Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently falling in South San Francisco, CA.
Next low tide : in 4h 41m at 2:09 am (1.0 ft)
Next high tide : 8:33 am (4.9 ft)
Sunset today : 8:27 pm
Sunrise tomorrow : 6:04 am
Moon phase : First Quarter (53% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Jun 1986

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:405.29:226.83:151.52:420.95:498:25Waning Crescent1Sun
2Mon9:575.19:547.04:080.93:271.45:498:25Waning Crescent2Mon
3Tue11:045.210:247.14:540.44:101.95:488:26Waning Crescent3Tue
4Wed12:045.35:33-0.14:502.45:488:27Waning Crescent4Wed
5Thu12:565.56:09-0.35:292.85:488:27New Moon5Thu
6Fri1:445.66:43-0.56:083.15:478:28New Moon6Fri
7Sat2:275.67:15-0.76:463.35:478:28New Moon7Sat
8Sun12:227.13:085.67:49-0.77:243.45:478:29New Moon8Sun
9Mon12:577.13:485.68:24-0.78:033.45:478:30Waxing Crescent9Mon
10Tue1:346.94:285.69:00-0.78:473.45:478:30Waxing Crescent10Tue
11Wed2:136.85:085.69:39-0.69:373.45:478:31Waxing Crescent11Wed
12Thu2:566.55:485.710:20-0.510:383.35:478:31Waxing Crescent12Thu
13Fri3:456.26:275.911:04-0.311:493.05:478:31First Quarter13Fri
14Sat4:445.87:046.111:500.15:478:32First Quarter14Sat
15Sun5:565.47:406.51:022.512:390.55:478:32First Quarter15Sun
16Mon7:225.18:166.92:071.91:291.05:478:33First Quarter16Mon
17Tue8:535.08:537.33:041.02:201.65:478:33Waxing Gibbous17Tue
18Wed10:185.29:337.73:560.23:132.15:478:33Waxing Gibbous18Wed
19Thu11:305.510:158.04:46-0.64:052.55:478:34Waxing Gibbous19Thu
20Fri12:345.75:35-1.34:592.95:478:34Full Moon20Fri
21Sat1:316.06:25-1.75:533.05:488:34Full Moon21Sat
22Sun2:236.17:15-1.96:493.15:488:34Full Moon22Sun
23Mon12:428.33:136.28:05-1.97:473.15:488:34Waning Gibbous23Mon
24Tue1:358.04:026.38:55-1.78:493.05:488:34Waning Gibbous24Tue
25Wed2:297.64:496.39:44-1.39:572.95:498:35Waning Gibbous25Wed
26Thu3:257.05:366.410:33-0.811:102.65:498:35Waning Gibbous26Thu
27Fri4:256.36:216.511:21-0.25:498:35Third Quarter27Fri
28Sat5:345.77:056.712:262.312:100.55:508:35Third Quarter28Sat
29Sun6:555.17:466.81:401.81:001.25:508:35Third Quarter29Sun
30Mon8:274.98:257.02:451.31:511.85:518:35Third Quarter30Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414391)

Common Questions About South San Francisco, CA Tides

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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 5:21 am — 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 53% 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 (53% 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