RaceAtlas

Alcatraz Island Tides: Saturday, August 16, 2025

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

0.6 ft12:09 AM4.0 ft7:07 AM2.9 ft11:20 AM6.3 ft5:58 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.3 ft at 5:58 PM, low 0.6 ft at 12:09 AM. Gate: flood 2.7 kt at 3:31 PM, ebb 1.2 kt at 9:47 PM.
Modelled current at the Golden Gate on a 2.7 kt floodThe Gate at max flood, 2.7 kt
Tide height
TimeHeight
12:09 AMLow0.6 ft
7:07 AMHigh4.0 ft
11:20 AMLow2.9 ft
5:58 PMHigh6.3 ft
Current · Golden Gate
TimeStateSpeed
12:55 AMslack–
4:08 AMmax flood ENE (074°)2.2 kt
8:04 AMslack–
10:04 AMmax ebb SW (235°)0.7 kt
12:11 PMslack–
3:31 PMmax flood ENE (074°)2.7 kt
7:01 PMslack–
9:47 PMmax ebb SW (235°)1.2 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.