For Zanzibar :
No gale warning.
The reliability of the situation is very good.
Cloud and sun in the morning, skies clearing but storms likely in the afternoon. Risk of showers in the morning, possibility of showers in the afternoon. In the evening, changeable skies with risk of storms.
Possibility of showers SSW force 4 in the morning becoming S force 3 in the evening. Gusts reaching 19 knots in the morning. Slight sea. Low, short swell from SE. Excellent visibility becoming poor in the evening.