RaceAtlas

Alcatraz Island Tides: Thursday, June 18, 2026

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

6.4 ft2:05 AM-1.3 ft9:05 AM5.1 ft4:23 PM2.7 ft9:19 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 6.4 ft at 2:05 AM, low -1.3 ft at 9:05 AM. Gate: flood 3.2 kt at 1:26 PM, ebb 1.8 kt at 6:59 AM.
Modelled current at the Golden Gate on a 3.2 kt floodThe Gate at max flood, 3.2 kt
Tide height
TimeHeight
2:05 AMHigh6.4 ft
9:05 AMLow-1.3 ft
4:23 PMHigh5.1 ft
9:19 PMLow2.7 ft
Current · Golden Gate
TimeStateSpeed
12:05 AMmax flood ENE (074°)2.8 kt
3:16 AMslack–
6:59 AMmax ebb SW (235°)1.8 kt
10:14 AMslack–
1:26 PMmax flood ENE (074°)3.2 kt
5:36 PMslack–
8:08 PMmax ebb SW (235°)1.0 kt
10:12 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.