RaceAtlas

Alcatraz Island Tides: Saturday, March 21, 2026

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

6.0 ft1:39 AM-0.3 ft8:01 AM4.7 ft2:44 PM1.7 ft7:51 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.0 ft at 1:39 AM, low -0.3 ft at 8:01 AM. Gate: flood 3.0 kt at 12:17 PM, ebb 1.8 kt at 5:21 AM.
Modelled current at the Golden Gate on a 3.0 kt floodThe Gate at max flood, 3.0 kt
Tide height
TimeHeight
1:39 AMHigh6.0 ft
8:01 AMLow-0.3 ft
2:44 PMHigh4.7 ft
7:51 PMLow1.7 ft
Current · Golden Gate
TimeStateSpeed
2:35 AMslack–
5:21 AMmax ebb SW (235°)1.8 kt
9:12 AMslack–
12:17 PMmax flood ENE (074°)3.0 kt
3:57 PMslack–
6:29 PMmax ebb SW (235°)1.3 kt
8:57 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.