Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Thursday, July 9, 2026
The tide is currently rising in South San Francisco, CA.
Next low tide : 1:37 pm (2.6 ft)
Next high tide : in 37m at 9:07 am (4.9 ft)
Sunset today : 8:33 pm
Sunrise tomorrow : 5:56 am
Moon phase : Waning Crescent (28% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Feb 1997

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:036.87:484.91:171.07:125:33Third Quarter1Sat
2Sun6:577.09:035.212:352.62:160.57:125:34Waning Crescent2Sun
3Mon7:537.39:595.61:442.73:08-0.17:115:35Waning Crescent3Mon
4Tue8:477.610:466.02:462.73:56-0.67:105:36Waning Crescent4Tue
5Wed9:407.811:286.33:412.54:42-1.07:095:38Waning Crescent5Wed
6Thu10:328.04:342.25:26-1.27:085:39New Moon6Thu
7Fri12:096.511:23 AM8.05:251.96:10-1.27:075:40New Moon7Fri
8Sat12:496.812:157.86:171.56:54-1.07:065:41New Moon8Sat
9Sun1:297.01:087.57:091.37:38-0.67:055:42Waxing Crescent9Sun
10Mon2:117.12:037.08:051.18:220.07:045:43Waxing Crescent10Mon
11Tue2:547.23:046.49:041.09:090.67:035:44Waxing Crescent11Tue
12Wed3:397.24:135.810:100.910:011.37:015:45First Quarter12Wed
13Thu4:297.15:345.411:230.811:031.97:005:46First Quarter13Thu
14Fri5:247.07:065.312:380.76:595:47First Quarter14Fri
15Sat6:247.08:295.412:152.41:490.56:585:48First Quarter15Sat
16Sun7:246.99:335.71:292.62:490.36:575:49Waxing Gibbous16Sun
17Mon8:206.910:225.92:342.63:390.16:565:51Waxing Gibbous17Mon
18Tue9:117.011:026.13:292.54:210.06:545:52Waxing Gibbous18Tue
19Wed9:557.011:366.14:152.44:57-0.16:535:53Waxing Gibbous19Wed
20Thu10:366.94:552.25:29-0.16:525:54Full Moon20Thu
21Fri12:066.211:14 AM6.95:322.05:590.06:515:55Full Moon21Fri
22Sat12:326.211:51 AM6.86:071.96:280.26:495:56Full Moon22Sat
23Sun12:586.312:276.66:401.76:550.36:485:57Full Moon23Sun
24Mon1:246.41:056.37:141.57:240.66:475:58Waning Gibbous24Mon
25Tue1:516.41:446.17:501.47:540.96:455:59Waning Gibbous25Tue
26Wed2:206.52:295.78:311.38:271.36:446:00Waning Gibbous26Wed
27Thu2:536.53:225.49:171.29:051.86:436:01Waning Gibbous27Thu
28Fri3:326.54:305.110:121.19:512.26:416:02Third Quarter28Fri
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 11:22 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 transitional phase. Tonight's moon is 28% 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 Waning Crescent (28% 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