RaceAtlas

Alcatraz Island Tides: Friday, October 31, 2025

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

0.4 ft1:42 AM5.0 ft8:55 AM2.4 ft2:34 PM4.7 ft8:06 PM0 ft2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 5.0 ft at 8:55 AM, low 0.4 ft at 1:42 AM. Gate: flood 2.5 kt at 5:55 AM, ebb 1.0 kt at 12:55 PM.
Modelled current at the Golden Gate on a 2.5 kt floodThe Gate at max flood, 2.5 kt
Tide height
TimeHeight
1:42 AMLow0.4 ft
8:55 AMHigh5.0 ft
2:34 PMLow2.4 ft
8:06 PMHigh4.7 ft
Current · Golden Gate
TimeStateSpeed
2:10 AMslack–
5:55 AMmax flood ENE (074°)2.5 kt
10:25 AMslack–
12:55 PMmax ebb SW (235°)1.0 kt
3:19 PMslack–
6:04 PMmax flood ENE (074°)1.7 kt
9:35 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.