Is September a good time to visit Zanzibar?

Yes — September is dry and sunny with clear, calm seas and excellent diving. The trade winds begin to ease, and it sits in the reliable mid-year dry season.

How warm is Zanzibar in September?

Daytime highs are around 29°C (84°F), warming gently through the month, with comfortable nights near 22°C (72°F) and very little rain.

The weathered stone ramparts of the Old Fort in Stone Town, Zanzibar, under a blue sky.

Zanzibar Weather

Zanzibar Weather in September

Zanzibar weather in September — dry, sunny, and warming gently as the trade winds ease, with clear seas and great diving before the high-season peak passes.

Zanzibar weather in September at a glance

September is a dependable dry-season month. Skies stay clear, rainfall is minimal, and the southeast trade winds start to soften, leaving warm, sunny days and increasingly calm seas around the island.

Temperature and sea

Daytime highs sit around 29°C (84°F) and rise gently as the month goes on, with nights near 22°C (72°F). The Indian Ocean is warm at about 26°C (79°F) and clear, giving superb diving and snorkelling visibility around Mnemba Atoll.

Wind and rainfall

Rain remains rare in September. The trade winds ease compared with July and August, so the east-coast beaches calm down while still offering good conditions for water sports earlier in the month.

Should you visit in September?

September is one of the best all-round months: dry, sunny, and a little less crowded than the July–August peak, with prices beginning to ease. It is ideal for diving, beach days, and exploring Stone Town in comfortable warmth. Book ahead and bring sun protection.

Frequently asked questions

Is September a good time to visit Zanzibar?: Yes — September is dry and sunny with clear, calm seas and excellent diving. The trade winds begin to ease, and it sits in the reliable mid-year dry season.
How warm is Zanzibar in September?: Daytime highs are around 29°C (84°F), warming gently through the month, with comfortable nights near 22°C (72°F) and very little rain.