190476190465/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Iriomote 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: 7.6/10
Waves: 0.74m (4.7s), Wind: 13.2 m/s
Score: 7.2/10
Waves: 0.7m, Wind: 12.1 m/s
Seasonal Analysis for Iriomote IslandAlpha
Historical patterns and best seasons for diving at Iriomote 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 Iriomote Island
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Iriomote Island
Ideal Conditions for Iriomote Island
Water Temp
27.6°C / 81.7°F
June
Visibility
11.0m / 36.1ft
July
Wave Height
1.7m / 5.6ft
March
Wave Period
8.0s
January
Seasonal Insights for Iriomote Island
Iriomote Island shows typical northern hemisphere patterns with July being the warmest month (28.7°C) and January the coldest (15.2°C). The calmest conditions typically occur in March with average wave heights of 1.7m and wave periods of 8.0s. The most comfortable wave conditions are in March 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). March is usually the driest month with 1.1mm of precipitation. For beginners, the best time to visit would be during March to May, 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