'Unfortunately it is not realistic to aim for a 72-hole tournament so we are going to restart tomorrow morning and declare a winner after 54 holes,' said tournament director Miguel Vidaor. 'These are some of the biggest storms I have ever witnessed. The players know it is going to be a 54-hole tournament so we will have a worthy winner.'
South Africa's Darren Fichardt is on top at 14-under 128 after a second-round 61. That score would have broken the course record of 63 set last year by Matthew Blackey, but Friday's round was contested under preferred lies. Fichardt, who has not hit a shot since lunchtime on Friday, will be in search of his first win on the European Tour.
Brett Rumford is alone in second at 11-under and Jose Coceres is a shot further at minus 10.
Christopher Hanell is in fourth at 9-under-par and Nic Henning has sole possession of fifth at 8-under 134.
Thirteen players began their third round and those players will resume what is now their final round on Sunday.
Click here for full-field scores from the Sao Paulo Brazilian Open