Double Reef
With a maximum depth of 20 meters, this dive site is suitable for both beginner and advanced divers. The calm winds and seas during the summer months make it an ideal time to explore this breathtaking underwater wonderland. Additionally, the Northern dive site is located near Finegayan Station in Dededo, offering convenience and accessibility to divers.
Every morning, lucky divers may encounter Spinner Dolphins in the area, adding an extra touch of magic to their dive. Pelagic species are also known to pass through these waters, further enhancing the diversity of marine life that can be admired.
For an unforgettable diving adventure, head to the Northern dive site in Guam, United States. Immerse yourself in crystal-clear waters, mesmerizing coral formations, and a world teeming with marine wonders. Whether you're a beginner or an experienced diver, this easily accessible dive site promises a memorable underwater journey.
Diving Conditions Score for Double Reef
Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.
Dive Site Overview for Double Reef
Depth
20m
Visibility
22m
Experience Level
Weather Conditions for Double Reef
Wave Height
2.4m
Wind Speed
11 m/s
Water Temp
29°C
Visibility
2.58km
Cloud Cover
100%
Wave Period
10.4s
Air Temperature
27.1°C
Precipitation
0.4 mm
Dive Score Chart for Double Reef
Best time to dive: 17:00 with score 6.0809/10. Water conditions: Waves 2.48m, Wind 5.5 m/s.Best night dive time: 23:00 with score 5.987733333333334/10.
Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.
Optimal diving conditions at Double Reef 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: 6.1/10
Waves: 2.48m (10.35s), Wind: 5.5 m/s
Score: 6.0/10
Waves: 2.38m, Wind: 5.3 m/s
Seasonal Analysis for Double ReefAlpha
Historical patterns and best seasons for diving at Double Reef
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 Double Reef
Winter
Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.
Best Months for Double Reef
Ideal Conditions for Double Reef
Water Temp
27.1°C / 80.8°F
May
Visibility
10.5m / 34.4ft
May
Wave Height
1.6m / 5.2ft
September
Wave Period
8.0s
January
Seasonal Insights for Double Reef
Double Reef shows typical northern hemisphere patterns with June being the warmest month (27.3°C) and January the coldest (22.4°C). The calmest conditions typically occur in September with average wave heights of 1.6m 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 1.1mm 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 - Jul 8, 2026