RaceAtlas

Alcatraz Island Tides: Wednesday, July 23, 2025

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

-1.2 ft5:28 AM4.9 ft12:43 PM3.1 ft5:01 PM6.9 ft11:04 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.9 ft at 11:04 PM, low -1.2 ft at 5:28 AM. Gate: flood 3.1 kt at 9:51 AM, ebb 1.9 kt at 4:18 AM.
Modelled current at the Golden Gate on a 3.1 kt floodThe Gate at max flood, 3.1 kt
Tide height
TimeHeight
5:28 AMLow-1.2 ft
12:43 PMHigh4.9 ft
5:01 PMLow3.1 ft
11:04 PMHigh6.9 ft
Current · Golden Gate
TimeStateSpeed
4:18 AMmax ebb SW (235°)1.9 kt
6:42 AMslack–
9:51 AMmax flood ENE (074°)3.1 kt
1:35 PMslack–
4:00 PMmax ebb SW (235°)0.9 kt
5:56 PMslack–
9:06 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.