RaceAtlas

Alcatraz Island Tides: Tuesday, September 30, 2025

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

0.7 ft12:43 AM4.3 ft8:54 AM3.7 ft1:06 PM5.1 ft6:18 PM2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 5.1 ft at 6:18 PM, low 0.7 ft at 12:43 AM. Gate: flood 1.8 kt at 6:18 AM, ebb 0.8 kt at 10:33 PM.
Modelled current at the Golden Gate on a 1.8 kt floodThe Gate at max flood, 1.8 kt
Tide height
TimeHeight
12:43 AMLow0.7 ft
8:54 AMHigh4.3 ft
1:06 PMLow3.7 ft
6:18 PMHigh5.1 ft
Current · Golden Gate
TimeStateSpeed
1:17 AMslack–
6:18 AMmax flood ENE (074°)1.8 kt
10:24 AMslack–
11:29 AMmax ebb SW (235°)0.2 kt
12:37 PMslack–
3:57 PMmax flood ENE (074°)1.6 kt
7:35 PMslack–
10:33 PMmax ebb SW (235°)0.8 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.