RaceAtlas

Alcatraz Island Tides: Saturday, August 30, 2025

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

3.8 ft6:28 AM3.3 ft10:28 AM5.4 ft4:58 PM4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.4 ft at 4:58 PM, low 3.3 ft at 10:28 AM. Gate: flood 1.9 kt at 2:37 PM, ebb 0.8 kt at 8:41 PM.
Modelled current at the Golden Gate on a 1.9 kt floodThe Gate at max flood, 1.9 kt
Tide height
TimeHeight
6:28 AMHigh3.8 ft
10:28 AMLow3.3 ft
4:58 PMHigh5.4 ft
Current · Golden Gate
TimeStateSpeed
12:01 AMslack–
4:38 AMmax flood ENE (074°)1.7 kt
8:19 AMslack–
9:43 AMmax ebb SW (235°)0.4 kt
11:20 AMslack–
2:37 PMmax flood ENE (074°)1.9 kt
6:16 PMslack–
8:41 PMmax ebb SW (235°)0.8 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.