Shimamawari
Divers will be thrilled to encounter stunning drop-offs in all four cardinal directions: east, west, north, and south. On the west side, a hidden gem awaits in the form of a small cave, accompanied by a remote root. While the current may occasionally pick up pace, it remains manageable and suitable for divers of various experience levels.
Atop the roots, a vibrant tapestry of corals and anemones welcomes divers into a world of vibrant colors and marine life. Marvel at the remarkable sight of migratory fish, including the impressive amberjack and yellowtails, making their way through these waters. Throughout the year, the presence of hawksbill turtles and abundant whitebait adds to the excitement of each dive.
The site boasts excellent visibility of up to 12m, allowing divers to indulge in panoramic views of the underwater landscape. With a maximum depth of 20m, advanced divers will find plenty of intriguing features to explore and photograph. Located in Kushimoto, Higashimuro County, Wakayama Prefecture, Japan, this dive site promises an extraordinary adventure for divers seeking unforgettable marine encounters.
Prepare to be captivated by the dynamic beauty of the submerged Ayers Rock-like structure and its surroundings. Dive into the crystal-clear waters teeming with tropical marine life, from schools of snapper and white snapper to vibrant clownfish and delicate soft corals. Don't miss the chance to observe the enchanting migratory fish as they gracefully navigate their way through these underwater realms.
Experience the wonders of this exceptional dive site, offering an optimized and memorable underwater exploration experience tailored to the needs of advanced divers.
Diving Conditions Score for Shimamawari
Very good diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Shimamawari
Depth
20m
Visibility
12m
Experience Level
Weather Conditions for Shimamawari
Wave Height
0.94m
Wind Speed
1.4 m/s
Water Temp
25.3°C
Visibility
4km
Cloud Cover
48%
Wave Period
7.45s
Air Temperature
24.4°C
Precipitation
1.2 mm
Dive Score Chart for Shimamawari
Best time to dive: 8:00 with score 6.985/10. Water conditions: Waves 1.34m, Wind 5.8 m/s.Best night dive time: 3:00 with score 7.300140096618357/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Shimamawari 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: 7.3/10
Waves: 0.98m (6.9s), Wind: 2.3 m/s
Score: 7.0/10
Waves: 1.34m (6s), Wind: 5.8 m/s
Score: 7.0/10
Waves: 1.34m, Wind: 5.8 m/s
Seasonal Analysis for ShimamawariAlpha
Historical patterns and best seasons for diving at Shimamawari
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 Shimamawari
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Shimamawari
Ideal Conditions for Shimamawari
Water Temp
26.8°C / 80.2°F
August
Visibility
14.4m / 47.2ft
November
Wave Height
1.2m / 3.9ft
January
Wave Period
8.0s
January
Seasonal Insights for Shimamawari
Shimamawari shows typical northern hemisphere patterns with August being the warmest month (26.8°C) and January the coldest (3.5°C). The calmest conditions typically occur in January with average wave heights of 1.2m and wave periods of 8.0s. The most comfortable wave conditions are in January 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 January to March, 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