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Kurohae

Welcome to Black Fly, site 5 of the National Park Special Protection Area. This stunning dive spot is ideal for days with calm tides and favorable sea conditions due to the often fast currents. It offers a unique experience with an impressive abundance of fish species.

To the north, you'll encounter a captivating hard coral colony, while the south boasts a large colony of soft corals and nannyo goatfish. At this single point, you can revel in the condensed beauty of the ocean scenery in this area.

Black Fly is renowned for its diverse marine life, including snappers, groupers, scorpionfish, schools of rockfish, amberjack, yellowtail, turtles, and occasional sightings of sharks, rays, frogfish, and flatfish. The underwater ecosystem here is vibrant and teeming with these remarkable creatures.

With a visibility of 10m and a maximum depth of 18m, Black Fly is recommended for advanced and expert divers. This captivating dive site is located in Kashima, Ainan, Minami-Uwa County, Ehime Prefecture, Japan.

Experience the wonders of this underwater paradise at Black Fly, a must-visit dive site for diving enthusiasts.


Diving Conditions Score for Kurohae

6.8
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 Kurohae

Depth

18m

Visibility

10m

Experience Level

advanced
expert

Weather Conditions for Kurohae

Wave Height

0.94m

Wind Speed

26.7 m/s

Water Temp

24.1°C

Visibility

17.56km

Cloud Cover

62%

Wave Period

4.45s

Air Temperature

22.1°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Kurohae
Alpha

Dive Score Chart for Kurohae

Best time to dive: 14:00 with score 6.9366/10. Water conditions: Waves 1.08m, Wind 34.6 m/s.Best night dive time: 0:00 with score 6.337533333333334/10.

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

Sunrise at Kurohae: 06:00
Sunset at Kurohae: 18:00

Optimal diving conditions at Kurohae 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
14:00

Score: 6.9/10
Waves: 1.08m (4.55s), Wind: 34.6 m/s

🌙
Best Night
0:00

Score: 6.3/10
Waves: 1.24m, Wind: 32.2 m/s

Seasonal Analysis for Kurohae
Alpha

Historical patterns and best seasons for diving at Kurohae

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 Kurohae

Winter

Avg. Score: 10.0/10

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

Best Months for Kurohae

January
Score: 10.0
February
Score: 10.0
March
Score: 10.0

Ideal Conditions for Kurohae

Water Temp

Thermometer Emoji

23.3°C / 73.9°F

June

Visibility

Telescope Emoji

20.1m / 65.9ft

October

Wave Height

Wave Emoji

0.2m / 0.7ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Kurohae

Kurohae shows typical northern hemisphere patterns with June being the warmest month (23.3°C) and December the coldest (19.3°C). The calmest conditions typically occur in January with average wave heights of 0.2m 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.

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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