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Castor Rock reef — Wikimedia Commons | License: CC-BY-SA-3.0 | Source: http://commons.wikimedia.org/wiki/Special:FilePath/Striped%20anemones%20and%20red%20chested%20cucumbers%20at%20Castor%20Rock%20DSC00878.JPG

Castor Rock Northern Pinnacle

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

Castor Rock Northern Pinnacle at a glance

Castor Rock Northern Pinnacle 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 (60°F). Check the latest conditions and entry details before you go.

Moderate window now· until 20:00 · sunset 19:06

Forecast for this hour · 6:00 · run 11 h ago
2.1 m (7.0 ft)waves — about two meters expected (waves — about seven feet expected)

Tap a factor for its source and model point · Forecast 16°C · seasonal avg 16°C ( · Forecast 60°F · seasonal avg 61°F)

Dive windows this week

Fri6:00–20:00 moderate

1.9 m waves · 8 kn wind (6.4 ft waves · 8 kn wind)

Sat6:00–20:00 favorable

1.3 m waves · 7 kn wind (4.3 ft waves · 7 kn wind)

Sun6:00–8:00 moderate

1.7 m waves · 20 kn wind (5.6 ft waves · 20 kn wind)

MonNo window

1.7 m waves · 22 kn wind (5.5 ft waves · 22 kn wind)

Tue6:00–7:00 moderate, 7:00–20:00 favorable

1.2 m waves · 7 kn wind (3.9 ft waves · 7 kn wind)

Wed6:00–14:00 favorable, 14:00–16:00 moderate, 16:00–20:00 favorable

0.9 m waves · 7 kn wind (3.0 ft waves · 7 kn wind)

ThuNot 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 5:28 · Sunrise 5:54 · Sunset 19:06 · some windows run past sunset

Source: Open-Meteo marine · model point 3.3 km from site · updated 22 Oct, 19:18 GMT+2

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Castor Rock Northern Pinnacle

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

No recorded sightings data for this site yet. Species lists appear as GBIF records and diver reports accumulate.

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

offshore dive site in Simon's Bay off 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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