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Inner Castle

Western Cape, South AfricaDirections
7mm or semi-dry + hood typical

Inner Castle at a glance

Inner Castle is a dive site in Western Cape, South Africa. Typically most favorable Apr · from 3 years of archive data. Recent reports put the water around 16°C (61°F). Check the latest conditions and entry details before you go.

Favorable window now· until 9:00, then moderate until 15:00

Forecast for this hour · 7:00 · run 12 h ago
1.3 m (4.1 ft)waves — about a meter and a half expected (waves — about four feet expected)

Tap a factor for its source and model point · Forecast 16°C · seasonal avg 16°C ( · Forecast 61°F · seasonal avg 61°F)

Dive windows this week

Lightest wind: Tue
Sun6:00–9:00 favorable, 9:00–15:00 moderate

1.4 m waves · 16 kn wind (4.4 ft waves · 16 kn wind)

Mon6:00–13:00 moderate, 15:00–20:00 moderate

1.4 m waves · 15 kn wind (4.7 ft waves · 15 kn wind)

Tue6:00–20:00 favorable

1.1 m waves · 7 kn wind (3.5 ft waves · 7 kn wind)

Wed6:00–11:00 favorable, 11:00–13:00 moderate, 13:00–17:00 favorable, 17:00–20:00 moderate

1.0 m waves · 11 kn wind (3.2 ft waves · 11 kn wind)

ThuNo window

2.4 m waves · 16 kn wind (7.8 ft waves · 16 kn wind)

FriNo window

2.1 m waves · 21 kn wind (6.9 ft waves · 21 kn wind)

SatNot in the forecast yet

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wave and wind forecasts. Numbers under each bar are daylight averages.

First light 5:25 · Sunrise 5:52 · Sunset 19:08 · some windows run past sunset

Source: Open-Meteo marine · model point 4.1 km from site · updated 24 Oct, 19:11 GMT+2

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Inner Castle

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. January, 31% of days have historically been favorable, water has typically been 18°C (65°F), waves have typically been 1.8 m (6.0 ft), wind has typically been 13 knots
  2. February, 25% of days have historically been favorable, water has typically been 19°C (65°F), waves have typically been 2.0 m (6.4 ft), wind has typically been 13 knots
  3. March, 32% of days have historically been favorable, water has typically been 17°C (63°F), waves have typically been 1.9 m (6.1 ft), wind has typically been 12 knots
  4. April, 33% of days have historically been favorable, water has typically been 16°C (61°F), waves have typically been 2.0 m (6.5 ft), wind has typically been 11 knots, historically most favorable
  5. May, 20% of days have historically been favorable, water has typically been 16°C (60°F), waves have typically been 2.3 m (7.5 ft), wind has typically been 10 knots
  6. June, 11% of days have historically been favorable, water has typically been 15°C (59°F), waves have typically been 2.5 m (8.3 ft), wind has typically been 11 knots
  7. July, 15% of days have historically been favorable, water has typically been 14°C (58°F), waves have typically been 2.7 m (8.8 ft), wind has typically been 10 knots
  8. August, 16% of days have historically been favorable, water has typically been 14°C (58°F), waves have typically been 2.6 m (8.5 ft), wind has typically been 10 knots
  9. September, 19% of days have historically been favorable, water has typically been 15°C (59°F), waves have typically been 2.3 m (7.6 ft), wind has typically been 12 knots
  10. October, 24% of days have historically been favorable, water has typically been 16°C (61°F), waves have typically been 2.0 m (6.5 ft), wind has typically been 12 knots
  11. November, 22% of days have historically been favorable, water has typically been 17°C (62°F), waves have typically been 2.0 m (6.5 ft), wind has typically been 13 knots
  12. December, 24% of days have historically been favorable, water has typically been 19°C (65°F), waves have typically been 2.0 m (6.4 ft), wind has typically been 12 knots

April has typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life recorded at this site, by month

Recorded observations — evidence of past sightings, not a promise of what you’ll encounter.

  • Cape Silvertip Flame recorded here May (1 record)

    Antiopella capensismost recent 2013

Newest record here: 2013. Counts are occurrence records near this site from public biodiversity datasets (GBIF), grouped by calendar month across all sampled years. Sightings vary — past records are context, not a prediction.

Fills & rentals nearby

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated July 2026

Site details

inshore dive site at Castle Rocks on the Cape Peninsula east coast

No hazards recorded for this site yet — that never means there are none. Ask a local operator before you dive.

Reviews

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