Ugan
Welcome to the stunning dive site in Kerama, Japan. Explore the dynamic terrain that perfectly encapsulates the beauty of this location. Dive into the crystal-clear waters surrounding the northeastern region of Zamami Island to witness the magnificent rocky formations and breathtaking drop-offs. With depths reaching up to 35 meters, this dive site offers an exciting adventure for advanced and expert divers.
Immerse yourself in the blue waters teeming with an abundance of marine life. Encounter enchanting butterflyfish, agile tuna, majestic whitetip reef sharks, and majestic yellowtail tunas. Delve into the depths to observe macroscopic organisms like Ribbon eels, pygmy seahorses, vibrant blue tangs, dazzling furisode shrimps, and intriguing spiny crabs.
Be cautious while exploring the strong and occasionally turbulent currents both below and above. However, the effort is rewarded with the enchanting allure of the rocky terrain and the myriad of fish species. Take hold of the roots of the rocky tide and patiently wait for an up-close encounter with magnificent creatures such as bluefin tuna and bigeye trevally.
Located in the Shimajiri region of Okinawa Prefecture, this dive site near Zamami offers a visibility of up to 25 meters and reaches a maximum depth of 19 meters. Prepare yourself for an unforgettable diving experience in this captivating underwater world.
Immerse yourself in the blue waters teeming with an abundance of marine life. Encounter enchanting butterflyfish, agile tuna, majestic whitetip reef sharks, and majestic yellowtail tunas. Delve into the depths to observe macroscopic organisms like Ribbon eels, pygmy seahorses, vibrant blue tangs, dazzling furisode shrimps, and intriguing spiny crabs.
Be cautious while exploring the strong and occasionally turbulent currents both below and above. However, the effort is rewarded with the enchanting allure of the rocky terrain and the myriad of fish species. Take hold of the roots of the rocky tide and patiently wait for an up-close encounter with magnificent creatures such as bluefin tuna and bigeye trevally.
Located in the Shimajiri region of Okinawa Prefecture, this dive site near Zamami offers a visibility of up to 25 meters and reaches a maximum depth of 19 meters. Prepare yourself for an unforgettable diving experience in this captivating underwater world.
Diving Conditions Score for Ugan
7.6
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Ugan
Depth
19m
Visibility
25m
Experience Level
advanced
expert
Weather Conditions for Ugan
Wave Height
1.3m
Wind Speed
20.7 m/s
Water Temp
26.7°C
Visibility
27.76km
Cloud Cover
1%
Wave Period
9s
Air Temperature
27.6°C
Precipitation
0 mm
Detailed 7-Day Diving Forecast for Ugan
Alpha
Dive Score Chart for Ugan
Best time to dive: 8:00 with score 8.3657/10. Water conditions: Waves 0.94m, Wind 5.5 m/s.Best night dive time: 0:00 with score 8.236735009310987/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Ugan: 06:00
Sunset at Ugan: 18:00
Optimal diving conditions at Ugan 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
8:00Score: 8.4/10
Waves: 0.94m (9.4s), Wind: 5.5 m/s
Best Night
0:00Score: 8.2/10
Waves: 0.84m, Wind: 3.9 m/s
Seasonal Analysis for UganAlpha
Historical patterns and best seasons for diving at Ugan
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 Ugan
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 Ugan
January
Score: 10.0
February
Score: 10.0
December
Score: 10.0
Ideal Conditions for Ugan
Water Temp
22.6°C / 72.7°F
June
Visibility
20.1m / 65.9ft
October
Wave Height
0.2m / 0.7ft
January
Wave Period
8.0s
January
Seasonal Insights for Ugan
Ugan shows typical northern hemisphere patterns with June being the warmest month (22.6°C) and December the coldest (18.6°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
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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