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Tanegashima Island

Located approximately 100 km south of Kagoshima in Japan, this island boasts not only a renowned space center for rocket launches but also serves as a captivating surfing destination. Accessible within 30 minutes by plane or 1 hour and 30 minutes by high-speed boat from Kagoshima, this island holds great allure for divers.

The surrounding waters are teeming with an abundance of eddy coral, creating a thriving ecosystem. Divers can expect to encounter various species such as striped Jacks, Red Flounder, Yellow Snappers, South Pacific Snappers, Sea Anglers, Joe Fish, and Stingrays amidst the sandy areas. The rocky zones offer sightings of yellowtail, Asian red snapper, and angelfish. Additionally, dynamic points within the waters grant divers the opportunity to observe eagle rays and sea turtles.

With shallow ocean depths and fast currents prevailing throughout, the preferred diving style here is drift diving. Boat diving takes precedence, though there is also a convenient beach entry point for divers.

Given a maximum depth of 5m and visibility of 0m, this dive site caters to divers of various skill levels, from beginners to advanced. It is located in Nishinoomote, Kagoshima Prefecture, Japan, providing divers with a close and accessible location.

Experience the enchantment of this Japanese dive site, where adventure and underwater exploration await.

Diving Conditions Score for Tanegashima Island

7.8
Good

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

Dive Site Overview for Tanegashima Island

Depth

5m

Experience Level

beginner
advanced

Weather Conditions for Tanegashima Island

Wave Height

0.84m

Wind Speed

9.5 m/s

Water Temp

26°C

Visibility

21.4km

Cloud Cover

97%

Wave Period

6.45s

Air Temperature

23.8°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Tanegashima Island
Alpha

Dive Score Chart for Tanegashima Island

Best time to dive: 12:00 with score 7.7943333333333324/10. Water conditions: Waves 0.92m, Wind 8.3 m/s.Best night dive time: 1:00 with score 7.555294871794872/10.

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

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

Optimal diving conditions at Tanegashima 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: 7.8/10
Waves: 0.92m (6.25s), Wind: 8.3 m/s

🌙
Best Night
1:00

Score: 7.6/10
Waves: 0.84m, Wind: 8.4 m/s

Seasonal Analysis for Tanegashima Island
Alpha

Historical patterns and best seasons for diving at Tanegashima 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 Tanegashima Island

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 Tanegashima Island

January
Score: 8.8
February
Score: 8.4
December
Score: 8.4

Ideal Conditions for Tanegashima Island

Water Temp

Thermometer Emoji

27.3°C / 81.1°F

July

Visibility

Telescope Emoji

12.8m / 42.0ft

January

Wave Height

Wave Emoji

1.5m / 4.9ft

January

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Tanegashima Island

Tanegashima Island shows typical northern hemisphere patterns with August being the warmest month (28.0°C) and February the coldest (7.4°C). The calmest conditions typically occur in January with average wave heights of 1.5m 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 23, 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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