RaceAtlas

Alcatraz Island Tides: Monday, August 4, 2025

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

0.5 ft3:22 AM4.2 ft10:58 AM3.6 ft2:43 PM5.9 ft8:36 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.9 ft at 8:36 PM, low 0.5 ft at 3:22 AM. Gate: flood 2.1 kt at 8:16 AM, ebb 0.2 kt at 1:09 PM.
Modelled current at the Golden Gate on a 2.1 kt floodThe Gate at max flood, 2.1 kt
Tide height
TimeHeight
3:22 AMLow0.5 ft
10:58 AMHigh4.2 ft
2:43 PMLow3.6 ft
8:36 PMHigh5.9 ft
Current · Golden Gate
TimeStateSpeed
4:09 AMslack–
8:16 AMmax flood ENE (074°)2.1 kt
12:01 PMslack–
1:09 PMmax ebb SW (235°)0.2 kt
2:31 PMslack–
6:02 PMmax flood ENE (074°)1.8 kt
9:50 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.