RaceAtlas

Alcatraz Island Tides: Tuesday, July 22, 2025

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

-1.0 ft4:39 AM4.7 ft11:58 AM3.2 ft4:04 PM6.9 ft10:11 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.9 ft at 10:11 PM, low -1.0 ft at 4:39 AM. Gate: flood 2.9 kt at 9:03 AM, ebb 1.7 kt at 3:29 AM.
Modelled current at the Golden Gate on a 2.9 kt floodThe Gate at max flood, 2.9 kt
Tide height
TimeHeight
4:39 AMLow-1.0 ft
11:58 AMHigh4.7 ft
4:04 PMLow3.2 ft
10:11 PMHigh6.9 ft
Current · Golden Gate
TimeStateSpeed
3:29 AMmax ebb SW (235°)1.7 kt
5:49 AMslack–
9:03 AMmax flood ENE (074°)2.9 kt
12:43 PMslack–
3:00 PMmax ebb SW (235°)0.8 kt
4:54 PMslack–
8:08 PMmax flood ENE (074°)2.8 kt
11:32 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.