RaceAtlas

Alcatraz Island Tides: Wednesday, July 30, 2025

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

4.4 ft3:58 AM1.4 ft9:57 AM5.4 ft4:50 PM1.8 ft11:19 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.4 ft at 4:50 PM, low 1.4 ft at 9:57 AM. Gate: flood 2.6 kt at 2:11 PM, ebb 1.1 kt at 8:21 AM.
Modelled current at the Golden Gate on a 2.6 kt floodThe Gate at max flood, 2.6 kt
Tide height
TimeHeight
3:58 AMHigh4.4 ft
9:57 AMLow1.4 ft
4:50 PMHigh5.4 ft
11:19 PMLow1.8 ft
Current · Golden Gate
TimeStateSpeed
2:26 AMmax flood ENE (074°)1.9 kt
6:01 AMslack–
8:21 AMmax ebb SW (235°)1.1 kt
10:55 AMslack–
2:11 PMmax flood ENE (074°)2.6 kt
6:19 PMslack–
8:51 PMmax ebb SW (235°)1.0 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.