KwaZulu-Natal

KwaZulu-Natal's coastline runs roughly 600 kilometres from the Mozambique border in the north to the Eastern Cape boundary near Port Edward in the south, facing east and southeast into the Indian Ocean. The tidal regime is semidiurnal and significantly larger than most of southern Africa's Atlantic coast: mean spring range at Durban runs 1.6 to 1.9 metres, enough to shift break character at beach surf spots, expose beachrock reef at low water, and govern the timing of ski-boat launches across the Umgeni and Mgeni river bars. The defining oceanographic feature of this coast is the Agulhas Current, one of the strongest boundary currents in the world, flowing southwest at 1.5 to 2.5 knots close inshore south of the Durban Bight. North of the Bight the flow is more variable, but south toward Amanzimtoti, Scottburgh, and Port Shepstone, the Agulhas is a constant — it concentrates baitfish schools in its temperature boundaries, which in turn attract the billfish (marlin, sailfish) and yellowfin tuna that support KwaZulu-Natal's offshore charter industry. The current's proximity to shore is one reason this coast holds some of the densest shark populations in the Indian Ocean: the KwaZulu-Natal Sharks Board has maintained shark nets and drumlines along the beaches since 1952, and those nets are checked and serviced on tidal cycles that govern the boat work. The Durban Bight is a natural indentation sheltered on the south by the Bluff, a prominent headland that deflects the dominant south and southeast swells and creates calmer water in the Inner Bight near the harbour entrance. The port of Durban is one of the busiest container ports in Africa, and the harbour mouth — between the Bluff and the North Pier — carries significant commercial and recreational marine traffic on tidal cycles. The beachrock reef exposed at low water along the Golden Mile and at Ansteys and Addington beaches south of the piers is a signature feature: the calcified former beach surface creates reef habitat for fish, fishing platforms for anglers, and snorkelling ground across the lower tidal stages. South African National Hydrographer (SANH) tide tables, published by the South African Navy, are the authoritative reference for KwaZulu-Natal coastal timing. Open-Meteo Marine provides a useful planning base; SANH tables should be the check for any commercial or safety-critical use.