RaceAtlas

Alcatraz Island Tides: Saturday, September 20, 2025

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

0.2 ft5:21 AM5.5 ft12:04 PM1.5 ft5:39 PM5.6 ft11:44 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.6 ft at 11:44 PM, low 0.2 ft at 5:21 AM. Gate: flood 3.4 kt at 9:37 AM, ebb 1.7 kt at 4:28 PM.
Modelled current at the Golden Gate on a 3.4 kt floodThe Gate at max flood, 3.4 kt
Tide height
TimeHeight
5:21 AMLow0.2 ft
12:04 PMHigh5.5 ft
5:39 PMLow1.5 ft
11:44 PMHigh5.6 ft
Current · Golden Gate
TimeStateSpeed
12:19 AMslack–
3:57 AMmax ebb SW (235°)1.6 kt
6:16 AMslack–
9:37 AMmax flood ENE (074°)3.4 kt
1:11 PMslack–
4:28 PMmax ebb SW (235°)1.7 kt
6:49 PMslack–
9:52 PMmax flood ENE (074°)2.7 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.