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Fukashima Island

Fukushima, a small island in Oita Prefecture, Japan, offers an exciting diving experience for both beginner and advanced divers. Located about 9 km south of Kanie Port, this picturesque island is home to a population of about 30 people and nearly 100 cats, known as island cats. The island is divided into two parts, connected by a captivating sandbar that resembles the shape of a gourd when viewed from above.

As you explore the underwater world of Fukushima, you'll be greeted by a diverse and vibrant marine ecosystem. With a visibility of around 8m and a maximum depth of 16m, you'll have the opportunity to discover dynamic terrains, stunning coral reefs, and captivating soft coral beds. The underwater landscape is adorned with colorful schools of fish, such as clownfish amidst the anemone fields, surrounded by snapper damsels. Gimpo and frogfish can also be spotted abundantly, adding to the excitement of your dive. If you're lucky, you may even encounter dolphins and turtles during your dives in Fukushima.

Fukushima's close proximity to Saiki, Oita Prefecture makes it easily accessible for divers seeking a unique diving experience in Japan. Whether you are a beginner or an advanced diver, Fukushima's underwater wonders are sure to leave you in awe. Discover the beauty and tranquility of this enchanting dive site as you immerse yourself in the rich marine life that awaits beneath the surface. Begin your underwater adventure in Fukushima and create memories that will last a lifetime.

Diving Conditions Score for Fukashima Island

7.4
Good

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

Dive Site Overview for Fukashima Island

Depth

16m

Visibility

8m

Experience Level

beginner
advanced

Weather Conditions for Fukashima Island

Wave Height

0.7m

Wind Speed

14.2 m/s

Water Temp

24.3°C

Visibility

32.46km

Cloud Cover

27%

Wave Period

8.05s

Air Temperature

21.1°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Fukashima Island
Alpha

Dive Score Chart for Fukashima Island

Best time to dive: 12:00 with score 7.9336760683760685/10. Water conditions: Waves 0.7m, Wind 22.6 m/s.Best night dive time: 0:00 with score 7.705162365591397/10.

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

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

Optimal diving conditions at Fukashima 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
12:00

Score: 7.9/10
Waves: 0.7m (7.8s), Wind: 22.6 m/s

🌙
Best Night
0:00

Score: 7.7/10
Waves: 0.64m, Wind: 23.4 m/s

Seasonal Analysis for Fukashima Island
Alpha

Historical patterns and best seasons for diving at Fukashima 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 Fukashima Island

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 Fukashima Island

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

Ideal Conditions for Fukashima Island

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 Fukashima Island

Fukashima Island 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 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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