RaceAtlas

Alcatraz Island Tides: Wednesday, August 13, 2025

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

5.2 ft2:56 AM0.8 ft8:53 AM6.0 ft3:38 PM1.2 ft9:47 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.0 ft at 3:38 PM, low 0.8 ft at 8:53 AM. Gate: flood 3.5 kt at 1:04 PM, ebb 1.6 kt at 7:08 AM.
Modelled current at the Golden Gate on a 3.5 kt floodThe Gate at max flood, 3.5 kt
Tide height
TimeHeight
2:56 AMHigh5.2 ft
8:53 AMLow0.8 ft
3:38 PMHigh6.0 ft
9:47 PMLow1.2 ft
Current · Golden Gate
TimeStateSpeed
12:57 AMmax flood ENE (074°)2.7 kt
4:17 AMslack–
7:08 AMmax ebb SW (235°)1.6 kt
9:51 AMslack–
1:04 PMmax flood ENE (074°)3.5 kt
4:36 PMslack–
7:30 PMmax ebb SW (235°)1.5 kt
10:53 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.