RaceAtlas

Alcatraz Island Tides: Tuesday, October 20, 2026

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

0.6 ft1:53 AM4.7 ft9:11 AM2.7 ft2:40 PM4.7 ft7:58 PM2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 4.7 ft at 9:11 AM, low 0.6 ft at 1:53 AM. Gate: flood 2.1 kt at 6:47 AM, ebb 0.9 kt at 11:58 PM.
Modelled current at the Golden Gate on a 2.1 kt floodThe Gate at max flood, 2.1 kt
Tide height
TimeHeight
1:53 AMLow0.6 ft
9:11 AMHigh4.7 ft
2:40 PMLow2.7 ft
7:58 PMHigh4.7 ft
Current · Golden Gate
TimeStateSpeed
2:16 AMslack–
6:47 AMmax flood ENE (074°)2.1 kt
10:44 AMslack–
12:50 PMmax ebb SW (235°)0.7 kt
2:55 PMslack–
5:49 PMmax flood ENE (074°)1.4 kt
9:32 PMslack–
11:58 PMmax ebb SW (235°)0.9 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.