RaceAtlas

Alcatraz Island Tides: Friday, August 22, 2025

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

-0.6 ft5:53 AM5.2 ft12:49 PM2.3 ft5:48 PM6.3 ft11:48 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.3 ft at 11:48 PM, low -0.6 ft at 5:53 AM. Gate: flood 3.4 kt at 10:10 AM, ebb 1.9 kt at 4:34 AM.
Modelled current at the Golden Gate on a 3.4 kt floodThe Gate at max flood, 3.4 kt
Tide height
TimeHeight
5:53 AMLow-0.6 ft
12:49 PMHigh5.2 ft
5:48 PMLow2.3 ft
11:48 PMHigh6.3 ft
Current · Golden Gate
TimeStateSpeed
12:24 AMslack–
4:34 AMmax ebb SW (235°)1.9 kt
6:58 AMslack–
10:10 AMmax flood ENE (074°)3.4 kt
1:52 PMslack–
4:46 PMmax ebb SW (235°)1.4 kt
6:56 PMslack–
9:56 PMmax flood ENE (074°)2.8 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.