RaceAtlas

Alcatraz Island Tides: Friday, October 17, 2025

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

0.4 ft3:29 AM5.5 ft10:19 AM1.5 ft4:05 PM5.1 ft10:00 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.5 ft at 10:19 AM, low 0.4 ft at 3:29 AM. Gate: flood 3.0 kt at 7:41 AM, ebb 1.5 kt at 2:37 PM.
Modelled current at the Golden Gate on a 3.0 kt floodThe Gate at max flood, 3.0 kt
Tide height
TimeHeight
3:29 AMLow0.4 ft
10:19 AMHigh5.5 ft
4:05 PMLow1.5 ft
10:00 PMHigh5.1 ft
Current · Golden Gate
TimeStateSpeed
2:00 AMmax ebb SW (235°)1.2 kt
4:09 AMslack–
7:41 AMmax flood ENE (074°)3.0 kt
11:20 AMslack–
2:37 PMmax ebb SW (235°)1.5 kt
4:53 PMslack–
8:02 PMmax flood ENE (074°)2.3 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.