RaceAtlas

Alcatraz Island Tides: Wednesday, September 9, 2026

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

-0.5 ft4:57 AM5.4 ft11:48 AM1.8 ft5:03 PM6.3 ft11:08 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.3 ft at 11:08 PM, low -0.5 ft at 4:57 AM. Gate: flood 3.3 kt at 9:16 AM, ebb 1.9 kt at 3:40 AM.
Modelled current at the Golden Gate on a 3.3 kt floodThe Gate at max flood, 3.3 kt
Tide height
TimeHeight
4:57 AMLow-0.5 ft
11:48 AMHigh5.4 ft
5:03 PMLow1.8 ft
11:08 PMHigh6.3 ft
Current · Golden Gate
TimeStateSpeed
3:40 AMmax ebb SW (235°)1.9 kt
6:01 AMslack–
9:16 AMmax flood ENE (074°)3.3 kt
12:55 PMslack–
4:00 PMmax ebb SW (235°)1.5 kt
6:09 PMslack–
9:12 PMmax flood ENE (074°)2.9 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.