RaceAtlas

Alcatraz Island Tides: Wednesday, December 16, 2026

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

5.0 ft5:09 AM2.6 ft11:09 AM4.0 ft4:14 PM1.0 ft10:32 PM2 ft4 ft12 AM6 AM12 PM6 PM12 AM
High 5.0 ft at 5:09 AM, low 1.0 ft at 10:32 PM. Gate: flood 2.6 kt at 1:56 AM, ebb 0.9 kt at 9:17 AM.
Modelled current at the Golden Gate on a 2.6 kt floodThe Gate at max flood, 2.6 kt
Tide height
TimeHeight
5:09 AMHigh5.0 ft
11:09 AMLow2.6 ft
4:14 PMHigh4.0 ft
10:32 PMLow1.0 ft
Current · Golden Gate
TimeStateSpeed
1:56 AMmax flood ENE (074°)2.6 kt
6:44 AMslack–
9:17 AMmax ebb SW (235°)0.9 kt
11:54 AMslack–
2:30 PMmax flood ENE (074°)1.4 kt
6:19 PMslack–
8:43 PMmax ebb SW (235°)0.9 kt
11:02 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.