RaceAtlas

Alcatraz Island Tides: Friday, September 19, 2025

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

-0.1 ft4:46 AM5.4 ft11:35 AM1.9 ft4:57 PM5.8 ft10:56 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.8 ft at 10:56 PM, low -0.1 ft at 4:46 AM. Gate: flood 3.3 kt at 9:01 AM, ebb 1.7 kt at 3:26 AM.
Modelled current at the Golden Gate on a 3.3 kt floodThe Gate at max flood, 3.3 kt
Tide height
TimeHeight
4:46 AMLow-0.1 ft
11:35 AMHigh5.4 ft
4:57 PMLow1.9 ft
10:56 PMHigh5.8 ft
Current · Golden Gate
TimeStateSpeed
3:26 AMmax ebb SW (235°)1.7 kt
5:39 AMslack–
9:01 AMmax flood ENE (074°)3.3 kt
12:36 PMslack–
3:45 PMmax ebb SW (235°)1.5 kt
5:56 PMslack–
9:03 PMmax flood ENE (074°)2.6 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.