Sumisaki
Discover one of the most popular dive sites in Kushimoto, Japan. With a maximum depth of 27m and excellent visibility of 9m, this site is ideal for divers of all levels, from beginners to experts. The highlight of this site is a magnificent root structure located beneath the anchor, reaching a height of approximately 12m. As you venture further north, the depth increases, providing a diverse underwater landscape to explore.
One of the unique features of this site is the presence of scattered remote roots, offering opportunities for encounters with various marine species. Head to the northeast to observe captivating creatures such as kudagombe, glass goby, and deep sea bannerfish. In the western part, you'll find a vibrant cleaning station where astragalus and bannerfish engage in their intricate cleaning rituals. Depending on the season, keep an eye out for intriguing species like frogfish and nudibranchs around the roots.
The absence of strong currents ensures a tranquil diving experience, allowing you to fully immerse yourself in the underwater beauty of this site. If you're seeking a relaxing fish-watching and photo-dive excursion, visit the renowned Azahata Root located in the southern part of Kushimoto. Considered one of the best points in the area, this must-visit spot guarantees memorable moments for divers of all skill levels.
Explore this remarkable dive site along the 潮岬周遊線 in Kushimoto, Higashimuro County, Wakayama Prefecture, Japan. Embark on an unforgettable underwater adventure that combines captivating marine life with stunning root formations. With its optimized conditions for divers and a picturesque location, this dive site in Japan is a true underwater paradise.
One of the unique features of this site is the presence of scattered remote roots, offering opportunities for encounters with various marine species. Head to the northeast to observe captivating creatures such as kudagombe, glass goby, and deep sea bannerfish. In the western part, you'll find a vibrant cleaning station where astragalus and bannerfish engage in their intricate cleaning rituals. Depending on the season, keep an eye out for intriguing species like frogfish and nudibranchs around the roots.
The absence of strong currents ensures a tranquil diving experience, allowing you to fully immerse yourself in the underwater beauty of this site. If you're seeking a relaxing fish-watching and photo-dive excursion, visit the renowned Azahata Root located in the southern part of Kushimoto. Considered one of the best points in the area, this must-visit spot guarantees memorable moments for divers of all skill levels.
Explore this remarkable dive site along the 潮岬周遊線 in Kushimoto, Higashimuro County, Wakayama Prefecture, Japan. Embark on an unforgettable underwater adventure that combines captivating marine life with stunning root formations. With its optimized conditions for divers and a picturesque location, this dive site in Japan is a true underwater paradise.
Diving Conditions Score for Sumisaki
7.1
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Sumisaki
Depth
18m
Visibility
9m
Experience Level
beginner
advanced
expert
Weather Conditions for Sumisaki
Wave Height
1.5m
Wind Speed
12.2 m/s
Water Temp
25.7°C
Visibility
20.4km
Cloud Cover
68%
Wave Period
7.25s
Air Temperature
23.8°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Sumisaki
Alpha
Dive Score Chart for Sumisaki
Best time to dive: 16:00 with score 6.2783999999999995/10. Water conditions: Waves 1.44m, Wind 21.4 m/s.Best night dive time: 23:00 with score 6.9138/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Sumisaki: 06:00
Sunset at Sumisaki: 18:00
Optimal diving conditions at Sumisaki 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
23:00Score: 6.9/10
Waves: 1.26m (7.6s), Wind: 0.5 m/s
Safest Overall
17:00Score: 6.3/10
Waves: 1.42m (7.05s), Wind: 17.7 m/s
Best Day
16:00Score: 6.3/10
Waves: 1.44m, Wind: 21.4 m/s
Seasonal Analysis for SumisakiAlpha
Historical patterns and best seasons for diving at Sumisaki
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 Sumisaki
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 Sumisaki
January
Score: 8.9
December
Score: 8.7
February
Score: 8.5
Ideal Conditions for Sumisaki
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 Sumisaki
Sumisaki 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 28, 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.
13 Dive sites near Sumisaki in
Got feedback?
Help us improve this dive site by giving us feedback.