For Zanzibar :
No gale warning.
The reliability of the situation is good.
Sun but cloud increasing in the morning, very cloudy with possibility of thunder storms in the afternoon. Possibility of showers late in the morning, possibility of showers in the afternoon. In the evening, cloud and long sunny periods.
No precipitation. S force 3 in the morning turning SE in the evening. Gusts reaching 15 knots in the middle of the day. Slight sea. Low, short swell from ESE. Visibility reduced by mist becoming excellent in the middle of the day then good.