Yonehara Reef
Diving into Yonehara Reef reveals a stunning display of coral life, including dense coverage of branch and table corals. The reef is teeming with a variety of marine species, such as the red-headed flounder and Debus damselfish, creating a vibrant and thriving ecosystem. Colorful butterflyfish gracefully swim around the reef, while the shelf invites divers to witness the abundance of damselfish in their natural habitat.
The visibility in Yonehara Reef is exceptional, reaching up to 24 meters, providing divers with a clear and immersive experience. The reef's open and bright environment, enhanced by the presence of white balas, offers an ideal setting for beginners to explore and appreciate the beauty of underwater life.
In addition to its natural allure, Yonehara Reef presents unique opportunities for divers, particularly during the early spring months when the courtship and spawning of gnats can be observed. This fascinating phenomenon adds an extra layer of awe-inspiring experiences to the dive.
Yonehara Reef is conveniently located near Ishigaki, Okinawa Prefecture, Japan, allowing divers to easily access this captivating site. Whether you are a beginner or an advanced diver, Yonehara Reef offers a memorable underwater adventure that showcases the richness and diversity of marine life in this region.
Diving Conditions Score for Yonehara Reef
Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Yonehara Reef
Depth
19m
Visibility
24m
Experience Level
Weather Conditions for Yonehara Reef
Wave Height
1.28m
Wind Speed
10.7 m/s
Water Temp
29.7°C
Visibility
9.04km
Cloud Cover
29%
Wave Period
8.9s
Air Temperature
29.2°C
Precipitation
0.2 mm
Dive Score Chart for Yonehara Reef
Best time to dive: 8:00 with score 6.725248210922787/10. Water conditions: Waves 1.28m, Wind 10.5 m/s.Best night dive time: 5:00 with score 6.357294382022472/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Yonehara Reef 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: 6.7/10
Waves: 1.28m (8.85s), Wind: 10.5 m/s
Score: 6.4/10
Waves: 1.24m, Wind: 12.2 m/s
Seasonal Analysis for Yonehara ReefAlpha
Historical patterns and best seasons for diving at Yonehara Reef
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 Yonehara Reef
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Yonehara Reef
Ideal Conditions for Yonehara Reef
Water Temp
27.7°C / 81.9°F
June
Visibility
11.3m / 37.1ft
July
Wave Height
2.0m / 6.6ft
November
Wave Period
8.0s
January
Seasonal Insights for Yonehara Reef
Yonehara Reef shows typical northern hemisphere patterns with July being the warmest month (29.1°C) and January the coldest (15.5°C). The calmest conditions typically occur in November with average wave heights of 2.0m 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). March is usually the driest month with 0.5mm 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 23, 2026