For Zanzibar :
No gale warning.
The reliability of the situation is very good.
Good clear periods but lots of cloud, too. Chance of light rain. In the evening, cloud and long sunny periods.
No precipitation. SSE wind force 4 from the middle of the day. Gusts reaching 21 knots in the middle of the day. Slight sea. Low, short swell from ESE. Excellent visibility becoming excellent in the evening.