If you planning to travel to Prison Island, Zanzibar, Tanzania, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 3:15 AM. The temperature feels like 83.05 with a humidity level of 68 so dress accordingly. Cloud coverage is 4 percent with visibility at 14.9 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling southeast at a speed of 9 MPH. At the end of the day don’t miss the sunset at 3:18 PM.