United States

San Juan Rocks

6–12 mMax Depth

shoreEntry

39Species

Conditions Summary

Model forecast · local time (GMT-7)

Model conditions signal81/100

Waves

0.9 m

13.8 s

Swell

0.9 m

12.6 s

Current speed

0.3 km/h

flowing toward NW

Water temperature

22.7°C

Wind

10.0 km/h

→ N

Sea level

0.3 m

WavesWatch

SwellWatch

Current speedCalm

Forecast Overview

Thu, Oct 15Watch

Waves0.9–0.9 mCurrent speed0.4 km/h maxWater temperature22.9°C

Fri, Oct 16Watch

Waves0.8–0.9 mCurrent speed0.4 km/h maxWater temperature22.9°C

Sat, Oct 17Watch

Waves0.9–1.0 mCurrent speed0.4 km/h maxWater temperature22.9°C

Sun, Oct 18Challenging

Waves1.0–1.0 mCurrent speed0.4 km/h maxWater temperature22.8°C

Next 72 hours

04:00

Waves: 0.9 m

Current speed: 0.2 km/h

Water temperature: 22.7°C

10:00

Waves: 0.9 m

Current speed: 0.4 km/h

Water temperature: 22.8°C

16:00

Waves: 0.9 m

Current speed: 0.4 km/h

Water temperature: 23.1°C

22:00

Waves: 0.9 m

Current speed: 0.2 km/h

Water temperature: 22.8°C

04:00

Waves: 0.9 m

Current speed: 0.3 km/h

Water temperature: 22.7°C

10:00

Waves: 0.8 m

Current speed: 0.2 km/h

Water temperature: 22.7°C

16:00

Waves: 0.8 m

Current speed: 0.4 km/h

Water temperature: 23.3°C

22:00

Waves: 0.8 m

Current speed: 0.3 km/h

Water temperature: 22.9°C

04:00

Waves: 0.9 m

Current speed: 0.4 km/h

Water temperature: 22.7°C

10:00

Waves: 0.9 m

Current speed: 0.4 km/h

Water temperature: 22.8°C

16:00

Waves: 0.9 m

Current speed: 0.4 km/h

Water temperature: 23.1°C

22:00

Waves: 1.0 m

Current speed: 0.3 km/h

Water temperature: 22.9°C

Catalog depth6–12 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

Jun-Oct

Peak month

Aug 20.7°

Jan15.1°

Feb15.0°

Mar15.2°

Apr15.7°

May17.0°

Jun18.5°

Jul20.2°

Aug20.7°

Sep20.5°

Oct19.3°

Nov17.6°

Dec15.8°

Current: mild

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

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

Purple sea hare

Aplysia californica

DeepLog16

Purple sea star

Pisaster ochraceus

DeepLog9

Giant keyhole limpet

Megathura crenulata

DeepLog8

California mussel

Mytilus californianus

DeepLog7

Sun anemone

Anthopleura sola

DeepLog7

California black sea hare

Aplysia vaccaria

DeepLog6

Purple urchin purple urchin

Strongylocentrotus purpuratus

DeepLog6

Volcano keyhole limpet

Fissurella volcano

DeepLog6

Owl limpet

Lottia gigantea

DeepLog5

Stenoplax conspicua

DeepLog5

Wavy turban

Megastraea undosa

DeepLog5

California sea lion

Zalophus californianus

DeepLog4

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

DeepLog + OBIS →

Photos