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Dobuiso

Welcome to Chichijima, a stunning dive site located on the eastern side of Chichijima in Japan's Ogasawara Subprefecture. This captivating spot features two magnificent reefs that plunge to a depth of 50 meters, separated by a mesmerizing channel. Prepare to be enthralled by the abundance of marine life that awaits you here.

As you navigate through the waterway, you'll be greeted by a diverse array of fish species. Keep your eyes peeled for the impressive bluefin and yellowfin tuna, as well as the elusive yellowtail. The waters are alive with bustling schools of bigeye trevally, bluefin mackerel, whitetip, and whitetip trevally. Additionally, you'll have the pleasure of encountering large schools of fascinating whitefish and yellowtail. Occasional visitors to this underwater paradise include majestic dolphins and graceful manta rays.

With its excellent visibility of 19 meters and a maximum depth of 21 meters, this dive site caters to divers of all levels. Whether you're a beginner, advanced, or an expert diver, Chichijima promises an unforgettable experience.

Located near Ogasawara, Ogasawara Subprefecture, Tokyo, 100-2101, Japan, this captivating destination is easily accessible for divers seeking unparalleled underwater adventures.

Prepare to immerse yourself in the beauty and wonder of Chichijima. Dive into a world brimming with vibrant marine life, breathtaking reefs, and the possibility of encountering pelagic fish and dolphins during your safety stop. Get ready for an extraordinary diving experience in Japan's enchanting waters.

Diving Conditions Score for Dobuiso

8.9
Very Good

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

Dive Site Overview for Dobuiso

Depth

21m

Visibility

19m

Experience Level

beginner
advanced
expert

Weather Conditions for Dobuiso

Wave Height

1.04m

Wind Speed

3.4 m/s

Water Temp

27.4°C

Visibility

26.22km

Cloud Cover

20%

Wave Period

7.9s

Air Temperature

25.9°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Dobuiso
Alpha

Dive Score Chart for Dobuiso

Best time to dive: 10:00 with score 8.135972955974843/10. Water conditions: Waves 1.08m, Wind 5.6 m/s.Best night dive time: 4:00 with score 7.754072823779193/10.

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

Sunrise at Dobuiso: 06:00
Sunset at Dobuiso: 18:00

Optimal diving conditions at Dobuiso 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
10:00

Score: 8.1/10
Waves: 1.08m (7.95s), Wind: 5.6 m/s

🌞
Safest Overall
9:00

Score: 8.1/10
Waves: 1.08m (7.95s), Wind: 3.4 m/s

🌙
Best Night
4:00

Score: 7.8/10
Waves: 1.04m, Wind: 2.8 m/s

Seasonal Analysis for Dobuiso
Alpha

Historical patterns and best seasons for diving at Dobuiso

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 Dobuiso

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 Dobuiso

January
Score: 8.5
December
Score: 8.5
February
Score: 8.4

Ideal Conditions for Dobuiso

Water Temp

Thermometer Emoji

27.3°C / 81.1°F

August

Visibility

Telescope Emoji

11.8m / 38.7ft

June

Wave Height

Wave Emoji

2.3m / 7.5ft

April

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Dobuiso

Dobuiso shows typical northern hemisphere patterns with July being the warmest month (27.4°C) and February the coldest (14.7°C). The calmest conditions typically occur in April with average wave heights of 2.3m and wave periods of 8.0s. The most comfortable wave conditions are in April 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). April is usually the driest month with 0.0mm of precipitation. For beginners, the best time to visit would be during April to June, 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 16, 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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