RaceAtlas

Half Moon Bay Tides: Sunday, December 21, 2025

Tide heights at Half Moon Bay with the flood, ebb and slack schedule at the Golden Gate.

4.1 ft12:24 AM3.2 ft4:23 AM5.9 ft10:19 AM-0.7 ft5:56 PM0 ft2 ft4 ft6 ft12 AM6 AM12 PM6 PM12 AM
High 5.9 ft at 10:19 AM, low -0.7 ft at 5:56 PM. Gate: flood 2.5 kt at 11:20 PM, ebb 1.7 kt at 3:45 PM.
Modelled current at the Golden Gate on a 2.5 kt floodThe Gate at max flood, 2.5 kt
Tide height
TimeHeight
12:24 AMHigh4.1 ft
4:23 AMLow3.2 ft
10:19 AMHigh5.9 ft
5:56 PMLow-0.7 ft
Current · Golden Gate
TimeStateSpeed
3:12 AMslack–
4:53 AMmax ebb SW (235°)0.5 kt
6:32 AMslack–
9:37 AMmax flood ENE (074°)2.4 kt
12:45 PMslack–
3:45 PMmax ebb SW (235°)1.7 kt
7:52 PMslack–
11:20 PMmax flood ENE (074°)2.5 kt

Not for navigation. These are harmonic predictions, not live measurements. Tide heights: station 9414131 (Half Moon Bay). Currents: station SFB1203 (San Francisco Bay Entrance, Golden Gate). · RaceAtlas, the SF Bay current atlas.