RaceAtlas

Alcatraz Island Tides: Tuesday, August 4, 2026

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

4.3 ft4:05 AM1.5 ft9:44 AM5.9 ft4:35 PM1.3 ft11:09 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.9 ft at 4:35 PM, low 1.3 ft at 11:09 PM. Gate: flood 3.1 kt at 2:05 PM, ebb 1.3 kt at 8:20 PM.
Modelled current at the Golden Gate on a 3.1 kt floodThe Gate at max flood, 3.1 kt
Tide height
TimeHeight
4:05 AMHigh4.3 ft
9:44 AMLow1.5 ft
4:35 PMHigh5.9 ft
11:09 PMLow1.3 ft
Current · Golden Gate
TimeStateSpeed
2:07 AMmax flood ENE (074°)2.2 kt
5:50 AMslack–
8:19 AMmax ebb SW (235°)1.1 kt
10:41 AMslack–
2:05 PMmax flood ENE (074°)3.1 kt
5:36 PMslack–
8:20 PMmax ebb SW (235°)1.3 kt

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.