Western Shoals
This dive site is located in Apra Harbor, United States, close to Piti Municipality, Guam. With a maximum depth of 19m and visibility up to 11m, it offers a splendid underwater experience. This dive is accessible only by boat, making it perfect for divers of all levels, from beginners to advanced.
The dive site features a sloping reef teeming with a diverse array of corals and abundant marine life, including thousands of fish. Green Sea Turtles can be found here, along with several large anemone beds in the shallows. This vibrant ecosystem also serves as a nursery for various fish species, including larger wrasse.
Experience the underwater wonders of Apra Harbor, where you can explore the colorful corals, encounter fascinating marine creatures, and appreciate the breathtaking diversity of the underwater world. Whether you are a beginner or an experienced diver, this site offers an unforgettable adventure.
The dive site features a sloping reef teeming with a diverse array of corals and abundant marine life, including thousands of fish. Green Sea Turtles can be found here, along with several large anemone beds in the shallows. This vibrant ecosystem also serves as a nursery for various fish species, including larger wrasse.
Experience the underwater wonders of Apra Harbor, where you can explore the colorful corals, encounter fascinating marine creatures, and appreciate the breathtaking diversity of the underwater world. Whether you are a beginner or an experienced diver, this site offers an unforgettable adventure.
Diving Conditions Score for Western Shoals
5.8
AverageAverage conditions, be alert.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Western Shoals
Depth
19m
Visibility
11m
Experience Level
beginner
advanced
Weather Conditions for Western Shoals
Wave Height
0.94m
Wind Speed
22.7 m/s
Water Temp
29.5°C
Visibility
7.84km
Cloud Cover
72%
Wave Period
5.95s
Air Temperature
31.2°C
Precipitation
0.2 mm
Detailed 7-Day Diving Forecast for Western Shoals
Alpha
Dive Score Chart for Western Shoals
Best time to dive: 17:00 with score 7.446406870229007/10. Water conditions: Waves 0.78m, Wind 7.3 m/s.Best night dive time: 20:00 with score 7.2282252525252515/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Sunrise at Western Shoals: 06:00
Sunset at Western Shoals: 18:00
Optimal diving conditions at Western Shoals 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
17:00Score: 7.4/10
Waves: 0.78m (6.55s), Wind: 7.3 m/s
Best Night
20:00Score: 7.2/10
Waves: 0.74m, Wind: 5.4 m/s
Seasonal Analysis for Western ShoalsAlpha
Historical patterns and best seasons for diving at Western Shoals
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 Western Shoals
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 Western Shoals
January
Score: 9.5
February
Score: 9.4
November
Score: 9.4
Ideal Conditions for Western Shoals
Water Temp
27.6°C / 81.7°F
May
Visibility
11.2m / 36.7ft
November
Wave Height
1.4m / 4.6ft
September
Wave Period
8.0s
January
Seasonal Insights for Western Shoals
Western Shoals shows typical northern hemisphere patterns with May being the warmest month (27.6°C) and January the coldest (22.7°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 1.0mm 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 20, 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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