RaceAtlas

Alcatraz Island Tides: Thursday, September 4, 2025

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

-0.0 ft4:11 AM4.7 ft11:20 AM2.9 ft4:02 PM6.0 ft9:52 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.0 ft at 9:52 PM, low -0.0 ft at 4:11 AM. Gate: flood 2.4 kt at 8:52 AM, ebb 1.2 kt at 1:11 AM.
Modelled current at the Golden Gate on a 2.4 kt floodThe Gate at max flood, 2.4 kt
Tide height
TimeHeight
4:11 AMLow-0.0 ft
11:20 AMHigh4.7 ft
4:02 PMLow2.9 ft
9:52 PMHigh6.0 ft
Current · Golden Gate
TimeStateSpeed
1:11 AMmax ebb SW (235°)1.2 kt
4:58 AMslack–
8:52 AMmax flood ENE (074°)2.4 kt
12:43 PMslack–
2:50 PMmax ebb SW (235°)0.7 kt
4:37 PMslack–
7:37 PMmax flood ENE (074°)2.1 kt
11:03 PMslack–

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.