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

Nakagi

Nakagi, located in the southernmost part of the Izu Peninsula in Japan, is a captivating dive site that offers an ever-changing underwater landscape thanks to the presence of the Black Stream. With its picturesque scenery shaped by centuries of natural beauty, Nakagi entices both land and underwater divers.

During the early summer, divers can encounter magnificent eagle rays, while sea turtles can be spotted year-round. On occasion, a group of hammerhead sharks might surprise you. In the winter months, lucky divers may witness the majestic humpback whales passing by in the offshore waters.

The idyllic port and resort-like underwater environment of Nakagi are truly spectacular. The primary dive points, namely "Toshima" and "Hayama," offer a fantastic diving experience. Here are some tips to enhance your dive: there is a submersible buoy at a depth of 5-10 meters, so make use of it. Enter the water with a back roll entry from the aft-deck and stern. Exiting the water is convenient as you can easily be lifted onto the boat. Dive boats will be present and follow your progress throughout your dive. We recommend planning a dive for 35-40 minutes. It takes around 5 to 10 minutes to reach the entry point, and the dive boats are shared.

Nakagi boasts excellent visibility of 13 meters and a maximum depth of 24 meters, making it suitable for divers of all levels, from beginners to advanced and expert divers. Plan your visit to Nakagi in Minamiizu, Kamo County, Shizuoka Prefecture, Japan, and explore the wonders that lie beneath its pristine waters.

Diving Conditions Score for Nakagi

6.6
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 Nakagi

Depth

24m

Visibility

13m

Experience Level

beginner
advanced
expert

Weather Conditions for Nakagi

Wave Height

1.36m

Wind Speed

31.1 m/s

Water Temp

23.2°C

Visibility

27.36km

Cloud Cover

22%

Wave Period

6.1s

Air Temperature

21.4°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Nakagi
Alpha

Dive Score Chart for Nakagi

Best time to dive: 10:00 with score 6.8661/10. Water conditions: Waves 1.34m, Wind 6.9 m/s.Best night dive time: 0:00 with score 6.813533333333333/10.

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

Sunrise at Nakagi: 06:00
Sunset at Nakagi: 18:00

Optimal diving conditions at Nakagi 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: 6.9/10
Waves: 1.34m (6.7s), Wind: 6.9 m/s

🌞
Safest Overall
9:00

Score: 6.8/10
Waves: 1.36m (6.75s), Wind: 5.4 m/s

🌙
Best Night
0:00

Score: 6.8/10
Waves: 1.4m, Wind: 3.2 m/s

Seasonal Analysis for Nakagi
Alpha

Historical patterns and best seasons for diving at Nakagi

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 Nakagi

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 Nakagi

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

Ideal Conditions for Nakagi

Water Temp

Thermometer Emoji

23.5°C / 74.3°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 Nakagi

Nakagi shows typical northern hemisphere patterns with June being the warmest month (23.5°C) and December the coldest (19.5°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.

13 Dive sites near Nakagi in

Find more dive sites in Japan

JapanJapan

Japan

Got feedback?

Help us improve this dive site by giving us feedback.