For Zanzibar :
No gale warning.
The reliability of the situation is good.
Good clear periods but with plenty of cloud in the morning, predominantly sunny in the afternoon. Risk of some spots of rain in the morning, no precipitation in the afternoon. In the evening, light cloudy spells.
SE wind force 3 continuing all day. Gusts reaching 17 knots in the evening. Slight sea. Low, short swell from ESE. Good visibility becoming excellent in the middle of the day then poor.