Zanzibar Town sits on the western shore of Unguja island, where centuries of trade between Africa, Arabia, India, and Europe have left their mark in carved wooden doors, coral stone buildings, and some of the most aromatic food in East Africa. The heart of it all is Stone Town, a UNESCO World Heritage Site whose labyrinth of narrow alleys opens onto spice markets, waterfront gardens, and rooftop terraces overlooking the Indian Ocean. Beyond the old town, white sand beaches stretch along the coast, spice plantations dot the interior, and boat rides to nearby islands bring you face to face with giant Aldabra tortoises and coral reefs full of marine life.
The best time to visit Zanzibar Town is early June through late October, when dry skies, comfortable breezes, and clear water create ideal conditions for exploring Stone Town on foot, snorkeling offshore reefs, and catching the Zanzibar International Film Festival and Mwaka Kogwa celebrations in July. A strong secondary window runs from late December through late February, coinciding with another dry stretch and the Sauti za Busara music festival in February, though humidity and temperatures run higher. If you're flexible, the June through October window edges ahead: rain is rare, winds keep the heat manageable, and the island's biggest cultural events cluster right in the middle of it.
Fall in Zanzibar Town, Tanzania
March through May is Zanzibar's long rainy season, and it shows. April is one of the wettest months, with roughly 44% of days bringing significant rainfall, and March follows close behind at 30%. Afternoon downpours can be heavy and sustained, flooding Stone Town's narrow alleyways and making some unpaved roads outside the city difficult to navigate. Highs average 87.6°F (30.9°C) and lows settle around 75.8°F (24.3°C), so the heat doesn't ease much between showers. Humidity peaks above 80% in April, wrapping the island in thick, sticky air that lingers well into the evening.
That said, the rain does bring benefits. The island turns intensely green, spice farms overflow with growth, and you'll find accommodation deals since tourism drops to its slowest levels of the year. A spice plantation tour through the farms outside Stone Town can actually be more vivid during this period, with clove, nutmeg, cinnamon, and vanilla plants at their most lush. May sees precipitation ease slightly to around 35% of days, and the tail end of the month starts the transition toward drier weather.
If you do visit during the long rains, plan indoor and covered activities for the afternoons: the Old Slave Market, the Old Fort, and the winding covered passages of the Darajani Bazaar are all fascinating rain-or-shine. Carry a compact umbrella and waterproof sandals, and be prepared for some beach days to be a washout. Prices for guesthouses and boutique hotels in Stone Town drop noticeably, which can stretch your budget further.
Winter in Zanzibar Town, Tanzania
This is when Zanzibar is at its best. June marks the start of the dry season, and by July, rainfall drops to just 5% of days, making it one of the driest stretches of the year. Highs average 85.1°F (29.5°C) with lows around 72.1°F (22.3°C), a comfortable range that feels even cooler thanks to the kaskazi trade winds that sweep across the island. Those steady breezes also make June through August the best months for kitesurfing at Paje Beach on the southeast coast, where consistent wind conditions draw riders from around the world.
July is packed with cultural events. The Zanzibar International Film Festival, East Africa's largest film and arts event, takes over the Old Fort in Stone Town with screenings, live performances, and workshops that spill out into the surrounding streets. Later in July, the Mwaka Kogwa festival in Makunduchi village celebrates the Shirazi (Persian) New Year with mock battles, bonfires, and traditional music over four days. The Forodhani Gardens night market runs year-round, but the dry season is the most pleasant time to linger at the waterfront stalls sampling grilled seafood skewers, Zanzibar pizza, and sugar cane juice while watching local kids dive off the seawall at sunset.
This is also peak tourist season, so expect higher accommodation rates and busier boat trips to Prison Island and Mnemba Atoll. Book snorkeling excursions and Stone Town guesthouses at least a few weeks in advance. Pack light, breathable clothing, reef-safe sunscreen, and a light layer for evening boat rides when the wind picks up.
Spring in Zanzibar Town, Tanzania
September and October extend the dry season's pleasant conditions, with only about 10% to 14% of days seeing significant rain. Highs average 87.9°F (31.1°C) and lows sit at 72.3°F (22.4°C), so temperatures climb slightly compared to winter but remain manageable. Crowds thin out noticeably after August, and accommodation prices drop to some of the lowest of the year, making this a smart window for budget-conscious travelers who still want reliable beach weather. The Zanzibar Beach and Watersports Festival typically takes place in September at Jambiani, featuring dhow races, beach sports, and live music along the southeast coast.
November changes the picture. The short rains arrive, pushing precipitation chances up to around 39% of days. Humidity rises and the winds die down, so the heat becomes more noticeable. Diving and snorkeling visibility can drop compared to the crystal-clear conditions of June through October, though underwater life is still abundant around Mnemba Atoll and the reefs off Changuu Island. Stone Town itself remains a compelling draw regardless of rain: the narrow alleys provide shade and shelter, and a cooking class focused on Swahili cuisine or an afternoon of Zanzibari spiced tea on a rooftop terrace doesn't require blue skies.
If you're visiting in September or early October, pack as you would for the dry season: light fabrics, sun protection, and sturdy sandals for reef walking. For November, add a rain jacket and waterproof bag for electronics.
Summer in Zanzibar Town, Tanzania
December through February brings a second dry window that starts around late December and holds through February. This is the hottest stretch of the year, with highs averaging 90.7°F (32.6°C) and overnight lows around 76°F (24.4°C). In mid-February, peak heat pushes highs to 92°F (33.3°C) with lows of 76.4°F (24.7°C), so expect sweat-through conditions during midday walks through Stone Town. December still carries some residual rain from the short rains (roughly 28% of days), but January and February dry out considerably to around 10% and 11% respectively.
February is a highlight for music lovers. The Sauti za Busara festival, one of East Africa's most celebrated music events, fills the Old Fort amphitheater in Stone Town with three days of live performances from over 400 artists spanning traditional taarab, Afrobeat, hip-hop, and more. The festival draws around 20,000 attendees and transforms Stone Town into a whirl of street parades and late-night concerts. Eid celebrations, when they fall during this period, add another layer of communal festivity: four days of visiting, feasting, and taarab concerts across the island. Since dates follow the Islamic calendar, check timing before your trip.
Tourism picks up in December with the holiday season but February remains one of the quietest months, so you'll find more availability and better rates than during the winter peak. The calmer seas make this a good window for dhow sunset cruises departing from Stone Town and dolphin-watching boat trips from Kizimkazi. Bring the lightest clothing you own, a wide-brimmed hat, and drink plenty of water throughout the day.
At a Glance
Monthly weather, visitor crowds, air quality, holidays, and daylight hours to help you plan your trip.
Travel Tips & Safety for Zanzibar Town, Tanzania
Most visitors fly into Abeid Amani Karume International Airport on Unguja, with direct connections from Dar es Salaam, Nairobi, and several regional hubs. Ferries from Dar es Salaam take roughly two hours and run multiple times daily. Within Stone Town, everything is walkable, but for trips to beaches like Nungwi, Paje, or Jozani Chwaka Bay National Park, hire a local driver or arrange transport through your hotel. Zanzibar is predominantly Muslim, so dress modestly when walking through Stone Town and villages: cover shoulders and knees, especially near mosques and during Ramadan.
Haggling is expected in markets and many shops. Vendors in Stone Town often start at two to three times the expected price, so negotiate respectfully but firmly. Carry cash in Tanzanian shillings for markets, small restaurants, and tips; US dollars are widely accepted for tours and accommodations but change is often given in shillings. Tipping guides, boat operators, and spice tour hosts is customary and appreciated.
Zanzibar is generally safe for travelers, but standard precautions apply: avoid walking alone through unlit areas of Stone Town late at night, keep valuables secure, and be cautious with unofficial tour operators who approach on the street. If you plan to swim or snorkel, wear reef shoes to protect against sea urchins, and always check tide conditions before wading out on the east coast, where the tidal range is dramatic.