RaceAtlas

Alcatraz Island Tides: Monday, October 20, 2025

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

1.5 ft5:14 AM5.8 ft11:39 AM0.4 ft6:00 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.8 ft at 11:39 AM, low 0.4 ft at 6:00 PM. Gate: flood 3.0 kt at 9:27 AM, ebb 1.7 kt at 4:29 PM.
Modelled current at the Golden Gate on a 3.0 kt floodThe Gate at max flood, 3.0 kt
Tide height
TimeHeight
5:14 AMLow1.5 ft
11:39 AMHigh5.8 ft
6:00 PMLow0.4 ft
Current · Golden Gate
TimeStateSpeed
1:04 AMslack–
3:47 AMmax ebb SW (235°)1.2 kt
6:08 AMslack–
9:27 AMmax flood ENE (074°)3.0 kt
12:52 PMslack–
4:29 PMmax ebb SW (235°)1.7 kt
7:14 PMslack–
10:28 PMmax flood ENE (074°)2.9 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.