RaceAtlas

Alcatraz Island Tides: Wednesday, December 17, 2025

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

3.1 ft3:10 AM6.1 ft9:12 AM-0.3 ft4:25 PM4.5 ft11:44 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.1 ft at 9:12 AM, low -0.3 ft at 4:25 PM. Gate: flood 2.7 kt at 9:02 PM, ebb 1.3 kt at 1:29 PM.
Modelled current at the Golden Gate on a 2.7 kt floodThe Gate at max flood, 2.7 kt
Tide height
TimeHeight
3:10 AMLow3.1 ft
9:12 AMHigh6.1 ft
4:25 PMLow-0.3 ft
11:44 PMHigh4.5 ft
Current · Golden Gate
TimeStateSpeed
1:53 AMmax ebb SW (235°)0.6 kt
3:45 AMslack–
6:59 AMmax flood ENE (074°)2.1 kt
10:22 AMslack–
1:29 PMmax ebb SW (235°)1.3 kt
5:24 PMslack–
9:02 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.