RaceAtlas

Alcatraz Island Tides: Wednesday, January 21, 2026

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

5.0 ft1:51 AM2.5 ft6:49 AM5.7 ft12:43 PM-0.4 ft7:19 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.7 ft at 12:43 PM, low -0.4 ft at 7:19 PM. Gate: flood 3.3 kt at 11:28 PM, ebb 1.8 kt at 5:06 PM.
Modelled current at the Golden Gate on a 3.3 kt floodThe Gate at max flood, 3.3 kt
Tide height
TimeHeight
1:51 AMHigh5.0 ft
6:49 AMLow2.5 ft
12:43 PMHigh5.7 ft
7:19 PMLow-0.4 ft
Current · Golden Gate
TimeStateSpeed
3:14 AMslack–
5:48 AMmax ebb SW (235°)1.0 kt
8:05 AMslack–
10:55 AMmax flood ENE (074°)2.5 kt
2:02 PMslack–
5:06 PMmax ebb SW (235°)1.8 kt
8:14 PMslack–
11:28 PMmax flood ENE (074°)3.3 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.