Nakagi
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
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
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
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.
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.
Score: 6.9/10
Waves: 1.34m (6.7s), Wind: 6.9 m/s
Score: 6.8/10
Waves: 1.36m (6.75s), Wind: 5.4 m/s
Score: 6.8/10
Waves: 1.4m, Wind: 3.2 m/s
Seasonal Analysis for NakagiAlpha
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
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Nakagi
Ideal Conditions for Nakagi
Water Temp
23.5°C / 74.3°F
June
Visibility
20.1m / 65.9ft
October
Wave Height
0.2m / 0.7ft
January
Wave Period
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.
Last updated: 1 min. ago - Jun 22, 2026