For Zanzibar :
No gale warning.
The reliability of the situation is very good.
Skies very cloudy, risk of thundery outbreaks during the afternoon. Risk of showers in the morning, possibility of showers in the afternoon. In the evening, cloudy spells, sometimes dense.
Chance of light rain. WSW force 2 turning SSW in the middle of the day then ENE. Gusts reaching 9 knots in the morning. Smooth to slight sea. Low, short swell from E. Poor visibility becoming excellent in the middle of the day then poor.