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Castle Rock Beach
Castle Rock Beach is a tiny, tucked-away gem near Clontarf — just 30 metres of sand sheltered from the open water, with a striking freestanding boulder sitting right in the shallows. You anchor off and swim in — the calm, protected conditions make it one of the nicer dips on the Spit. It's the kind of spot that feels like a secret even when you know about it.
Marinas and anchorages near Castle Rock Beach · times are dock to dock
Based on AIS data
quiet → busy
Popular Times
How full it gets, by local hour — tallest when the most boats are here.
00:0006:0012:0018:0023:00
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Tue
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Sun
- Busiest on Saturdays and Sundays
- Fullest around 14:00, emptiest around 09:00
- Half the boats arrive by 13:00
- 21% of visits are overnight
- Typical day stop: ~3h · max recorded 10 boats
Plan a Passage
Popular
24 legs boats have actually been recorded sailing.
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