Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Sunday, June 21, 2026
The tide is currently rising in South San Francisco, CA.

Next low tide (tomorrow) : 1:41 am (1.6 ft)
Next high tide : in 4h 40m at 7:03 pm (6.8 ft)
Sunset today : 8:34 pm
Sunrise tomorrow : 5:48 am
Moon phase : First Quarter (49% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Mar 2035

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Date		High Tide				Low Tide				Sun		Moon	Date
Date		AM	ft	PM	ft	AM	ft	PM	ft	Rise	Set	Moon	Date
1	Thu	4:45	6.3	6:45	4.9			12:02	1.1	6:40	6:03		1	Thu
2	Fri	5:40	6.3	8:12	5.1			1:09	1.0	6:39	6:04		2	Fri
3	Sat	6:40	6.3	9:11	5.3	1:04	2.9	2:09	0.7	6:37	6:05		3	Sat
4	Sun	7:39	6.4	9:53	5.6	2:09	2.8	2:59	0.5	6:36	6:06		4	Sun
5	Mon	8:32	6.5	10:27	5.8	3:02	2.7	3:41	0.2	6:34	6:07		5	Mon
6	Tue	9:21	6.7	10:57	6.0	3:45	2.4	4:19	0.0	6:33	6:08		6	Tue
7	Wed	10:06	6.8	11:27	6.2	4:23	2.1	4:53	-0.1	6:31	6:09		7	Wed
8	Thu	10:49	6.9	11:56	6.4	5:00	1.8	5:26	-0.2	6:30	6:10		8	Thu
9	Fri	11:33	6.9			5:36	1.5	6:00	-0.1	6:29	6:10		9	Fri
10	Sat	12:26	6.6	12:17	6.8	6:15	1.1	6:34	0.1	6:27	6:11		10	Sat
11	Sun	12:58	6.8	2:04	6.6	7:56	0.8	8:11	0.4	7:26	7:12		11	Sun
12	Mon	2:32	6.9	2:55	6.3	8:41	0.5	8:50	0.8	7:24	7:13		12	Mon
13	Tue	3:09	7.0	3:53	6.0	9:31	0.3	9:34	1.3	7:23	7:14		13	Tue
14	Wed	3:50	7.0	5:00	5.6	10:28	0.2	10:24	1.9	7:21	7:15		14	Wed
15	Thu	4:39	7.0	6:21	5.4	11:33	0.2	11:27	2.3	7:20	7:16		15	Thu
16	Fri	5:37	6.9	7:48	5.4			12:47	0.1	7:18	7:17		16	Fri
17	Sat	6:44	6.8	9:04	5.6	12:47	2.6	2:02	0.0	7:17	7:18		17	Sat
18	Sun	7:56	6.8	10:04	6.0	2:11	2.6	3:10	-0.2	7:15	7:19		18	Sun
19	Mon	9:05	6.9	10:52	6.3	3:22	2.3	4:07	-0.3	7:14	7:20		19	Mon
20	Tue	10:08	6.9	11:34	6.5	4:22	1.9	4:56	-0.3	7:12	7:21		20	Tue
21	Wed	11:03	6.9			5:14	1.5	5:39	-0.3	7:11	7:22		21	Wed
22	Thu	12:11	6.7	11:55 AM	6.9	6:00	1.1	6:19	-0.1	7:09	7:23		22	Thu
23	Fri	12:46	6.8	12:43	6.7	6:44	0.8	6:57	0.2	7:08	7:24		23	Fri
24	Sat	1:19	6.8	1:29	6.5	7:25	0.6	7:33	0.6	7:06	7:25		24	Sat
25	Sun	1:50	6.8	2:15	6.2	8:05	0.4	8:09	1.0	7:05	7:25		25	Sun
26	Mon	2:20	6.7	3:01	5.9	8:44	0.4	8:45	1.5	7:03	7:26		26	Mon
27	Tue	2:51	6.6	3:49	5.6	9:25	0.4	9:22	1.9	7:01	7:27		27	Tue
28	Wed	3:23	6.5	4:44	5.4	10:09	0.5	10:05	2.3	7:00	7:28		28	Wed
29	Thu	4:00	6.3	5:50	5.1	10:59	0.6	10:59	2.7	6:58	7:29		29	Thu
30	Fri	4:44	6.1	7:08	5.1	11:58	0.7			6:57	7:30		30	Fri
31	Sat	5:40	5.9	8:24	5.2	12:12	2.9	1:03	0.7	6:55	7:31		31	Sat
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)

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

Slack tide in South San Francisco, CA is approximately 10:22 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 neap phase. Tonight's moon is 49% 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 near their weekly minimum.

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

Tonight the moon over South San Francisco, CA is First Quarter (49% illuminated). This places South San Francisco, CA in a neap tide cycle, so tidal ranges are near their weekly minimum this week.

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

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