Guam

Univ. Of Guam Marine Lab

3–20 mMax Depth

shoreEntry

7Species

Conditions Summary

Model forecast · local time (GMT+10)

Model conditions signal71/100

Waves

2.1 m

7.7 s

Swell

1.4 m

6.8 s

Current speed

0.5 km/h

flowing toward W

Water temperature

28.6°C

Wind

23.5 km/h

→ SE

Sea level

0.7 m

falling

WavesChallenging

SwellWatch

Current speedCalm

Forecast Overview

Mon, Oct 19Challenging

Waves1.8–2.1 mCurrent speed1.6 km/h maxWater temperature28.6°C

TodayChallenging

Waves1.2–1.8 mCurrent speed1.6 km/h maxWater temperature28.5°C

TomorrowChallenging

Waves1.2–1.3 mCurrent speed2.1 km/h maxWater temperature28.5°C

Thu, Oct 22Challenging

Waves1.3–1.4 mCurrent speed1.9 km/h maxWater temperature28.4°C

Next 72 hours

18:00

Waves: 2.1 m

Current speed: 0.5 km/h

Water temperature: 28.6°C

00:00

Waves: 1.8 m

Current speed: 1.6 km/h

Water temperature: 28.5°C

06:00

Waves: 1.6 m

Current speed: 1.3 km/h

Water temperature: 28.4°C

12:00

Waves: 1.5 m

Current speed: 0.7 km/h

Water temperature: 28.5°C

18:00

Waves: 1.3 m

Current speed: 0.9 km/h

Water temperature: 28.7°C

00:00

Waves: 1.2 m

Current speed: 0.8 km/h

Water temperature: 28.5°C

06:00

Waves: 1.2 m

Current speed: 0.7 km/h

Water temperature: 28.4°C

12:00

Waves: 1.3 m

Current speed: 1.5 km/h

Water temperature: 28.5°C

18:00

Waves: 1.3 m

Current speed: 1.4 km/h

Water temperature: 28.6°C

00:00

Waves: 1.3 m

Current speed: 1.9 km/h

Water temperature: 28.4°C

06:00

Waves: 1.3 m

Current speed: 0.7 km/h

Water temperature: 28.3°C

12:00

Waves: 1.3 m

Current speed: 1.1 km/h

Water temperature: 28.4°C

Catalog depth3–20 m

Data sources & field guideOpen-Meteo Marine + Weather APIs

Planning context, not a safety guarantee. Coastal model accuracy is limited. Confirm the actual briefing, entry, exit, and suitability with a local operator.

Open-Meteo Marine + Weather APIs →

Dive readiness

Collecting the latest marine conditions and forecast signals.

Seasons · water temperature

12-month outlook

Best window

Jan-Jun

Peak month

Jul 29.4°

Jan27.9°

Feb27.6°

Mar27.7°

Apr28.1°

May28.8°

Jun29.3°

Jul29.4°

Aug29.4°

Sep29.4°

Oct29.3°

Nov29.0°

Dec28.4°

Current: mild

Typical visibility: 20 m

Historical planning data from the recorded site profile. Water temperature and conditions can vary by day, depth, and weather; confirm current conditions with a local operator.

Explore nearby centers on the map

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Dive Types

reefsalt Waterbeginner Difficulty

Questions to ask a local operator

What are today's current, visibility, entry, and exit conditions?
Does the planned route stay within my certification and recent experience?
Are there local permits, conservation rules, or equipment requirements?

Common Species

12 km · nearby observations

Plicate nerite

Nerita plicata

DeepLog2

Blackside hawkfish

Paracirrhites forsteri

DeepLog1

Bristle worm

Eurythoe complanata

DeepLog1

Eoacmaea chamorrorum

DeepLog1

Narrowlined toadfish

Arothron manilensis

DeepLog1

Pacific elkhorn coral

Acropora abrotanoides

DeepLog1

Snowflake moray

Echidna nebulosa

DeepLog1

Fivestripe wrasse

Thalassoma quinquevittatum

Nearby OBIS observations6

Striated surgeonfish

Ctenochaetus striatus

Nearby OBIS observations6

Brown surgeonfish

Acanthurus nigrofuscus

Nearby OBIS observations5

Orange-lined triggerfish

Balistapus undulatus

Nearby OBIS observations5

Orangespine unicornfish

Naso lituratus

Nearby OBIS observations5

These are nearby biodiversity records, not a guarantee that every species will be seen on a particular dive.

DeepLog + OBIS →

Photos