RaceAtlas

Alcatraz Island Tides: Monday, August 18, 2025

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

-0.1 ft2:36 AM4.5 ft10:01 AM3.4 ft2:01 PM6.5 ft8:08 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.5 ft at 8:08 PM, low -0.1 ft at 2:36 AM. Gate: flood 2.5 kt at 5:46 PM, ebb 1.2 kt at 1:03 AM.
Modelled current at the Golden Gate on a 2.5 kt floodThe Gate at max flood, 2.5 kt
Tide height
TimeHeight
2:36 AMLow-0.1 ft
10:01 AMHigh4.5 ft
2:01 PMLow3.4 ft
8:08 PMHigh6.5 ft
Current · Golden Gate
TimeStateSpeed
1:03 AMmax ebb SW (235°)1.2 kt
3:29 AMslack–
6:51 AMmax flood ENE (074°)2.3 kt
10:37 AMslack–
12:26 PMmax ebb SW (235°)0.6 kt
2:25 PMslack–
5:46 PMmax flood ENE (074°)2.5 kt
9:28 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.