RaceAtlas

Alcatraz Island Tides: Saturday, September 19, 2026

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

0.9 ft12:56 AM4.3 ft8:58 AM3.6 ft1:10 PM5.1 ft6:25 PM2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 5.1 ft at 6:25 PM, low 0.9 ft at 12:56 AM. Gate: flood 2.0 kt at 6:10 AM, ebb 0.6 kt at 10:34 PM.
Modelled current at the Golden Gate on a 2.0 kt floodThe Gate at max flood, 2.0 kt
Tide height
TimeHeight
12:56 AMLow0.9 ft
8:58 AMHigh4.3 ft
1:10 PMLow3.6 ft
6:25 PMHigh5.1 ft
Current · Golden Gate
TimeStateSpeed
1:35 AMslack–
6:10 AMmax flood ENE (074°)2.0 kt
9:59 AMslack–
11:24 AMmax ebb SW (235°)0.3 kt
12:50 PMslack–
3:54 PMmax flood ENE (074°)1.4 kt
7:55 PMslack–
10:34 PMmax ebb SW (235°)0.6 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.