White-sand beaches, 27°C turquoise water, the spice-scented lanes of Stone Town… Zanzibar, off the coast of Tanzania, ticks every box of the tropical dream. But the island lives to the rhythm of two rainy seasons: best to choose your dates wisely. Here is our calendar.
☀️ The dry season (June to October) — glorious weather
From June to October, the trade winds sweep the humidity away: blue skies, 25 to 29°C, a 25-26°C sea and superb light. This is THE ideal period, whether for sunbathing at Nungwi, diving the reefs of Mnemba or kitesurfing on the Paje lagoon.
Another golden window: January-February, between the two rainy seasons. It is hotter (30-32°C) and the sea climbs to 29-30°C — perfect if you are fleeing the European winter.
🌧️ The rainy seasons — know before you book
The "long rains" (masika) fall from March to May: long downpours, maximum humidity, and some hotels close. This is the period to avoid, even though prices melt away.
The "short rains" from November to mid-December are gentler: brief showers, often late in the day, dazzling vegetation and attractive rates. A smart move for tight budgets happy to pack a folding umbrella.
📊 Zanzibar month by month
| Period | Weather | Our view |
|---|---|---|
| January – February | Hot and dry, sea at 29-30°C | ★★★ Excellent |
| March – May | Long rains, high humidity | ★ Avoid |
| June – October | Dry, sunny, 25-29°C | ★★★ Ideal |
| November – December | Short rains, brief showers | ★★ Good value |
🏆 Our verdict
The best time for Zanzibar: June to October, peaking in July-September.
January-February is a superb alternative for an extended Christmas in the sun or a shorter winter.
Once there, don't miss Stone Town (UNESCO), a spice tour and a sunset dhow cruise. And if the Indian Ocean calls, follow up with our other favourite islands!
Indian Ocean fan? Also discover Mauritius, Réunion and Mayotte.
Explore the Indian Ocean →Keywords: Zanzibar when to goZanzibar weatherZanzibar rainy seasonTanzania travelIndian Ocean