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Yokoshima danso

Located in Ainan, Minami-Uwa County, Ehime Prefecture, Japan, our dive site offers a captivating underwater experience. With a depth range of 5-9 meters and stretching over 1 kilometer in a straight line, this site boasts a unique combination of hard and soft corals on its monolithic rock formation. Swim-throughs are possible in certain areas, thanks to side holes near the monolith.

Divers of all levels, from beginners to experts, will appreciate the rare coexistence of hard and soft corals at this site. In the side holes, you may even spot rays, some reaching lengths of over 2 meters. The shallow areas are particularly stunning, with the sunlight illuminating the surroundings and creating a mesmerizing scene. The vibrant orange hues of snappers, accompanied by the brilliant blues of solas snappers, against a backdrop of coral reefs, make for an enchanting sight.

Aside from the dazzling marine life, this site also boasts good visibility of up to 17 meters. Its maximum depth reaches 13 meters, providing ample opportunities for exploration. Divers can expect to encounter a variety of species, including snappers, groupers, scorpionfish, schools of yellowtail snapper, amberjack, yellowtail, and cat sharks. Occasionally, lucky divers may even come across sharks or rays, making their dive all the more thrilling.

Don't miss the chance to explore this remarkable dive site in Japan. Whether you are a beginner, advanced diver, or an expert, the diversity and beauty of the underwater world at this location will surely leave a lasting impression.

Diving Conditions Score for Yokoshima danso

7
Good

Good diving conditions!
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Yokoshima danso

Depth

13m

Visibility

17m

Experience Level

beginner
advanced
expert

Weather Conditions for Yokoshima danso

Wave Height

0.94m

Wind Speed

34.6 m/s

Water Temp

24°C

Visibility

27.9km

Cloud Cover

36%

Wave Period

4.65s

Air Temperature

21.8°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Yokoshima danso
Alpha

Dive Score Chart for Yokoshima danso

Best time to dive: 6:00 with score 7.283333333333333/10. Water conditions: Waves 0.94m, Wind 32.1 m/s.Best night dive time: 2:00 with score 6.843833333333333/10.

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

Sunrise at Yokoshima danso: 06:00
Sunset at Yokoshima danso: 18:00

Optimal diving conditions at Yokoshima danso 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
6:00

Score: 7.3/10
Waves: 0.94m (4.7s), Wind: 32.1 m/s

🌙
Best Night
2:00

Score: 6.8/10
Waves: 0.96m, Wind: 36 m/s

Seasonal Analysis for Yokoshima danso
Alpha

Historical patterns and best seasons for diving at Yokoshima danso

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 Yokoshima danso

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 Yokoshima danso

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

Ideal Conditions for Yokoshima danso

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 Yokoshima danso

Yokoshima danso 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 22, 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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