For Zanzibar :
No gale warning.
The reliability of the situation is good.
Clouding over with thunderstorms developing in the morning, skies clearing but storms likely in the afternoon. Light showers all day. In the evening, clear spells, risk of mist forming.
No precipitation. SE force 2 in the morning becoming ESE force 3 in the middle of the day. Gusts reaching 17 knots in the evening. Slight sea. Low, short swell from ESE. Visibility reduced by fog becoming excellent in the middle of the day then reduced by mist.