For Zanzibar :
No gale warning.
The reliability of the situation is very good.
Skies changeable with risk of thundery outbreaks developing. Light showers all day. In the evening, relatively clear skies becoming changeable.
Chance of light rain. SSW force 4 in the morning turning SSE force 5 in the middle of the day. Gusts reaching 23 knots in the evening. Slight sea. Low, short swell from ESE. Excellent visibility.