Half Moon Bay Tide Chart (CA)

When is high tide in Half Moon Bay today?

Sat Oct 31: 4:41 AM (4.1 ft) and 2:35 PM (5.6 ft).

When is low tide in Half Moon Bay today?

Sat Oct 31: 8:34 AM (3.3 ft) and 10:26 PM (-0.4 ft).

Half Moon Bay (CA) tide times, Oct 31 – Nov 7

Day	Time	Tide	Height
Sat Oct 31	4:41 AM	High	4.1 ft (1.24 m)
	8:34 AM	Low	3.3 ft (1.01 m)
	2:35 PM	High	5.6 ft (1.71 m)
	10:26 PM	Low	-0.4 ft (-0.13 m)
Sun Nov 1	4:51 AM	High	4.3 ft (1.30 m)
	9:21 AM	Low	3.3 ft (0.99 m)
	2:54 PM	High	5.1 ft (1.56 m)
	10:32 PM	Low	-0.2 ft (-0.05 m)
Mon Nov 2	5:43 AM	High	4.6 ft (1.39 m)
	11:02 AM	Low	2.8 ft (0.85 m)
	4:25 PM	High	4.8 ft (1.45 m)
	11:30 PM	Low	0.1 ft (0.05 m)
Tue Nov 3	6:26 AM	High	4.9 ft (1.50 m)
	12:17 PM	Low	2.1 ft (0.65 m)
	5:49 PM	High	4.6 ft (1.39 m)
Wed Nov 4	12:21 AM	Low	0.5 ft (0.15 m)
	7:03 AM	High	5.3 ft (1.62 m)
	1:19 PM	Low	1.4 ft (0.41 m)
	7:05 PM	High	4.5 ft (1.36 m)
Thu Nov 5	1:09 AM	Low	0.9 ft (0.26 m)
	7:37 AM	High	5.7 ft (1.72 m)
	2:11 PM	Low	0.6 ft (0.20 m)
	8:11 PM	High	4.5 ft (1.36 m)
Fri Nov 6	1:51 AM	Low	1.3 ft (0.38 m)
	8:09 AM	High	5.9 ft (1.81 m)
	2:55 PM	Low	0.1 ft (0.02 m)
	9:06 PM	High	4.4 ft (1.35 m)
Sat Nov 7	2:29 AM	Low	1.6 ft (0.50 m)
	8:39 AM	High	6.1 ft (1.86 m)
	3:35 PM	Low	-0.4 ft (-0.11 m)
	9:56 PM	High	4.4 ft (1.34 m)

Half Moon Bay is semidiurnal — paired highs (4.1 and 5.6 ft today) and paired lows of similar size. An average swing here this week moves 3.8 ft of water. A 6.5 ft swing — Half Moon Bay's biggest this table — runs from the 8:39 AM high on Sat Nov 7 into the next low. Half Moon Bay tops out at 6.1 ft (Sat Nov 7 8:39 AM) and bottoms at -0.4 ft (Sat Oct 31 10:26 PM).

Moving-water windows — Half Moon Bay

Half Moon Bay mid-swing times below mark predicted peak flow on its 3.8 ft average cycle (why moving water matters):

• Sat Oct 31: 6:37 AM — 0.7 ft ebb · 11:34 AM — 2.3 ft flood · 6:30 PM — 6.1 ft ebb
• Sun Nov 1: 1:38 AM — 4.7 ft flood · 7:06 AM — 1.0 ft ebb · 12:07 PM — 1.9 ft flood · 6:43 PM — 5.3 ft ebb

Tide charts near Half Moon Bay

• Santa Cruz tide chart~73 km
• Bodega Bay tide chart~103 km

Half Moon Bay numbers: NOAA CO-OPS #9414131 (Pillar Point Harbor, Half Moon Bay), 6.4 km off Half Moon Bay center; this open-water pick beat 7 closer-in candidates. Onshore wind or a storm can push real water at Half Moon Bay above the 6.1 ft predicted peak; offshore wind can hold it under. All Half Moon Bay times station-local, refreshed 2026-10-30.