Stone Town in May

June through September brings the coolest temperatures and least humidity — perfect for wandering those narrow alleys without melting. The trade winds pick up, making rooftop dining actually pleasant. December through February works well too, though expect occasional short rains. March through May is the main rainy season with heavy downpours that can flood the old quarter's low-lying areas. October and November get uncomfortably humid with unpredictable weather. Ramadan affects the rhythm significantly — many restaurants close during daylight hours, though the evening iftar meals create a special atmosphere. The Zanzibar International Film Festival in July brings energy to the cultural scene, but also crowds and higher accommodation prices.