Why tidal pools
Cape Town's ocean is cold and often rough. The peninsula's string of tidal pools — natural rock pools walled for safe swimming — are the local answer: calm, free, and warmer than the open sea. They're where Capetonians actually swim, and they're the right call for families and anyone who doesn't want to body-surf in 12°C water.
The ones worth knowing
St James and Dalebrook on the False Bay side — the classic ones, warmer (Indian Ocean), busy in summer, worth the short train ride from the city. Camps Bay tidal pool on the Atlantic side — stunning, colder, quieter before noon. Milton and Wooley's further south for a more local crowd. In Hermanus, the tidal pool at Grotto Beach is a post-whale-watching swim.
When
Low tide and mid-morning — the pools are cleanest and warmest then, and you avoid the after-school rush. Avoid after heavy rain (storm runoff). The Atlantic ones are cold year-round; the False Bay ones are swimmable from October to April.
Bring
Sunscreen (there's no shade), water shoes (the rocks are sharp), and the understanding that a tidal pool is a community facility, not a resort — no lifeguard, bring a friend, watch children. They're simple, and that's the point.