RaceAtlas

Alcatraz Island Tides: Friday, August 29, 2025

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

3.9 ft4:52 AM2.8 ft9:41 AM5.4 ft4:13 PM1.3 ft11:20 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.4 ft at 4:13 PM, low 1.3 ft at 11:20 PM. Gate: flood 2.1 kt at 1:57 PM, ebb 0.9 kt at 8:03 PM.
Modelled current at the Golden Gate on a 2.1 kt floodThe Gate at max flood, 2.1 kt
Tide height
TimeHeight
4:52 AMHigh3.9 ft
9:41 AMLow2.8 ft
4:13 PMHigh5.4 ft
11:20 PMLow1.3 ft
Current · Golden Gate
TimeStateSpeed
3:00 AMmax flood ENE (074°)1.9 kt
7:02 AMslack–
8:47 AMmax ebb SW (235°)0.6 kt
10:47 AMslack–
1:57 PMmax flood ENE (074°)2.1 kt
5:34 PMslack–
8:03 PMmax ebb SW (235°)0.9 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.