Inhambane Province

Inhambane Province stretches for roughly 500 km along Mozambique's central Indian Ocean coast, from the Save River mouth in the north to the border with Gaza Province in the south. The province contains Inhambane Bay, the Inhambane Peninsula, and the coral-reef systems that make this stretch of coast one of the most internationally recognised marine tourism destinations in Africa. The peninsula towns of Tofo and Barra draw dive tourism from across the world; Vilankulo, at the northern end of the province, is the gateway to the Bazaruto Archipelago National Park. The tidal regime along the Inhambane coast is macrotidal semidiurnal, consistent with the broader Mozambique Channel pattern. Spring range is around 3.5 m; neap range drops to approximately 1.7 m. Two broadly similar highs and lows per day. The combination of large range and shallow coastal bathymetry produces pronounced intertidal exposure — the sandflats in front of Tofo beach widen by 200 m or more on a spring low, and the dhow harbour at Vilankulo dries partially at the lowest tides. These are not tidal differences that affect only those who measure them; they determine when boats can leave, when reefs are accessible, and where the beach is. The whale shark concentration at Tofo is driven by the structure of the continental shelf here: the shelf is wide and relatively shallow, with cold upwelled water from the south mixing with warm equatorial water to concentrate plankton. The whale sharks feed at and near the surface year-round, with peak numbers from October to March. Manta rays aggregate at Manta Reef offshore, taking advantage of the tidal current that concentrates zooplankton on the rising flood. The Inhambane Bay crossing — between Maxixe on the mainland and Inhambane town on the peninsula — is one of the most atmospheric short passages on the east African coast: traditional ngalawa dhows cross the 3 km of bay on wind and tide, running the flood and anchoring for the ebb. At Vilankulo, the departure point for the Bazaruto Archipelago, tidal planning is practical logistics. The channel between the mainland and Bazaruto Island shoals in several places to less than 0.5 m at chart datum; boats depart on the flood and return on the ebb or high water, and the captains at the dhow harbour read the state of the water from the exposed sandbank markers in the bay rather than from a tide clock. Instituto Nacional de Hidrografia e Navegação (INAHINA) publishes the authoritative Mozambican tide tables. Predictions on TideTurtle come from Open-Meteo Marine, a gridded global ocean model; accuracy is typically within plus or minus 45 minutes on timing and 0.2 to 0.3 m on height above chart datum.