Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Sunday, July 19, 2026
The tide is currently falling in South San Francisco, CA.

Next low tide : in 5h 50m at 10:38 am (0.6 ft)
Next high tide : 5:22 pm (6.9 ft)
Sunset today : 8:28 pm
Sunrise tomorrow : 6:03 am
Moon phase : First Quarter (33% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Jul 2026

< Jun 2026

Print this Tide Chart

Aug 2026 >

Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Wed	12:48	7.2	3:19	5.8	8:09	-0.7	7:52	3.2	5:51	8:35		1	Wed
2	Thu	1:26	7.1	3:49	5.9	8:42	-0.7	8:34	3.1	5:52	8:35		2	Thu
3	Fri	2:04	6.8	4:19	6.0	9:14	-0.5	9:20	3.0	5:52	8:34		3	Fri
4	Sat	2:46	6.5	4:50	6.1	9:48	-0.3	10:14	2.8	5:53	8:34		4	Sat
5	Sun	3:33	6.1	5:22	6.4	10:24	0.2	11:16	2.4	5:53	8:34		5	Sun
6	Mon	4:31	5.6	5:57	6.6	11:03	0.7			5:54	8:34		6	Mon
7	Tue	5:47	5.1	6:34	6.9	12:24	2.0	11:47 AM	1.3	5:55	8:34		7	Tue
8	Wed	7:24	4.8	7:16	7.3	1:32	1.3	12:38	2.0	5:55	8:33		8	Wed
9	Thu	9:07	4.9	8:03	7.6	2:37	0.6	1:37	2.6	5:56	8:33		9	Thu
10	Fri	10:33	5.2	8:55	7.9	3:36	-0.1	2:41	3.0	5:56	8:33		10	Fri
11	Sat	11:39	5.5	9:49	8.2	4:31	-0.7	3:45	3.2	5:57	8:32		11	Sat
12	Sun			12:32	5.8	5:23	-1.2	4:46	3.2	5:58	8:32		12	Sun
13	Mon			1:19	6.1	6:14	-1.5	5:45	3.1	5:58	8:31		13	Mon
14	Tue			2:02	6.3	7:02	-1.6	6:42	2.9	5:59	8:31		14	Tue
15	Wed	12:33	8.3	2:43	6.4	7:48	-1.5	7:39	2.6	6:00	8:30		15	Wed
16	Thu	1:26	8.0	3:23	6.6	8:32	-1.3	8:37	2.4	6:01	8:30		16	Thu
17	Fri	2:19	7.5	4:03	6.7	9:15	-0.8	9:38	2.1	6:01	8:29		17	Fri
18	Sat	3:13	6.8	4:42	6.8	9:56	-0.2	10:42	1.9	6:02	8:29		18	Sat
19	Sun	4:12	6.1	5:22	6.9	10:38	0.6	11:51	1.7	6:03	8:28		19	Sun
20	Mon	5:21	5.4	6:02	7.0	11:21	1.3			6:03	8:27		20	Mon
21	Tue	6:48	5.0	6:45	7.0	1:01	1.4	12:10	2.1	6:04	8:27		21	Tue
22	Wed	8:33	4.9	7:30	7.0	2:09	1.0	1:09	2.7	6:05	8:26		22	Wed
23	Thu	10:07	5.1	8:18	7.1	3:10	0.7	2:16	3.2	6:06	8:25		23	Thu
24	Fri	11:12	5.4	9:05	7.1	4:04	0.4	3:20	3.4	6:07	8:25		24	Fri
25	Sat			12:00	5.6	4:50	0.1	4:15	3.4	6:07	8:24		25	Sat
26	Sun			12:38	5.8	5:31	-0.1	5:01	3.4	6:08	8:23		26	Sun
27	Mon			1:10	5.8	6:08	-0.3	5:42	3.3	6:09	8:22		27	Mon
28	Tue			1:39	5.9	6:41	-0.4	6:19	3.1	6:10	8:21		28	Tue
29	Wed			2:05	6.0	7:12	-0.5	6:56	3.0	6:11	8:20		29	Wed
30	Thu	12:35	7.3	2:31	6.1	7:41	-0.5	7:33	2.8	6:12	8:20		30	Thu
31	Fri	1:13	7.1	2:57	6.2	8:11	-0.3	8:13	2.5	6:12	8:19		31	Fri
Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date

Tidal Data Source: (9414391)

www.USHarbors.com

The US Harbors tide chart design is protected by copyright. It may be printed for personal use only.
Any commercial use, modification, redistribution, or repackaging without written permission is strictly prohibited.

When is the lowest tide this week in South San Francisco, CA?

The lowest tide this week in South San Francisco, CA is 0.1 ft on Saturday, Jul 25 at 4:50 am.

When is the highest tide this week in South San Francisco, CA?

The highest tide this week in South San Francisco, CA is 7.2 ft on Saturday, Jul 25 at 9:52 pm — worth noting for launching your boat and being alert for possible high tide flooding.

What time does the tide turn (slack tide) in South San Francisco, CA today?

Slack tide in South San Francisco, CA is approximately 2:00 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in South San Francisco, CA?

South San Francisco, CA is currently in a transitional phase. Tonight's moon is 33% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are shifting between spring and neap.

What datum are South San Francisco, CA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for South San Francisco, CA?

Tide predictions for South San Francisco, CA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for South San Francisco, CA?

Tide data for South San Francisco, CA is sourced from NOAA Station #9414391. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9414391.

What time is high tide in South San Francisco, CA today?

High tides in South San Francisco, CA today: 4:12 am (6.1 ft), 5:22 pm (6.9 ft). The 5:22 pm high of 6.9 ft is notably higher than the other — known as diurnal inequality, common on coasts influenced by lunar declination.

What time is low tide in South San Francisco, CA today?

Low tides in South San Francisco, CA today: 10:38 am (0.6 ft), 11:51 pm (1.7 ft).

What is the tidal range in South San Francisco, CA today?

Today's tidal range in South San Francisco, CA is 6.4 ft — the difference between the day's highest and lowest water level. This month's average daily range is about 7.3 ft, so today's swing is below-average.

What is the moon phase in South San Francisco, CA tonight?

Tonight the moon over South San Francisco, CA is First Quarter (33% illuminated). This places South San Francisco, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

What type of tides does South San Francisco, CA have — semi-diurnal, diurnal, or mixed?

South San Francisco, CA has semi-diurnal tides — two high tides and two low tides roughly every 24 hours and 50 minutes, with similar heights.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA

In The Zone: The Sabre 51 Salon Express

By US Harbors When Sabre Yachts completed construction of hull number 200 of its 48 Salon Express model, more than half the crew who built it had also worked on hull number one. The average tenure on that line was 12 years, and they produced a yacht that proved to… Learn More