RaceAtlas

Alcatraz Island Tides: Friday, November 21, 2025

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

4.5 ft1:10 AM3.3 ft5:21 AM6.0 ft11:14 AM-0.5 ft6:21 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.0 ft at 11:14 AM, low -0.5 ft at 6:21 PM. Gate: flood 2.5 kt at 11:21 PM, ebb 1.5 kt at 3:15 PM.
Modelled current at the Golden Gate on a 2.5 kt floodThe Gate at max flood, 2.5 kt
Tide height
TimeHeight
1:10 AMHigh4.5 ft
5:21 AMLow3.3 ft
11:14 AMHigh6.0 ft
6:21 PMLow-0.5 ft
Current · Golden Gate
TimeStateSpeed
2:35 AMslack–
4:24 AMmax ebb SW (235°)0.7 kt
6:22 AMslack–
9:21 AMmax flood ENE (074°)2.3 kt
12:30 PMslack–
3:15 PMmax ebb SW (235°)1.5 kt
7:38 PMslack–
11:21 PMmax flood ENE (074°)2.5 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.