After enduring wet weather in the opening Friday practice session for the 2012 Belgian Grand Prix the Williams F1 team would again be presented with further rain as the second Friday practice got underway. Ferrari had replaced Massa's engine after his first practice session failure. With the opening of the pit lane there was no rush to take to the track. Bruno Senna was again back for this session seeing Valtteri Bottas watching proceedings from the rear of the Williams garage. With thirty minutes of the session completed there had been no activity and the weather conditions were not expected to change.

Forty two minutes remaining and still the weather played havoc but finally we would see a car come out with Rosberg coming out. As he went around the lap it showed how much standing water there was. He would complete his lap returning to the pit lane where he would stop at his pi and then continue back out. Schumacher and Kovalainen would also come out as Rosberg pitted. Kovalainen would spin at Le Combes as Rosberg returned to the track. Both Schumacher and Kovalainen would pit with Schumacher coming back out. Rosberg would pit going back into his garage. Schumacher would pit seeing the track empty with just over thirty minutes remaining in the session. Schumacher would come back out pitting after one lap. Hamilton and Hulkenberg would also come out joined by Vettel. Schumacher had pitted being wheeled into his garage.

HRT had announced that their cars would not be running in the session. Hulkenberg would pit but would come back out. Button would join team-mate Hamilton with twenty minutes remaining. Hamilton would pit followed by Hulkenberg. Despite all the activity no times were being set. Everyone would pit but Button would come back out followed by Vettel. Massa was next out and after completing a lap Vettel and Button would pit. Massa would also come in with fourteen minutes remaining, returning to the track. For Williams Bruno and Pastor would get ready to go out as Massa again pitted. Bruno would be first to come out for what would be an exploratory lap. Bruno would pit after one lap with six minutes remaining, coming back out. Pastor would also take to the track joined by Glock. Both Sauber's also also come out joined by Pic.

Pastor and Bruno would pit running through the pit lane and again returning to the track. Alonso would also come out joined by Vergne, Di Resta, and Hulkenberg. Ricciardo would also come out as the session came to a close. Glock would set a 2m:52.076 while Pastor would complete his lap setting a lap time of 2m:51.660 to be fastest. Alonso would go quicker with a 2m:50.497 as Di Resta moved up to second, 2m:51.333. The drivers were completing the lap setting a time as they completed practice starts on the grid. Bruno had pitted having not set a time. Again this session was one where nothing really was learnt in terms of the Williams team performance so now it would come down to just a single hour long session on Saturday to get the car sorted if the weather changed to be dry.

Pos  Driver         	 Team		       Time      Laps
 1.  Charles Pic         Marussia-Cosworth     2m49.354s 4
 2.  Daniel Ricciardo    Toro Rosso-Ferrari    2m49.750s 3
 3.  Fernando Alonso     Ferrari               2m50.497s 3
 4.  Paul di Resta       Force India-Mercedes  2m51.333s 3
 5.  Pastor Maldonado    Williams-Renault      2m51.660s 4
 6.  Timo Glock          Marussia-Cosworth     2m52.076s 4
 7.  Kamui Kobayashi     Sauber-Ferrari        2m53.232s 4
 8.  Jean-Eric Vergne    Toro Rosso-Ferrari    2m58.232s 3
 9.  Nico Hulkenberg     Force India-Mercedes  2m59.125s 5
10.  Sergio Perez        Sauber-Ferrari        3m12.901s 4
11.  Nico Rosberg        Mercedes                        3
12.  Michael Schumacher  Mercedes                        4
13.  Heikki Kovalainen   Caterham-Renault                1
14.  Lewis Hamilton      McLaren-Mercedes                2
15.  Sebastian Vettel    Red Bull-Renault                3
16.  Jenson Button       McLaren-Mercedes                2
17.  Felipe Massa        Ferrari                         2
18.  Bruno Senna         Williams-Renault                3