For Zanzibar :
No gale warning.
The reliability of the situation is good.
Skies changeable to very cloudy. Risk of showers in the morning, possibility of showers in the afternoon. In the evening, skies with few clouds.
SSE wind force 3 continuing all day. Gusts reaching 18 knots in the evening. Slight sea becoming moderate in the middle of the day. Low, fairly long swell from ESE. Visibility reduced by mist becoming excellent in the middle of the day then poor.