RaceAtlas

Alcatraz Island Tides: Sunday, August 16, 2026

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

5.3 ft2:39 AM0.8 ft8:38 AM5.8 ft3:21 PM1.3 ft9:29 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.8 ft at 3:21 PM, low 0.8 ft at 8:38 AM. Gate: flood 3.3 kt at 12:52 PM, ebb 1.5 kt at 7:02 AM.
Modelled current at the Golden Gate on a 3.3 kt floodThe Gate at max flood, 3.3 kt
Tide height
TimeHeight
2:39 AMHigh5.3 ft
8:38 AMLow0.8 ft
3:21 PMHigh5.8 ft
9:29 PMLow1.3 ft
Current · Golden Gate
TimeStateSpeed
12:49 AMmax flood ENE (074°)2.6 kt
4:10 AMslack–
7:02 AMmax ebb SW (235°)1.5 kt
9:41 AMslack–
12:52 PMmax flood ENE (074°)3.3 kt
4:34 PMslack–
7:47 PMmax ebb SW (235°)1.5 kt
10:41 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.