The downpour brought the life in the city and outskirts to a standstill. Low-lying areas were inundated while traffic was thrown out of gear.
As many as four children were among those killed in the incidents of wall or house collapse.
A couple and their two children were killed when a boundary wall of a building fell on their hut in Ramanthapur area.
In another incident in Bholakpur, a woman and her two daughters were killed when the roof of their house collapsed.
Greater Hyderabad Municipal Corporation (GHMC) has opened a helpline and pressed its emergency squads into service to clear waterlogging.
In view of heavy downpour in and around Hyderabad, citizens can reach @GHMCOnline Emergency Call Center at 040 21111111 or 100 for help.— Min IT, Telangana (@MinIT_Telangana) August 31, 2016
Busy roads have turned into cesspools with overflowing manholes and storm water drains.
GHMC commissioner Janardhan Reddy appealed to people not to venture out of their houses.