RaceAtlas

Alcatraz Island Tides: Wednesday, September 17, 2025

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

-0.2 ft3:17 AM5.0 ft10:24 AM2.8 ft3:20 PM5.9 ft9:08 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.9 ft at 9:08 PM, low -0.2 ft at 3:17 AM. Gate: flood 2.7 kt at 7:31 AM, ebb 1.4 kt at 1:57 AM.
Modelled current at the Golden Gate on a 2.7 kt floodThe Gate at max flood, 2.7 kt
Tide height
TimeHeight
3:17 AMLow-0.2 ft
10:24 AMHigh5.0 ft
3:20 PMLow2.8 ft
9:08 PMHigh5.9 ft
Current · Golden Gate
TimeStateSpeed
1:57 AMmax ebb SW (235°)1.4 kt
4:09 AMslack–
7:31 AMmax flood ENE (074°)2.7 kt
11:14 AMslack–
1:48 PMmax ebb SW (235°)0.9 kt
3:45 PMslack–
6:54 PMmax flood ENE (074°)2.3 kt
10:33 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.