The Indian Ocean & Southeast Asia

The Zanzibar Archipelago

Coral-stone Stone Town, clove-scented Pemba and a marine park off Mafia where whale sharks gather every season — three islands worked at anchor and tender, with no marina anywhere in the archipelago.

Jun – Oct & Dec – FebZNZ · Stone TownAnchor & tender, no marina

Zanzibar is three islands wearing one name. Unguja is the main island, the one everyone means when they say 'Zanzibar', coral-stone Stone Town at its heart. Pemba, greener and quieter, lies roughly seventy-five nautical miles north across its own channel and still supplies most of Tanzania's cloves. Mafia sits a longer reach south, ringed by a marine park where whale sharks gather every year. Nine centuries of Indian Ocean trade — dhows (the lateen-rigged sailing vessels of the old monsoon routes) running goods between Arabia, India and the Swahili coast, a Sultanate that once supplied most of the world's cloves — left Stone Town's coral-rag quarter a UNESCO World Heritage Site and its harbour still full of working sail. None of the three islands holds a superyacht marina: a hundred-berth development planned for the Zanzibar Amber Resort stalled when the government terminated the developer's land lease, and every charter here still runs on the older pattern — a yacht at anchor, tenders and a shallow-draft support boat doing the close work over reef and sandbank. Two dry windows frame the season: June to October under the firm Kusi, December to February under the calmer Kaskazi.

“At Nungwi, dhows are still built by eye and by memory, no drawings, each hull taking the better part of a year.”

Signature anchorages

Three islands, one older pattern: Stone Town for clearance and history, reef atolls in the shallows off Unguja, a channel crossing north to Pemba and a longer reach south to Mafia's whale sharks.

  • Stone Town & the port of MalindiThe archipelago's only port of entry — an open roadstead (an unmoored, open anchorage) off the UNESCO waterfront, sand bottom with reasonable holding but exposed to ferry wash and afternoon chop. A clearance stop more than an overnight; most charters push on the same day.
  • Mnemba AtollAn oval reef seven by four kilometres around a private islet off Unguja's northeast shoulder. The Mnemba Island Conservation Area charges a per-person entry fee and landing is by arrangement only, but the lee anchorage over sand holds well and shelters through both monsoons.
  • Nungwi & KendwaUnguja's north tip, clear of the tidal swing that empties other beaches at low water, and the archipelago's de facto small-craft charter base — a dozen-odd active yards still build dhows on this shore. Good depth close in, sheltered through the Kaskazi.
  • Chumbe Island Coral ParkA closed forest-and-reef reserve southwest of Stone Town, pre-booked visits only. Moorings rather than anchoring over the reef itself; the reward is a solar-converted 1904 lighthouse and a 132-step climb for the view.
  • Menai Bay & KizimkaziZanzibar's largest marine protected area at 470 square kilometres, shallow and reef-strewn along Unguja's southwest shore. Resident bottlenose and humpback dolphins off Kizimkazi; care needed over seagrass, better ground for a tender than a deep-draft yacht.
  • Pemba — Misali, Manta Point & Njao GapA channel crossing of roughly 75 nautical miles north from Stone Town into open water up to 1,000 metres deep. Wall diving to 90 metres at the Njao and Fundo gaps, a cleaning station at Manta Point — exposed anchorages, for settled weather and a capable tender.
  • Mafia — Chole BayThe island's original harbour and its one properly protected deep-water anchorage, good holding on the east side. Whale sharks gather in the marine park waters close by from October to March; the Chole Mjini ruins sit ashore on the bay's own islet.

The scene

Dhow yards, monsoon-season festivals, and a mosque older than any other dated building on the coast.

Craft heritage

The dhow yards of Nungwi

Around a dozen active shipyards still build dhows entirely by eye, with no drawings — timber, rope and kalafati (cotton soaked in coconut oil, hammered into the seams) the way it has been done for centuries. A single hull takes six months to a year.

Film festival

Festival of the Dhow Countries

The Zanzibar International Film Festival, founded in 1997 and East Africa's largest cultural event, screens upward of 150 films each year from the nations the monsoon once connected — Africa, the Gulf, India and the wider Indian Ocean rim.

Music festival · Feb

Sauti za Busara

'Sounds of Wisdom' — four days of pan-African music centred on the Old Fort, with fringe events across Stone Town; the 2026 edition ran 5–8 February.

Shirazi New Year · Jul

Mwaka Kogwa, Makunduchi

A centuries-old Persian-rooted new year rite in southern Unguja: men duel with banana stalks to clear old grudges, a healer burns a palm-frond hut and reads the smoke for the year ahead. Free and open to visitors, every July.

Landmark · 1107

Kizimkazi Mosque

A Kufic (an early angular Arabic script) inscription beside the mihrab (the wall niche marking the direction of prayer) dates this mosque to 1107 — the oldest inscribed date anywhere on the Swahili coast, in a building still standing at Unguja's southern tip.

Landmark

Prison Island tortoises

Changuu, a short tender from Stone Town, held Aldabra giant tortoises gifted from the Seychelles in 1919; poaching had cut the colony to seven adults by 1996, and conservation work has since rebuilt it to several hundred, free-roaming.

Table & stay ashore

A rooftop in a nineteenth-century merchant's mansion, a restaurant on a tidal rock, and beds ranging from a coral atoll to four metres under the Pemba Channel.

Restaurant

Emerson Spice, Tea House Restaurant

A rooftop with a 360° view over Stone Town and the Indian Ocean, inside the restored 1870s residence of Tharia Topan, financial advisor to Sultan Barghash. Seafood-led tasting menu, Swahili-style seating on the roof at sunset.

Restaurant

The Rock, Michamvi

A seafood restaurant built onto a single tidal rock off Pingwe Beach, open since 2010; walk out at low tide, boat at high — both a short tender from an east-coast anchorage.

Stay

Park Hyatt Zanzibar

Built into Mambo Msiige, a UNESCO-listed 1847 Zanzibari mansion on Stone Town's waterfront, joined to a contemporary wing since opening in 2015 — the clearance anchorage at Malindi within sight of the terrace.

Stay

&Beyond Mnemba Island

Twelve open-sided bandas (simple lodge cottages) beneath casuarina trees on a 1.5km private islet, the reef a few steps from the door and green turtles nesting on the beach through the season.

Stay

The Manta Resort, Pemba

Home to the Underwater Room, a floating three-level suite moored 250 metres off the Pemba Channel Conservation Area with a bedroom four metres below the surface — a night among reef fish rather than under them.

Stay

Chole Mjini Lodge, Mafia

Treehouse rooms built into the forest canopy above the ruins of a nineteenth-century Swahili and Omani trading town on Chole Island, inside Chole Bay — no electricity, no shoes, whale shark season on the doorstep.

A week, sketched

Day 1

Stone Town

Clear customs and immigration at the port of Malindi, provision, and step ashore into the UNESCO old town before the light goes — the Old Fort, Forodhani Gardens' night market, and the house on Shangani Street now kept as the Freddie Mercury Museum.

Day 2

Menai Bay & Kizimkazi

South down Unguja's coast into the conservation area for bottlenose and humpback dolphins working the shallows, then ashore at Kizimkazi for the mosque whose Kufic inscription dates it to 1107.

Day 3

Chumbe Island Coral Park

A short hop to the closed reef reserve for a pre-booked snorkel and the climb up its solar-converted 1904 lighthouse, then out at day's end for the overnight run south to Mafia.

Day 4

Chole Bay, Mafia

Land at Mafia's one true deep-water anchorage, check into the marine park, and tender across to the Chole Mjini ruins — a nineteenth-century trading town now half-lost in the forest of its own islet.

Day 5

Whale sharks, Mafia Island Marine Park

A full day out with a licensed local guide boat inside the whale shark grounds — October to March, busiest November to February — the tender working alongside under a strict code of conduct: minimum distances, no touching, one boat in the water at a time.

Day 6

Passage north to Nungwi

The long run back past Stone Town to Unguja's north tip, where a dozen-odd yards still build dhows by eye and no drawings, and the beaches at Nungwi and Kendwa hold their sand at any state of tide.

Day 7

Mnemba & Stone Town

A last morning over Mnemba's reef before the short run back to Malindi to disembark, Stone Town's coral-stone skyline closing the week where it opened.

SeasonJun–Oct & Dec–Feb
Water temp26–29°C
Prevailing windKusi (SE) Jun–Oct · Kaskazi (NE) Dec–Mar
Superyacht baseNone — anchor & tender; Malindi clears customs
Reach from Stone TownPemba ~75nm N · Mafia ~110nm S

Pair with

Read on: WAKE — the magazine · the guides · the glossary

Plan this water

The Zanzibar Archipelago

Stone Town's UNESCO waterfront, Pemba's clove hills and reef walls, and Mafia's whale sharks — three islands cruised at anchor with no marina in sight, June to October and December to February.

The year, measured

Monthly means at the heart of this water — daily maxima averaged, wind as mean daily peak.

JanFebMarAprMayJunJulAugSepOctNovDec
Air, day °C323232292828272828293031
Sea °C292929292828262627282830
Wind, peak kt1110101012131412121199

ERA5 reanalysis via Open-Meteo · 2019–2023 means · sea temperature 2022–2023

The yachts that run these waters

Profiles from the record — introductions via the harbour desk.

Read on: WAKE — the magazine · the guides · the glossary