For Zanzibar :
No gale warning.
The reliability of the situation is good.
Stormy but improving progressively during the morning, sun and storm clouds in the afternoon. Heavy showers weakening in the afternoon. In the evening, changeable skies with risk of storms.
Possibility of showers SSE force 5 in the morning becoming SE force 4 in the evening. Gusts reaching 25 knots in the morning. Moderate sea. Low, short swell from ESE then moderate in the evening. Excellent visibility.