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Kode no dokutsu

Discover an extraordinary dive site in Japan where underwater caves conceal captivating wonders. Below the surface lies a cave that stretches for 25 meters in length and 10 meters in width, revealing a mesmerizing realm for divers. Although these caves are not deep, they offer an enchanting space to explore and encounter majestic rays and occasional resting sharks. As you emerge from the cave, be enchanted by the ethereal blue glow, while schools of lanternfish and vibrant marine life create a breathtaking spectacle.

This renowned dive location holds a special allure for advanced and expert divers. Tucked within the cave's darkness, it becomes a haven for various fish species that thrive in such environments. Striking groupers and shrimp are abundantly scattered throughout, while tiger fish gracefully reside in the shallower sections of the deepest part. The caves' proximity to the open ocean beyond the cove attracts magnificent dogfish sharks seeking refuge within, offering divers a unique and diverse underwater experience.

Immerse yourself in the hidden treasures of this captivating dive site located in Ainan, Minami-Uwa County, Ehime Prefecture, Japan. Unleash your adventurous spirit and uncover the stunning underwater scenery that awaits within these remarkable caves. Take delight in exploring Japan's remarkable dive site, where natural marvels and captivating marine life come together to create an extraordinary diving experience.

Diving Conditions Score for Kode no dokutsu

6.9
Above Average

Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Kode no dokutsu

Experience Level

advanced
expert

Weather Conditions for Kode no dokutsu

Wave Height

1.5m

Wind Speed

27 m/s

Water Temp

24.2°C

Visibility

17.76km

Cloud Cover

100%

Wave Period

6.05s

Air Temperature

24.8°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Kode no dokutsu
Alpha

Dive Score Chart for Kode no dokutsu

Best time to dive: 8:00 with score 6.253733333333333/10. Water conditions: Waves 1.6m, Wind 36.7 m/s.Best night dive time: 0:00 with score 6.816666666666666/10.

Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.

Sunrise at Kode no dokutsu: 06:00
Sunset at Kode no dokutsu: 18:00

Optimal diving conditions at Kode no dokutsu 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
0:00

Score: 6.8/10
Waves: 0.86m (4.15s), Wind: 24.9 m/s

🌞
Safest Overall
8:00

Score: 6.3/10
Waves: 1.6m (5.3s), Wind: 36.7 m/s

🌞
Best Day
8:00

Score: 6.3/10
Waves: 1.6m, Wind: 36.7 m/s

Seasonal Analysis for Kode no dokutsu
Alpha

Historical patterns and best seasons for diving at Kode no dokutsu

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 Kode no dokutsu

Winter

Avg. Score: 8.5/10

Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.

Best Months for Kode no dokutsu

January
Score: 8.6
February
Score: 8.4
December
Score: 8.4

Ideal Conditions for Kode no dokutsu

Water Temp

Thermometer Emoji

27.2°C / 81.0°F

August

Visibility

Telescope Emoji

13.4m / 44.0ft

November

Wave Height

Wave Emoji

1.7m / 5.6ft

October

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Kode no dokutsu

Kode no dokutsu shows typical northern hemisphere patterns with August being the warmest month (27.2°C) and February the coldest (3.8°C). The calmest conditions typically occur in October with average wave heights of 1.7m and wave periods of 8.0s. The most comfortable wave conditions are in October 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 October to December, 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.

Scoring Legend:
9-10 (Excellent)
7-8 (Good)
5-6 (Average)
3-4 (Poor)
1-2 (Dangerous)

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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