RaceAtlas

Alcatraz Island Tides: Friday, January 9, 2026

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

5.5 ft4:25 AM1.9 ft10:43 AM4.0 ft4:16 PM1.4 ft10:04 PM2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.5 ft at 4:25 AM, low 1.4 ft at 10:04 PM. Gate: flood 3.0 kt at 1:38 AM, ebb 1.2 kt at 8:59 AM.
Modelled current at the Golden Gate on a 3.0 kt floodThe Gate at max flood, 3.0 kt
Tide height
TimeHeight
4:25 AMHigh5.5 ft
10:43 AMLow1.9 ft
4:16 PMHigh4.0 ft
10:04 PMLow1.4 ft
Current · Golden Gate
TimeStateSpeed
1:38 AMmax flood ENE (074°)3.0 kt
5:48 AMslack–
8:59 AMmax ebb SW (235°)1.2 kt
11:33 AMslack–
2:35 PMmax flood ENE (074°)1.8 kt
6:00 PMslack–
8:18 PMmax ebb SW (235°)1.0 kt
10:54 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.