To help plan your visit to Zanzibar, here's an overview of upcoming festivals and events on the island. This is by no means an exhaustive list, so if you are thinking of heading to Zanzibar outside of these dates and want to know what's on, check the Tanzania Tourism site for more information.
February 11th-14th -
Sauti za Busara (Stone Town)
July 23rd/24th -
Mwaka Kogwa (various locations)
ZIFF (venues across the island)
August TBC -
Jahazi Jazz & Literary Festival (Stone Town)
November 26th-29th -
Zanzibar Beach and Watersports Festival (Jambiani)
There's also a number of national holidays in Zanzibar and on these dates many businesses and some tourist sites will close for the day so plan your visit accordingly.