Alupat Island
For those seeking an unforgettable adventure, the night dives at this location are exceptional. Accessed only by boat, divers can witness the mesmerizing spectacle of marine life that comes alive under the cover of darkness. Don't miss the chance to witness the occasional sighting of a majestic Manta Ray, gracefully gliding through the waters.
Alupat Island is not only a haven for marine creatures. Dolphins are often spotted in these waters, delighting divers with their playful presence. The early hours and the seasons of spring and fall offer the best opportunities to spot the impressive Manta Rays. And on virtually every dive, divers can expect to encounter charming turtles, adding yet another dimension to their underwater exploration.
Situated in the United States, near Alupang Cove on Condo Ln in Tamuning, Guam, this dive site is easily accessible to divers of all levels, making it particularly suitable for beginners. The maximum depth of 13m ensures a comfortable dive experience, allowing divers to fully appreciate the wonders of the sea.
Unlock the treasures that lie beneath the surface at this remarkable dive site off Alupat Island. Indulge in unforgettable underwater adventures that will leave you in awe of the natural wonders that abound in this remarkable part of the United States.
Diving Conditions Score for Alupat Island
Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Alupat Island
Depth
13m
Visibility
16m
Experience Level
Weather Conditions for Alupat Island
Wave Height
0.9m
Wind Speed
14.3 m/s
Water Temp
29.7°C
Visibility
11.76km
Cloud Cover
100%
Wave Period
6.35s
Air Temperature
28.1°C
Precipitation
0.2 mm
Dive Score Chart for Alupat Island
Best time to dive: 17:00 with score 7.486262962962963/10. Water conditions: Waves 0.78m, Wind 7.7 m/s.Best night dive time: 18:00 with score 7.555827450980392/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Alupat Island 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: 7.6/10
Waves: 0.78m (6.8s), Wind: 4.7 m/s
Score: 7.5/10
Waves: 0.78m (6.75s), Wind: 7.7 m/s
Score: 7.5/10
Waves: 0.78m, Wind: 7.7 m/s
Seasonal Analysis for Alupat IslandAlpha
Historical patterns and best seasons for diving at Alupat Island
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 Alupat Island
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Alupat Island
Ideal Conditions for Alupat Island
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 Alupat Island
Alupat Island 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 20, 2026