RaceAtlas

Alcatraz Island Tides: Tuesday, August 25, 2026

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

-0.0 ft4:57 AM4.8 ft12:00 PM2.8 ft4:46 PM6.0 ft10:35 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.0 ft at 10:35 PM, low -0.0 ft at 4:57 AM. Gate: flood 2.6 kt at 9:36 AM, ebb 1.2 kt at 3:11 AM.
Modelled current at the Golden Gate on a 2.6 kt floodThe Gate at max flood, 2.6 kt
Tide height
TimeHeight
4:57 AMLow-0.0 ft
12:00 PMHigh4.8 ft
4:46 PMLow2.8 ft
10:35 PMHigh6.0 ft
Current · Golden Gate
TimeStateSpeed
3:11 AMmax ebb SW (235°)1.2 kt
5:48 AMslack–
9:36 AMmax flood ENE (074°)2.6 kt
1:24 PMslack–
3:33 PMmax ebb SW (235°)0.7 kt
5:20 PMslack–
8:27 PMmax flood ENE (074°)2.0 kt
11:49 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.