RaceAtlas

Alcatraz Island Tides: Wednesday, December 31, 2025

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

2.9 ft1:42 AM6.9 ft8:05 AM-1.0 ft3:22 PM4.6 ft10:40 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.9 ft at 8:05 AM, low -1.0 ft at 3:22 PM. Gate: flood 2.9 kt at 5:53 AM, ebb 1.6 kt at 12:26 PM.
Modelled current at the Golden Gate on a 2.9 kt floodThe Gate at max flood, 2.9 kt
Tide height
TimeHeight
1:42 AMLow2.9 ft
8:05 AMHigh6.9 ft
3:22 PMLow-1.0 ft
10:40 PMHigh4.6 ft
Current · Golden Gate
TimeStateSpeed
12:24 AMmax ebb SW (235°)0.8 kt
2:35 AMslack–
5:53 AMmax flood ENE (074°)2.9 kt
9:18 AMslack–
12:26 PMmax ebb SW (235°)1.6 kt
4:31 PMslack–
7:49 PMmax flood ENE (074°)2.8 kt
11:33 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.