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 15m at 1:09 pm (2.7 ft)
Next high tide : 7:30 pm (7.0 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 6:05 am
Moon phase : First Quarter (63% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Nov 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:015.61:086.87:283.38:280.06:355:11Waning Gibbous1Fri
2Sat3:585.51:476.78:093.69:150.16:365:10Waning Gibbous2Sat
3Sun5:045.52:356.49:053.710:100.26:375:09Waning Gibbous3Sun
4Mon6:105.63:356.210:293.811:130.26:385:08Third Quarter4Mon
5Tue7:035.74:486.012:033.56:395:07Third Quarter5Tue
6Wed7:446.06:075.912:160.31:133.16:405:06Third Quarter6Wed
7Thu8:176.37:236.01:130.32:082.46:415:05Waning Crescent7Thu
8Fri8:486.68:346.12:030.42:551.66:425:04Waning Crescent8Fri
9Sat9:197.09:406.22:480.63:410.76:435:03Waning Crescent9Sat
10Sun9:517.410:426.33:311.04:26-0.16:445:02Waning Crescent10Sun
11Mon10:257.811:436.34:141.45:12-0.86:455:01New Moon11Mon
12Tue11:018.14:571.95:59-1.36:465:00New Moon12Tue
13Wed12:446.311:41 AM8.25:422.46:47-1.56:475:00New Moon13Wed
14Thu1:446.312:248.16:302.87:38-1.56:484:59Waxing Crescent14Thu
15Fri2:456.21:127.97:233.18:32-1.36:494:58Waxing Crescent15Fri
16Sat3:496.12:067.58:253.39:30-0.96:504:57Waxing Crescent16Sat
17Sun4:546.13:066.99:433.410:32-0.56:524:57First Quarter17Sun
18Mon5:576.24:156.411:123.311:36-0.16:534:56First Quarter18Mon
19Tue6:546.35:335.912:362.96:544:56First Quarter19Tue
20Wed7:416.56:535.612:370.31:462.36:554:55First Quarter20Wed
21Thu8:216.78:095.51:310.72:421.76:564:54Waxing Gibbous21Thu
22Fri8:546.89:165.52:181.03:291.16:574:54Waxing Gibbous22Fri
23Sat9:227.010:155.62:591.44:090.76:584:53Waxing Gibbous23Sat
24Sun9:487.111:085.63:371.94:450.36:594:53Waxing Gibbous24Sun
25Mon10:127.211:575.74:132.35:180.07:004:53Full Moon25Mon
26Tue10:387.24:472.75:49-0.37:014:52Full Moon26Tue
27Wed12:425.711:05 AM7.35:213.06:21-0.47:024:52Full Moon27Wed
28Thu1:265.811:35 AM7.25:563.26:53-0.57:034:52Full Moon28Thu
29Fri2:105.812:087.16:313.47:29-0.57:044:51Waning Gibbous29Fri
30Sat2:545.712:447.07:103.58:08-0.57:054:51Waning Gibbous30Sat
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 4:19 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 63% 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 is the moon phase in South San Francisco, CA tonight?

Tonight the moon over South San Francisco, CA is First Quarter (63% illuminated). This places South San Francisco, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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