RaceAtlas

Alcatraz Island Tides: Saturday, July 18, 2026

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

5.6 ft2:49 AM-0.2 ft9:18 AM5.6 ft4:18 PM1.9 ft10:04 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.6 ft at 2:49 AM, low -0.2 ft at 9:18 AM. Gate: flood 3.4 kt at 1:32 PM, ebb 1.6 kt at 7:24 AM.
Modelled current at the Golden Gate on a 3.4 kt floodThe Gate at max flood, 3.4 kt
Tide height
TimeHeight
2:49 AMHigh5.6 ft
9:18 AMLow-0.2 ft
4:18 PMHigh5.6 ft
10:04 PMLow1.9 ft
Current · Golden Gate
TimeStateSpeed
12:57 AMmax flood ENE (074°)2.5 kt
4:13 AMslack–
7:24 AMmax ebb SW (235°)1.6 kt
10:17 AMslack–
1:32 PMmax flood ENE (074°)3.4 kt
5:30 PMslack–
8:34 PMmax ebb SW (235°)1.4 kt
11:07 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.