RaceAtlas

Alcatraz Island Tides: Friday, December 19, 2025

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

4.6 ft12:24 AM3.4 ft4:30 AM6.1 ft10:20 AM-0.6 ft5:33 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.1 ft at 10:20 AM, low -0.6 ft at 5:33 PM. Gate: flood 2.6 kt at 10:21 PM, ebb 1.5 kt at 2:25 PM.
Modelled current at the Golden Gate on a 2.6 kt floodThe Gate at max flood, 2.6 kt
Tide height
TimeHeight
12:24 AMHigh4.6 ft
4:30 AMLow3.4 ft
10:20 AMHigh6.1 ft
5:33 PMLow-0.6 ft
Current · Golden Gate
TimeStateSpeed
1:37 AMslack–
3:20 AMmax ebb SW (235°)0.6 kt
5:07 AMslack–
8:17 AMmax flood ENE (074°)2.2 kt
11:28 AMslack–
2:25 PMmax ebb SW (235°)1.5 kt
6:43 PMslack–
10:21 PMmax flood ENE (074°)2.6 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.