Six of the people who died were killed by lightning.
State officials said 8,681 families were moved to safer places following the heavy rains over the state's southern coastal area and the Telangana region.
The meteorological department has predicted more rains over the next 24 hours and warned people not to venture near rivers.
Andhra Pradesh Chief Minister Y.S Rajasekhar Reddy examined the relief work Saturday and ordered supplies of food, drinking water and medical equipment for the affected areas.