Skip to content
Go to Dive Champ home pageDive Champ LogoDive Champ

South Rock

The southern slope of this area showcases stunning 30-meter-high cliffs, sculpted by the forceful waves of typhoons. These captivating formations create a visually dynamic landscape that is sure to leave a lasting impression. As you explore the rocky terrain, prepare to encounter steep drop-offs, adding an element of excitement to your dive. Dive enthusiasts with a penchant for underwater ruins and unique topography will appreciate the extensive terraces found along the southern slope, particularly between depths of 25 to 35 meters. Keep your eyes peeled for occasional sightings of large fish, further enhancing the thrill of your underwater adventure.

Expect an array of diverse marine life at this dive site, including snappers, groupers, scorpionfish, rockfish schools, amberjack, yellowtail, turtles, and intermittent appearances by sharks, rays, frogfish, and flounders. However, it's important to note that the fish population here may be comparatively smaller than other nearby spots. The dynamic topography of the area lacks hiding places for smaller fish, making it challenging for medium-sized fish to gather for food. Nonetheless, the unique underwater landscape and the possibility of encountering larger species make this a thrilling spot for experienced divers.

Visibility at this dive site is approximately 20 meters, offering a favorable underwater viewing experience. The maximum depth is 23 meters, making it suitable for advanced and expert divers. Situated in Kashima, Ainan, Minami-Uwa County, Ehime Prefecture, Japan, this incredible dive location presents an opportunity to explore the stunning underwater world Japan has to offer.

Diving Conditions Score for South Rock

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 South Rock

Depth

23m

Visibility

20m

Experience Level

advanced
expert

Weather Conditions for South Rock

Wave Height

1.54m

Wind Speed

29 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 South Rock
Alpha

Dive Score Chart for South Rock

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 South Rock: 06:00
Sunset at South Rock: 18:00

Optimal diving conditions at South Rock 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 South Rock
Alpha

Historical patterns and best seasons for diving at South Rock

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 South Rock

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 South Rock

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

Ideal Conditions for South Rock

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 South Rock

South Rock 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.

16 Dive sites near South Rock in

Find more dive sites in Japan

JapanJapan

Japan

Got feedback?

Help us improve this dive site by giving us feedback.