RaceAtlas

Alcatraz Island Tides: Wednesday, August 6, 2025

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

-0.2 ft4:48 AM4.6 ft12:08 PM3.4 ft4:20 PM6.2 ft10:12 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.2 ft at 10:12 PM, low -0.2 ft at 4:48 AM. Gate: flood 2.4 kt at 9:33 AM, ebb 1.2 kt at 1:30 AM.
Modelled current at the Golden Gate on a 2.4 kt floodThe Gate at max flood, 2.4 kt
Tide height
TimeHeight
4:48 AMLow-0.2 ft
12:08 PMHigh4.6 ft
4:20 PMLow3.4 ft
10:12 PMHigh6.2 ft
Current · Golden Gate
TimeStateSpeed
1:30 AMmax ebb SW (235°)1.2 kt
5:43 AMslack–
9:33 AMmax flood ENE (074°)2.4 kt
1:27 PMslack–
3:08 PMmax ebb SW (235°)0.4 kt
4:40 PMslack–
7:54 PMmax flood ENE (074°)2.2 kt
11:19 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.