San Juan Rocks

United States

San Juan Rocks

6–12 mMax Depth
shoreEntry
39Species

Conditions Summary

Model forecast · local time (GMT-7)

Planning signal62/100
Waves
1.6 m
13.2 s
Swell
1.5 m
11.3 s
Current speed
0.8 km/h
flowing toward SE
Water temperature
23.9°C
Wind
11.3 km/h
→ W
Sea level
1.0 m
falling
WavesChallenging
SwellChallenging
Current speedCalm

Forecast Overview

Sat, Sep 5Challenging
Waves1.6–1.6 mCurrent speed0.9 km/h maxWater temperature23.8°C
TodayChallenging
Waves1.6–1.9 mCurrent speed0.6 km/h maxWater temperature23.3°C
TomorrowChallenging
Waves1.6–1.9 mCurrent speed0.6 km/h maxWater temperature23.2°C
Tue, Sep 8Challenging
Waves1.3–1.6 mCurrent speed0.9 km/h maxWater temperature23.1°C
Next 72 hours
17:00
Waves: 1.6 m
Current speed: 0.8 km/h
Water temperature: 23.9°C
23:00
Waves: 1.6 m
Current speed: 0.7 km/h
Water temperature: 23.6°C
05:00
Waves: 1.7 m
Current speed: 0.2 km/h
Water temperature: 23.4°C
11:00
Waves: 1.8 m
Current speed: 0.3 km/h
Water temperature: 23.3°C
17:00
Waves: 1.9 m
Current speed: 0.4 km/h
Water temperature: 23.4°C
23:00
Waves: 1.9 m
Current speed: 0.4 km/h
Water temperature: 23.1°C
05:00
Waves: 1.9 m
Current speed: 0.4 km/h
Water temperature: 22.9°C
11:00
Waves: 1.7 m
Current speed: 0.4 km/h
Water temperature: 23.3°C
17:00
Waves: 1.7 m
Current speed: 0.3 km/h
Water temperature: 23.4°C
23:00
Waves: 1.6 m
Current speed: 0.6 km/h
Water temperature: 23.1°C
05:00
Waves: 1.5 m
Current speed: 0.8 km/h
Water temperature: 22.9°C
11:00
Waves: 1.3 m
Current speed: 0.7 km/h
Water temperature: 23.2°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

Data source & current conditions

Profile facts were imported from DeepLog. ScubaProof adds nearby-center links and presents the recorded fields without treating missing data as confirmation. Conditions, access, permits, and site suitability can change; confirm them with a local operator before diving.

View the source profile →

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

San Juan Rocks photo 2
San Juan Rocks photo 3
San Juan Rocks photo 4
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