There are a few useful website providing tidal information about the Bay:
Point Richmond .5 mi W, San Francisco Bay
08:31 0.01 kts Slack, Flood Begins 11:59 1.01 kts Max Flood 15:11 -0.01 kts Slack, Ebb Begins 17:33 -0.97 kts Max Ebb
08:57 0.01 kts Slack, Flood Begins 12:25 0.97 kts Max Flood 15:36 -0.00 kts Slack, Ebb Begins 18:07 -1.06 kts Max Ebb
06:22 -1.08 kts Max Ebb 09:22 0.00 kts Slack, Flood Begins 12:54 0.91 kts Max Flood 16:00 -0.00 kts Slack, Ebb Begins 18:44 -1.13 kts Max Ebb 21:49 0.00 kts Slack, Flood Begins
07:02 -0.96 kts Max Ebb 09:48 0.00 kts Slack, Flood Begins 13:26 0.84 kts Max Flood 16:25 -0.00 kts Slack, Ebb Begins 19:23 -1.17 kts Max Ebb 22:31 0.00 kts Slack, Flood Begins
07:45 -0.81 kts Max Ebb 10:17 0.00 kts Slack, Flood Begins 14:02 0.74 kts Max Flood 16:54 -0.00 kts Slack, Ebb Begins 20:06 -1.17 kts Max Ebb
08:33 -0.65 kts Max Ebb 10:52 0.00 kts Slack, Flood Begins 14:44 0.64 kts Max Flood 17:30 -0.00 kts Slack, Ebb Begins 20:55 -1.16 kts Max Ebb
07:30 -0.00 kts Slack, Ebb Begins 09:28 -0.51 kts Max Ebb 11:38 0.00 kts Slack, Flood Begins 15:36 0.54 kts Max Flood 18:16 -0.00 kts Slack, Ebb Begins 21:51 -1.15 kts Max Ebb