He will address the country Tuesday, which has been declared a national holiday, the official Qatar News Agency reported.
The emir has confirmed to family members he will step down in favor of his second son, Tamim bin Hamad al-Thani, 33, the broadcaster al-Jazeera, based in Qatar, said.
Hamad, 61, has been in power since 1995, and Qatar has grown into an important player in regional and international politics during his reign, al-Jazeera said.
Wisconsin business offering 'therapeutic cuddling' forced to close
Costly malfunction causes beer flood at Boston-area brewery