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

Mikurajima Island

Located in Japan, Mikurajima is a breathtaking dive site known for its vibrant population of more than 200 wild dolphins. However, please note that only skin diving is permitted to interact with these magnificent creatures; scuba diving is strictly prohibited. Respect for the dolphins is paramount, as they are individually identified and protected from any form of touching.

To swim with the dolphins, there are two options available. The first method involves landing on Mikurajima and approaching the dolphins in a small boat. This allows for a closer and more intimate encounter. Please remember that sightings cannot be guaranteed, as these dolphins roam freely in their natural habitat.

Alternatively, you can opt to take a larger boat from the nearby Miyakejima, approximately an hour's journey. It is essential to plan your visit according to the weather, as winter conditions may occasionally hinder sailing. And remember, if you do find yourself in close proximity to a dolphin, refrain from touching it.

Mikurajima offers a remarkable experience for divers of all skill levels, whether you are a beginner, advanced, or expert. The visibility in these crystal-clear waters reaches an impressive 14 meters, while the maximum depth is around 0 meters. This makes it an excellent location for divers looking for a memorable adventure.

Discover the wonder of Mikurajima's wild dolphins as you immerse yourself in the enchanting waters surrounding this captivating dive site.

Diving Conditions Score for Mikurajima Island

6.7
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 Mikurajima Island

Visibility

14m

Experience Level

beginner
advanced
expert

Weather Conditions for Mikurajima Island

Wave Height

1.9m

Wind Speed

25.5 m/s

Water Temp

25.4°C

Visibility

25.36km

Cloud Cover

94%

Wave Period

8.25s

Air Temperature

22.1°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Mikurajima Island
Alpha

Dive Score Chart for Mikurajima Island

Best time to dive: 17:00 with score 6.139/10. Water conditions: Waves 1.78m, Wind 5.8 m/s.Best night dive time: 19:00 with score 5.9826/10.

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

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

Optimal diving conditions at Mikurajima 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
17:00

Score: 6.1/10
Waves: 1.78m (9.35s), Wind: 5.8 m/s

🌙
Best Night
19:00

Score: 6.0/10
Waves: 1.76m, Wind: 2.6 m/s

Seasonal Analysis for Mikurajima Island
Alpha

Historical patterns and best seasons for diving at Mikurajima 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 Mikurajima Island

Winter

Avg. Score: 8.4/10

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

Best Months for Mikurajima Island

January
Score: 8.5
December
Score: 8.4
February
Score: 8.3

Ideal Conditions for Mikurajima Island

Water Temp

Thermometer Emoji

26.9°C / 80.4°F

August

Visibility

Telescope Emoji

11.7m / 38.4ft

June

Wave Height

Wave Emoji

3.7m / 12.1ft

November

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Mikurajima Island

Mikurajima Island shows typical northern hemisphere patterns with August being the warmest month (26.9°C) and January the coldest (7.6°C). The calmest conditions typically occur in November with average wave heights of 3.7m and wave periods of 8.0s. The most comfortable wave conditions are in November 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). June is usually the driest month with 0.4mm of precipitation. For beginners, the best time to visit would be during November to January, 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.

3 Dive sites near Mikurajima Island in

Find more dive sites in Japan

JapanJapan

Japan

Got feedback?

Help us improve this dive site by giving us feedback.