According to
Amac News, the announcement came after Vieira met with Rio de Janeiro Mayor Eduardo Paes.
The decision follows the successful holding of the Group of 20 (G20) summit in the city last November.
Brazil has been chairing the BRICS since January 1 and is leading working groups to prepare the agenda and topics for the summit, which will bring together heads of state and government.
Vieira said he would welcome the leaders of the 20 countries that are full members and partners of BRICS. The foreign minister said Rio de Janeiro will once again be the scene of a major international gathering.
Mayor Paes, who has created a commission to oversee the organization of the event, said the BRICS summit will strengthen international relations and also promote cultural, trade and tourism exchanges.