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Umatac Zero (Wreck)

Discover the remnants of a Japanese Zero plane that met its fate during a powerful typhoon in 1997. Immerse yourself in the thrills of exploration as you encounter fragments of the fuselage, engine block, and propeller nestled in a serene ravine at a depth of approximately 50'. This captivating drift dive can be conveniently accessed either by boat or from the nearby beach. Prior to embarking on your underwater adventure, be sure to seek permission from the landowners and respect the delicate coral ecosystem by refraining from walking on it.

Prepare to be awe-inspired by the vibrant marine life that frequents this site. Encounter schools of captivating small Parrotfish and wrasse's gracefully swimming through the waters. Spotting turtles is a common occurrence on these dives, with occasional sightings of rays and reef sharks adding an extra element of excitement.

With an impressive visibility of 12m and a maximum depth reaching 22m, this extraordinary dive site is suitable for divers of all levels, including beginners. Located near Fort Santo Angel in Umatac Municipality, Guam, United States, this captivating destination promises a memorable dive experience that will leave you in awe.

Diving Conditions Score for Umatac Zero (Wreck)

6.5
Above Average

Decent conditions, proceed with caution.
The score is based on a calculation of the current weather and sea conditions.

Dive Site Overview for Umatac Zero (Wreck)

Depth

22m

Visibility

12m

Experience Level

beginner

Weather Conditions for Umatac Zero (Wreck)

Wave Height

1.18m

Wind Speed

18.2 m/s

Water Temp

29.9°C

Visibility

40.18km

Cloud Cover

41%

Wave Period

7.15s

Air Temperature

31.1°C

Precipitation

0 mm

Detailed 7-Day Diving Forecast for Umatac Zero (Wreck)
Alpha

Dive Score Chart for Umatac Zero (Wreck)

Best time to dive: 14:00 with score 7.213469281045752/10. Water conditions: Waves 1.14m, Wind 5.7 m/s.Best night dive time: 20:00 with score 6.51055238095238/10.

Chart showing hourly dive conditions including wave height, wind speed, water temperature, and visibility throughout the day.

Sunrise at Umatac Zero (Wreck): 06:00
Sunset at Umatac Zero (Wreck): 18:00

Optimal diving conditions at Umatac Zero (Wreck) 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
14:00

Score: 7.2/10
Waves: 1.14m (7.65s), Wind: 5.7 m/s

🌙
Best Night
20:00

Score: 6.5/10
Waves: 1.1m, Wind: 9 m/s

Seasonal Analysis for Umatac Zero (Wreck)
Alpha

Historical patterns and best seasons for diving at Umatac Zero (Wreck)

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 Umatac Zero (Wreck)

Winter

Avg. Score: 9.3/10

Winter offers the best overall diving conditions with calmer seas and better visibility, despite cooler temperatures.

Best Months for Umatac Zero (Wreck)

January
Score: 9.4
February
Score: 9.4
November
Score: 9.3

Ideal Conditions for Umatac Zero (Wreck)

Water Temp

Thermometer Emoji

27.2°C / 81.0°F

May

Visibility

Telescope Emoji

11.2m / 36.7ft

November

Wave Height

Wave Emoji

1.6m / 5.2ft

September

Wave Period

Wave Emoji

8.0s

January

Seasonal Insights for Umatac Zero (Wreck)

Umatac Zero (Wreck) shows typical northern hemisphere patterns with June being the warmest month (27.3°C) and January the coldest (22.5°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 0.7mm 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.

Scoring Legend:
9-10 (Excellent)
7-8 (Good)
5-6 (Average)
3-4 (Poor)
1-2 (Dangerous)

Last updated: 1 min. ago - Jun 23, 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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