RaceAtlas

Alcatraz Island Tides: Sunday, August 9, 2026

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

-0.6 ft3:41 AM4.6 ft11:04 AM3.3 ft3:07 PM6.8 ft9:16 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.8 ft at 9:16 PM, low -0.6 ft at 3:41 AM. Gate: flood 2.6 kt at 7:07 PM, ebb 1.4 kt at 2:27 AM.
Modelled current at the Golden Gate on a 2.6 kt floodThe Gate at max flood, 2.6 kt
Tide height
TimeHeight
3:41 AMLow-0.6 ft
11:04 AMHigh4.6 ft
3:07 PMLow3.3 ft
9:16 PMHigh6.8 ft
Current · Golden Gate
TimeStateSpeed
2:27 AMmax ebb SW (235°)1.4 kt
4:50 AMslack–
8:11 AMmax flood ENE (074°)2.6 kt
12:02 PMslack–
2:04 PMmax ebb SW (235°)0.6 kt
3:55 PMslack–
7:07 PMmax flood ENE (074°)2.6 kt
10:36 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.