United States

Shag Rock

17–25 mMax Depth

boatEntry

21Species

Conditions Summary

Model forecast · local time (GMT-7)

Model conditions signal71/100

Waves

1.4 m

13.4 s

Swell

1.1 m

13.0 s

Current speed

0.5 km/h

flowing toward S

Water temperature

21.8°C

Wind

20.8 km/h

→ W

Sea level

0.5 m

falling

WavesChallenging

SwellWatch

Current speedCalm

Forecast Overview

Sun, Oct 18Challenging

Waves1.4–1.4 mCurrent speed0.9 km/h maxWater temperature21.7°C

Mon, Oct 19Challenging

Waves1.5–1.9 mCurrent speed1.2 km/h maxWater temperature21.6°C

Tue, Oct 20Challenging

Waves1.4–1.9 mCurrent speed0.8 km/h maxWater temperature21.4°C

TodayChallenging

Waves1.4–1.5 mCurrent speed1.0 km/h maxWater temperature21.4°C

Next 72 hours

17:00

Waves: 1.4 m

Current speed: 0.4 km/h

Water temperature: 21.8°C

23:00

Waves: 1.4 m

Current speed: 0.9 km/h

Water temperature: 21.6°C

05:00

Waves: 1.6 m

Current speed: 1.2 km/h

Water temperature: 21.4°C

11:00

Waves: 1.7 m

Current speed: 0.5 km/h

Water temperature: 21.6°C

17:00

Waves: 1.7 m

Current speed: 0.4 km/h

Water temperature: 21.8°C

23:00

Waves: 1.9 m

Current speed: 0.6 km/h

Water temperature: 21.4°C

05:00

Waves: 1.8 m

Current speed: 0.8 km/h

Water temperature: 21.3°C

11:00

Waves: 1.6 m

Current speed: 0.4 km/h

Water temperature: 21.3°C

17:00

Waves: 1.4 m

Current speed: 0.2 km/h

Water temperature: 21.6°C

23:00

Waves: 1.4 m

Current speed: 0.5 km/h

Water temperature: 21.4°C

05:00

Waves: 1.4 m

Current speed: 1.0 km/h

Water temperature: 21.4°C

11:00

Waves: 1.4 m

Current speed: 0.8 km/h

Water temperature: 21.4°C

Catalog depth17–25 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

Jul-Nov

Peak month

Aug 19.6°

Jan14.7°

Feb14.6°

Mar14.7°

Apr14.9°

May15.9°

Jun17.2°

Jul18.8°

Aug19.6°

Sep19.3°

Oct18.5°

Nov16.9°

Dec15.3°

Current: moderate

Typical visibility: 10 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

wallsalt Waterintermediate 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

California sea lion

Zalophus californianus

DeepLog11

Northern elephant seal

Mirounga angustirostris

DeepLog4

Bat star

Patiria miniata

DeepLog2

Egg yolk jelly

Phacellophora camtschatica

DeepLog2

Blacksmith

Chromis punctipinnis

DeepLog1

California black sea hare

Aplysia vaccaria

DeepLog1

California cone

Californiconus californicus

DeepLog1

California golden gorgonian

Muricea californica

DeepLog1

California scorpionfish

Scorpaena guttata

DeepLog1

C-O sole

Pleuronichthys coenosus

DeepLog1

Crested goby

Rhinogobiops nicholsii

DeepLog1

Garibaldi damselfish

Hypsypops rubicundus

DeepLog1

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

DeepLog + OBIS →

Photos