RaceAtlas

Alcatraz Island Tides: Thursday, December 31, 2026

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

5.9 ft5:49 AM1.1 ft12:39 PM3.7 ft6:46 PM2.1 ft11:42 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.9 ft at 5:49 AM, low 1.1 ft at 12:39 PM. Gate: flood 2.9 kt at 2:55 AM, ebb 1.4 kt at 10:39 AM.
Modelled current at the Golden Gate on a 2.9 kt floodThe Gate at max flood, 2.9 kt
Tide height
TimeHeight
5:49 AMHigh5.9 ft
12:39 PMLow1.1 ft
6:46 PMHigh3.7 ft
11:42 PMLow2.1 ft
Current · Golden Gate
TimeStateSpeed
2:55 AMmax flood ENE (074°)2.9 kt
6:54 AMslack–
10:39 AMmax ebb SW (235°)1.4 kt
1:12 PMslack–
4:30 PMmax flood ENE (074°)2.0 kt
7:46 PMslack–
9:59 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.