East Africa (Tanzania & Zanzibar)

The southeast trades blow steadily across this stretch of the Indian Ocean from June through September, delivering fifteen to twenty-five knots on a broad reach as you work northward between Dar es Salaam and the Zanzibar Channel. The sea is a particular shade of blue-green that shifts to pale turquoise over the coral heads, and the smell of cloves and salt hits you well before you make landfall.

Sailing these waters means sharing the channel with traditional ngalawa outriggers and larger jahazi dhows whose rigs haven't changed in centuries — give them room and watch how they read the wind, because they're very good at it.

Stone Town on Unguja is the obvious first stop: clear customs at the small port office, provision from the Darajani market, and anchor off town overnight before the dhow traffic picks up at dawn. Pemba, two days' sail north, rewards the effort — the channel approach demands careful pilotage over the fringing reef, but the anchorages at Wete and Mkoani are sheltered and almost empty.

South of Zanzibar, Mafia Island sits inside a biosphere reserve; anchoring in Kilindoni Bay gives you access to world-class snorkelling and a village fish market that opens at five in the morning.

Bareboat charter options remain limited — most reputable operators run skippered boats out of Dar es Salaam or Zanzibar Town, which is genuinely sensible given unmarked coral heads and shifting sandbanks that don't always match the charts. Provisioning in Dar is solid; fuel availability at outstations is less reliable, so carry jerrycans.

Tanzania visa-on-arrival is straightforward, but Zanzibar has a separate immigration stamp and officials expect you to ask for it.

June to August is the sweet spot; avoid the long rains of April–May, and anyone without reef navigation experience should book a skipper without hesitation.