RaceAtlas

Alcatraz Island Tides: Monday, April 27, 2026

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

1.2 ft3:44 AM4.5 ft9:38 AM0.6 ft3:36 PM5.5 ft10:20 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.5 ft at 10:20 PM, low 0.6 ft at 3:36 PM. Gate: flood 3.2 kt at 7:47 PM, ebb 1.6 kt at 2:08 AM.
Modelled current at the Golden Gate on a 3.2 kt floodThe Gate at max flood, 3.2 kt
Tide height
TimeHeight
3:44 AMLow1.2 ft
9:38 AMHigh4.5 ft
3:36 PMLow0.6 ft
10:20 PMHigh5.5 ft
Current · Golden Gate
TimeStateSpeed
2:08 AMmax ebb SW (235°)1.6 kt
4:29 AMslack–
7:34 AMmax flood ENE (074°)2.3 kt
10:56 AMslack–
2:06 PMmax ebb SW (235°)1.2 kt
4:18 PMslack–
7:47 PMmax flood ENE (074°)3.2 kt
11:21 PMslack–

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.