RaceAtlas

Alcatraz Island Tides: Saturday, June 21, 2025

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

0.1 ft3:02 AM3.9 ft9:43 AM2.2 ft2:13 PM6.6 ft8:47 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.6 ft at 8:47 PM, low 0.1 ft at 3:02 AM. Gate: flood 2.9 kt at 6:29 PM, ebb 1.6 kt at 12:26 AM.
Modelled current at the Golden Gate on a 2.9 kt floodThe Gate at max flood, 2.9 kt
Tide height
TimeHeight
3:02 AMLow0.1 ft
9:43 AMHigh3.9 ft
2:13 PMLow2.2 ft
8:47 PMHigh6.6 ft
Current · Golden Gate
TimeStateSpeed
12:26 AMmax ebb SW (235°)1.6 kt
4:03 AMslack–
7:13 AMmax flood ENE (074°)2.5 kt
10:52 AMslack–
12:50 PMmax ebb SW (235°)0.8 kt
3:09 PMslack–
6:29 PMmax flood ENE (074°)2.9 kt
10:00 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.