RaceAtlas

Alcatraz Island Tides: Sunday, September 20, 2026

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

0.7 ft2:01 AM4.5 ft9:42 AM3.4 ft2:16 PM5.2 ft7:34 PM2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 5.2 ft at 7:34 PM, low 0.7 ft at 2:01 AM. Gate: flood 2.1 kt at 7:05 AM, ebb 0.8 kt at 11:54 PM.
Modelled current at the Golden Gate on a 2.1 kt floodThe Gate at max flood, 2.1 kt
Tide height
TimeHeight
2:01 AMLow0.7 ft
9:42 AMHigh4.5 ft
2:16 PMLow3.4 ft
7:34 PMHigh5.2 ft
Current · Golden Gate
TimeStateSpeed
2:42 AMslack–
7:05 AMmax flood ENE (074°)2.1 kt
10:59 AMslack–
12:26 PMmax ebb SW (235°)0.3 kt
1:55 PMslack–
5:05 PMmax flood ENE (074°)1.4 kt
9:03 PMslack–
11:54 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.