RaceAtlas

Alcatraz Island Tides: Friday, July 18, 2025

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

1.1 ft12:33 AM3.8 ft6:46 AM2.0 ft11:44 AM6.3 ft6:35 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.3 ft at 6:35 PM, low 1.1 ft at 12:33 AM. Gate: flood 2.9 kt at 4:02 PM, ebb 1.3 kt at 10:44 PM.
Modelled current at the Golden Gate on a 2.9 kt floodThe Gate at max flood, 2.9 kt
Tide height
TimeHeight
12:33 AMLow1.1 ft
6:46 AMHigh3.8 ft
11:44 AMLow2.0 ft
6:35 PMHigh6.3 ft
Current · Golden Gate
TimeStateSpeed
1:23 AMslack–
4:26 AMmax flood ENE (074°)2.1 kt
8:11 AMslack–
10:23 AMmax ebb SW (235°)0.9 kt
12:38 PMslack–
4:02 PMmax flood ENE (074°)2.9 kt
7:40 PMslack–
10:44 PMmax ebb SW (235°)1.3 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.