For Zanzibar :
No gale warning.
The reliability of the situation is good.
Storms developing in the morning, sun and storm clouds in the afternoon. Showers all day. In the evening, changeable skies with risk of storms.
Possibility of showers S wind force 4 continuing all day. Gusts reaching 19 knots in the evening. Slight sea. Low, short swell from ESE. Excellent visibility.