Isuzumi Reef
The dive site is located around a flat, sandy area with a protruding root. It features two buoys, one in shallow water and one in deeper water, making it accessible to both beginner and advanced divers. With minimal current and a relatively shallow depth of 16 meters, this dive site is perfect for divers of all levels. The highlight of the site is a large arch in the root, adorned with clusters of soft corals that provide a resting place for various marine creatures.
Diving at this site offers excellent visibility of up to 10 meters, allowing divers to fully appreciate the underwater beauty. In the shallower areas, divers can observe magnificent giant snappers and butterfly fish. During the summer to autumn months, these butterfly fish often gather in large schools, forming a mesmerizing spectacle. Exploring the tunnels, divers might encounter kelp and threadfin fish resting peacefully.
Located in Japan, this dive site is conveniently close to the 串本海中公園センターマリンパビリオン (Kushimoto Marine Park Center Pavilion) along National Highway Route 42 in Arida, Kushimoto, Higashimuro County, Wakayama Prefecture.
So whether you are a beginner or an experienced diver, don't miss the opportunity to explore this captivating underwater world.
Diving at this site offers excellent visibility of up to 10 meters, allowing divers to fully appreciate the underwater beauty. In the shallower areas, divers can observe magnificent giant snappers and butterfly fish. During the summer to autumn months, these butterfly fish often gather in large schools, forming a mesmerizing spectacle. Exploring the tunnels, divers might encounter kelp and threadfin fish resting peacefully.
Located in Japan, this dive site is conveniently close to the 串本海中公園センターマリンパビリオン (Kushimoto Marine Park Center Pavilion) along National Highway Route 42 in Arida, Kushimoto, Higashimuro County, Wakayama Prefecture.
So whether you are a beginner or an experienced diver, don't miss the opportunity to explore this captivating underwater world.
Diving Conditions Score for Isuzumi Reef
6.3
Above AverageDecent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Isuzumi Reef
Depth
16m
Visibility
10m
Experience Level
beginner
advanced
Weather Conditions for Isuzumi Reef
Wave Height
2.08m
Wind Speed
16.8 m/s
Water Temp
25.1°C
Visibility
2.4km
Cloud Cover
67%
Wave Period
5.9s
Air Temperature
24.3°C
Precipitation
0.5 mm
Detailed 7-Day Diving Forecast for Isuzumi Reef
Alpha
Dive Score Chart for Isuzumi Reef
Best time to dive: 9:00 with score 5.8812/10. Water conditions: Waves 1.2m, Wind 9.8 m/s.Best night dive time: 3:00 with score 6.648694479830148/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Isuzumi Reef: 06:00
Sunset at Isuzumi Reef: 18:00
Optimal diving conditions at Isuzumi 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.
Best Overall
3:00Score: 6.6/10
Waves: 0.8m (7.85s), Wind: 6.2 m/s
Safest Overall
9:00Score: 5.9/10
Waves: 1.2m (5.95s), Wind: 9.8 m/s
Best Day
9:00Score: 5.9/10
Waves: 1.2m, Wind: 9.8 m/s
Seasonal Analysis for Isuzumi ReefAlpha
Historical patterns and best seasons for diving at Isuzumi 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 Isuzumi Reef
Winter
Avg. Score: 8.7/10
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Isuzumi Reef
January
Score: 8.9
December
Score: 8.7
February
Score: 8.5
Ideal Conditions for Isuzumi Reef
Water Temp
26.5°C / 79.7°F
August
Visibility
14.4m / 47.2ft
November
Wave Height
1.2m / 3.9ft
January
Wave Period
8.0s
January
Seasonal Insights for Isuzumi Reef
Isuzumi Reef shows typical northern hemisphere patterns with August being the warmest month (26.5°C) and January the coldest (3.3°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
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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