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Kanmurishima Island

Discover Kanmurishima Island, an uninhabited dive site located near the exit of Wakasa Bay in Kyoto Prefecture, Japan. With a circumference of 4km, this captivating island boasts stunning natural beauty and is renowned as the home of the Great Horned Plover, a remarkable natural monument. The waters surrounding Kanmurishima Island are characterized by sheer cliffs, creating a mesmerizing underwater landscape that is sure to captivate divers.

Prepare to be amazed by the diverse marine life that inhabits these waters. You'll encounter magnificent migratory fish like yellowtail and red snapper, as well as yellowtail and flathead mackerel hunting in schools of spiny dogfish, horse mackerel, and Japanese sardines. Witness the awe-inspiring spectacle of pikes forming tornado-like formations during the fall season. The area is also rich in soft corals, offering a breathtaking backdrop for encounters with yellowfin reef sharks, bluefin reef sharks, scorpionfish, flathead reef sharks, and spoonbills.

One of the main attractions of diving at Kanmurishima Island is the exceptional clarity of the water, thanks to its location in the open sea. Witness the mesmerizing sight of vast schools of yellowtail that frequently grace these waters. Although the range of colorful fish may be more limited, the abundance of large migratory species ensures a truly unforgettable dive experience. It's important to note that many diving points in this area have strong currents and deeper depths, making them ideal for intermediate to advanced divers.

With a visibility of 16m and a maximum depth of 25m, Kanmurishima Island promises an exhilarating diving experience for advanced and expert divers. Located in Maizuru, Kyoto Prefecture, Japan, this remarkable dive site offers a unique opportunity to explore the captivating underwater world of the region.

Diving Conditions Score for Kanmurishima Island

6
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 Kanmurishima Island

Depth

25m

Visibility

16m

Experience Level

advanced
expert

Weather Conditions for Kanmurishima Island

Wave Height

1.52m

Wind Speed

41.9 m/s

Water Temp

22.8°C

Visibility

8.72km

Cloud Cover

40%

Wave Period

6.95s

Air Temperature

22.5°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Kanmurishima Island
Alpha

Dive Score Chart for Kanmurishima Island

Best time to dive: 15:00 with score 5.7514/10. Water conditions: Waves 1.5m, Wind 39.5 m/s.Best night dive time: 0:00 with score 6.938666666666667/10.

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

Sunrise at Kanmurishima Island: 06:00
Sunset at Kanmurishima Island: 18:00

Optimal diving conditions at Kanmurishima Island 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: 6.9/10
Waves: 0.6m (6.25s), Wind: 20.4 m/s

🌞
Safest Overall
13:00

Score: 5.7/10
Waves: 1.46m (7.2s), Wind: 41 m/s

🌞
Best Day
15:00

Score: 5.8/10
Waves: 1.5m, Wind: 39.5 m/s

Seasonal Analysis for Kanmurishima Island
Alpha

Historical patterns and best seasons for diving at Kanmurishima Island

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 Kanmurishima Island

Winter

Avg. Score: 7.8/10

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

Best Months for Kanmurishima Island

January
Score: 8.0
February
Score: 7.7
December
Score: 7.7

Ideal Conditions for Kanmurishima Island

Water Temp

Thermometer Emoji

26.0°C / 78.8°F

August

Visibility

Telescope Emoji

12.0m / 39.4ft

May

Wave Height

Wave Emoji

2.3m / 7.5ft

November

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Kanmurishima Island

Kanmurishima Island shows typical northern hemisphere patterns with August being the warmest month (26.0°C) and February the coldest (2.0°C). The calmest conditions typically occur in November with average wave heights of 2.3m 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). April is usually the driest month with 0.0mm 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.

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

Last updated: 1 min. ago - Jun 21, 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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