RaceAtlas

Alcatraz Island Tides: Wednesday, September 23, 2026

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

0.3 ft4:12 AM4.9 ft11:03 AM2.2 ft4:24 PM5.5 ft10:15 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.5 ft at 10:15 PM, low 0.3 ft at 4:12 AM. Gate: flood 2.5 kt at 8:41 AM, ebb 1.1 kt at 1:31 AM.
Modelled current at the Golden Gate on a 2.5 kt floodThe Gate at max flood, 2.5 kt
Tide height
TimeHeight
4:12 AMLow0.3 ft
11:03 AMHigh4.9 ft
4:24 PMLow2.2 ft
10:15 PMHigh5.5 ft
Current · Golden Gate
TimeStateSpeed
1:31 AMmax ebb SW (235°)1.1 kt
4:48 AMslack–
8:41 AMmax flood ENE (074°)2.5 kt
12:25 PMslack–
3:02 PMmax ebb SW (235°)1.0 kt
5:10 PMslack–
8:12 PMmax flood ENE (074°)2.0 kt
11:35 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.