RaceAtlas

Alcatraz Island Tides: Tuesday, May 12, 2026

Tide heights at Alcatraz Island with the flood, ebb and slack schedule at the Golden Gate.

1.4 ft3:01 AM4.1 ft8:50 AM0.9 ft2:38 PM5.4 ft9:22 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.4 ft at 9:22 PM, low 0.9 ft at 2:38 PM. Gate: flood 2.9 kt at 6:37 PM, ebb 1.2 kt at 1:01 AM.
Modelled current at the Golden Gate on a 2.9 kt floodThe Gate at max flood, 2.9 kt
Tide height
TimeHeight
3:01 AMLow1.4 ft
8:50 AMHigh4.1 ft
2:38 PMLow0.9 ft
9:22 PMHigh5.4 ft
Current · Golden Gate
TimeStateSpeed
1:01 AMmax ebb SW (235°)1.2 kt
3:56 AMslack–
6:49 AMmax flood ENE (074°)1.9 kt
10:26 AMslack–
12:36 PMmax ebb SW (235°)1.0 kt
3:08 PMslack–
6:37 PMmax flood ENE (074°)2.9 kt
10:35 PMslack–

Not for navigation. These are harmonic predictions, not live measurements. Tide heights: station 9414792 (Alcatraz Island). Currents: station SFB1203 (San Francisco Bay Entrance, Golden Gate). · RaceAtlas, the SF Bay current atlas.