South Africa

Castle Rock

8–25 mMax Depth

boatEntry

45Species

Conditions Summary

Model forecast · local time (GMT+2)

Model conditions signal71/100

Waves

1.5 m

8.4 s

Swell

1.4 m

7.3 s

Current speed

1.3 km/h

flowing toward W

Water temperature

15.8°C

Wind

5.1 km/h

→ W

Sea level

-0.6 m

falling

WavesChallenging

SwellWatch

Current speedCalm

Forecast Overview

Tue, Oct 20Challenging

Waves1.5–2.2 mCurrent speed1.3 km/h maxWater temperature15.5°C

TodayChallenging

Waves2.3–2.7 mCurrent speed0.7 km/h maxWater temperature15.2°C

TomorrowChallenging

Waves2.0–2.2 mCurrent speed0.4 km/h maxWater temperature15.8°C

Fri, Oct 23Challenging

Waves2.0–2.0 mCurrent speed0.2 km/h maxWater temperature16.2°C

Next 72 hours

03:00

Waves: 1.5 m

Current speed: 1.3 km/h

Water temperature: 15.8°C

09:00

Waves: 1.5 m

Current speed: 0.9 km/h

Water temperature: 15.6°C

15:00

Waves: 1.7 m

Current speed: 0.4 km/h

Water temperature: 15.5°C

21:00

Waves: 2.0 m

Current speed: 0.2 km/h

Water temperature: 15.2°C

03:00

Waves: 2.5 m

Current speed: 0.4 km/h

Water temperature: 15.1°C

09:00

Waves: 2.7 m

Current speed: 0.7 km/h

Water temperature: 15.1°C

15:00

Waves: 2.5 m

Current speed: 0.5 km/h

Water temperature: 15.3°C

21:00

Waves: 2.3 m

Current speed: 0.4 km/h

Water temperature: 15.4°C

03:00

Waves: 2.2 m

Current speed: 0.3 km/h

Water temperature: 15.4°C

09:00

Waves: 2.1 m

Current speed: 0.2 km/h

Water temperature: 15.5°C

15:00

Waves: 2.0 m

Current speed: 0.4 km/h

Water temperature: 16.1°C

21:00

Waves: 2.0 m

Current speed: 0.2 km/h

Water temperature: 16.3°C

Catalog depth8–25 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

Oct-Apr

Peak month

Jan 18.6°

Jan18.6°

Feb18.6°

Mar17.7°

Apr16.4°

May16.0°

Jun15.6°

Jul15.0°

Aug14.9°

Sep15.2°

Oct15.7°

Nov16.9°

Dec18.0°

Current: moderate

Typical visibility: 12 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

Loading…

Dive Types

pinnaclereefsalt 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

Tambja capensis

DeepLog7

Super klipfish

Clinus superciliosus

DeepLog6

Crowned nudibranch

Polycera capensis

DeepLog4

False plum anemone

Pseudactinia flagellifera

DeepLog4

Speckled klipfish

Clinus venustris

DeepLog4

Warty pleurobranch

Pleurobranchaea bubala

DeepLog4

Cape dorid

Hypselodoris capensis

DeepLog3

Dark shyshark

Haploblepharus pictus

DeepLog3

Octopus

Octopus vulgaris

DeepLog3

Red stumpnose seabream

Chrysoblephus gibbiceps

DeepLog3

Roman seabream

Chrysoblephus laticeps

DeepLog3

Clinus arborescens

DeepLog2

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

DeepLog + OBIS →

Photos