RaceAtlas

Alcatraz Island Tides: Thursday, September 17, 2026

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

4.1 ft6:06 AM3.4 ft10:13 AM5.4 ft4:16 PM0.9 ft11:44 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.4 ft at 4:16 PM, low 0.9 ft at 11:44 PM. Gate: flood 2.0 kt at 3:35 AM, ebb 0.8 kt at 8:10 PM.
Modelled current at the Golden Gate on a 2.0 kt floodThe Gate at max flood, 2.0 kt
Tide height
TimeHeight
6:06 AMHigh4.1 ft
10:13 AMLow3.4 ft
4:16 PMHigh5.4 ft
11:44 PMLow0.9 ft
Current · Golden Gate
TimeStateSpeed
3:35 AMmax flood ENE (074°)2.0 kt
7:21 AMslack–
9:09 AMmax ebb SW (235°)0.6 kt
11:13 AMslack–
2:10 PMmax flood ENE (074°)1.9 kt
5:49 PMslack–
8:10 PMmax ebb SW (235°)0.8 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.