The reality show, which was dropped by Channel 4 last year, will return with a star-studded lineup on its new home.
Airing for one-and-a-half hours, the launch night will feature Brian Dowling introducing a selection of famous housemates, who will be spending the next month living together in the famous Big Brother compound.
Emma Willis's all-new spinoff show Bit On The Side will follow immediately after at 10.30pm and will air for an hour.
The first highlights show will air on Friday, August 19 for one hour. After an episode of Gavin Henson's new reality series The Bachelor, the second episode of Bit On The Side will follow at 11.05pm.
OK!TV will have a 'When Bruv Takes Over' special on Channel 5 at 6.25pm on Wednesday, August 17.
Pamela Anderson, Crystal Harris, Jedward, Amy Childs, Steve Strange and Kerry Katona are among the celebrities rumoured to be taking part.
Watch the Channel 5 Big Brother trailer below: