Agana Bay
Discover the mesmerizing reef situated in front of the AMT Beach House dive shop. Immerse yourself in a vibrant underwater world teeming with a diverse array of hard and soft corals and an abundance of reef fish. This exhilarating dive can only be accessed by boat, offering the perfect opportunity for an incredible drift dive experience.
Prepare to be captivated by the flourishing marine life that calls this reef home. Encounter majestic turtles on almost every dive, adding a touch of awe to your underwater exploration.
Located in Maina, Asan Municipality, Guam, this beautiful diving spot is easily accessible within the United States. With excellent visibility reaching up to 15 meters and a maximum depth of 18 meters, this dive site is suitable for divers of all skill levels, including beginners.
Embark on an unforgettable underwater adventure at this enchanting dive site and create treasured memories in the mesmerizing waters of Guam.
Prepare to be captivated by the flourishing marine life that calls this reef home. Encounter majestic turtles on almost every dive, adding a touch of awe to your underwater exploration.
Located in Maina, Asan Municipality, Guam, this beautiful diving spot is easily accessible within the United States. With excellent visibility reaching up to 15 meters and a maximum depth of 18 meters, this dive site is suitable for divers of all skill levels, including beginners.
Embark on an unforgettable underwater adventure at this enchanting dive site and create treasured memories in the mesmerizing waters of Guam.
Diving Conditions Score for Agana Bay
7
GoodGood diving conditions!
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Agana Bay
Depth
18m
Visibility
15m
Experience Level
beginner
Weather Conditions for Agana Bay
Wave Height
1.36m
Wind Speed
20.7 m/s
Water Temp
29.7°C
Visibility
24.06km
Cloud Cover
96%
Wave Period
7.15s
Air Temperature
27.5°C
Precipitation
0.1 mm
Detailed 7-Day Diving Forecast for Agana Bay
Alpha
Dive Score Chart for Agana Bay
Best time to dive: 6:00 with score 7.251000000000001/10. Water conditions: Waves 1.14m, Wind 23.6 m/s.Best night dive time: 5:00 with score 6.681733333333335/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Agana Bay : 06:00
Sunset at Agana Bay : 18:00
Optimal diving conditions at Agana Bay 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
6:00Score: 7.3/10
Waves: 1.14m (6.65s), Wind: 23.6 m/s
Best Night
5:00Score: 6.7/10
Waves: 1.14m, Wind: 24.5 m/s
Seasonal Analysis for Agana Bay Alpha
Historical patterns and best seasons for diving at Agana Bay
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 Agana Bay
Winter
Avg. Score: 9.4/10
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Agana Bay
January
Score: 9.4
February
Score: 9.4
November
Score: 9.4
Ideal Conditions for Agana Bay
Water Temp
27.2°C / 81.0°F
May
Visibility
11.5m / 37.7ft
November
Wave Height
1.4m / 4.6ft
September
Wave Period
8.0s
January
Seasonal Insights for Agana Bay
Agana Bay shows typical northern hemisphere patterns with May being the warmest month (27.2°C) and January the coldest (22.3°C). The calmest conditions typically occur in September with average wave heights of 1.4m and wave periods of 8.0s. The most comfortable wave conditions are in September 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). February is usually the driest month with 0.6mm of precipitation. For beginners, the best time to visit would be during September to November, 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 25, 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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