RaceAtlas

Alcatraz Island Tides: Today, Saturday, September 12, 2026

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

5.7 ft12:51 AM0.6 ft6:48 AM5.9 ft1:23 PM0.7 ft7:21 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.9 ft at 1:23 PM, low 0.6 ft at 6:48 AM. Gate: flood 3.5 kt at 11:00 AM, ebb 1.8 kt at 6:05 PM.
Modelled current at the Golden Gate on a 3.5 kt floodThe Gate at max flood, 3.5 kt
Tide height
TimeHeight
12:51 AMHigh5.7 ft
6:48 AMLow0.6 ft
1:23 PMHigh5.9 ft
7:21 PMLow0.7 ft
Current · Golden Gate
TimeStateSpeed
2:18 AMslack–
5:14 AMmax ebb SW (235°)1.6 kt
7:54 AMslack–
11:00 AMmax flood ENE (074°)3.5 kt
2:33 PMslack–
6:05 PMmax ebb SW (235°)1.8 kt
8:45 PMslack–
11:46 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.