RaceAtlas

Alcatraz Island Tides: Monday, August 11, 2025

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

6.1 ft1:11 AM-0.3 ft7:41 AM5.5 ft2:33 PM1.9 ft7:55 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.1 ft at 1:11 AM, low -0.3 ft at 7:41 AM. Gate: flood 3.5 kt at 11:43 AM, ebb 2.0 kt at 5:23 AM.
Modelled current at the Golden Gate on a 3.5 kt floodThe Gate at max flood, 3.5 kt
Tide height
TimeHeight
1:11 AMHigh6.1 ft
7:41 AMLow-0.3 ft
2:33 PMHigh5.5 ft
7:55 PMLow1.9 ft
Current · Golden Gate
TimeStateSpeed
2:23 AMslack–
5:23 AMmax ebb SW (235°)2.0 kt
8:36 AMslack–
11:43 AMmax flood ENE (074°)3.5 kt
3:40 PMslack–
6:34 PMmax ebb SW (235°)1.4 kt
9:13 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.