RaceAtlas

Alcatraz Island Tides: Friday, December 12, 2025

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

5.4 ft6:19 AM1.8 ft12:38 PM3.9 ft6:09 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.4 ft at 6:19 AM, low 1.8 ft at 12:38 PM. Gate: flood 2.8 kt at 3:27 AM, ebb 1.2 kt at 10:47 AM.
Modelled current at the Golden Gate on a 2.8 kt floodThe Gate at max flood, 2.8 kt
Tide height
TimeHeight
6:19 AMHigh5.4 ft
12:38 PMLow1.8 ft
6:09 PMHigh3.9 ft
Current · Golden Gate
TimeStateSpeed
3:27 AMmax flood ENE (074°)2.8 kt
7:29 AMslack–
10:47 AMmax ebb SW (235°)1.2 kt
1:09 PMslack–
4:24 PMmax flood ENE (074°)1.7 kt
7:37 PMslack–
10:03 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.