Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Saturday, July 4, 2026
The tide is currently rising in South San Francisco, CA.
Next low tide : 9:48 am (-0.3 ft)
Next high tide : in 33m at 2:46 am (6.5 ft)
Sunset today : 8:34 pm
Sunrise tomorrow : 5:53 am
Moon phase : Waning Gibbous (80% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Feb 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:246.81:537.18:041.68:25-0.37:135:33Waxing Crescent1Wed
2Thu3:017.02:546.39:051.39:060.57:125:34Waxing Crescent2Thu
3Fri3:417.24:065.610:131.09:511.37:115:35First Quarter3Fri
4Sat4:247.35:365.111:260.810:432.27:105:36First Quarter4Sat
5Sun5:127.37:255.012:430.57:095:37First Quarter5Sun
6Mon6:077.28:595.31:560.27:085:38First Quarter6Mon
7Tue7:077.210:045.61:103.22:59-0.17:075:40Waxing Gibbous7Tue
8Wed8:067.210:525.92:263.33:51-0.37:065:41Waxing Gibbous8Wed
9Thu9:007.211:316.03:273.24:35-0.47:055:42Waxing Gibbous9Thu
10Fri9:487.24:173.05:13-0.57:045:43Waxing Gibbous10Fri
11Sat12:046.110:31 AM7.24:592.85:46-0.47:035:44Full Moon11Sat
12Sun12:336.111:10 AM7.15:362.66:15-0.47:025:45Full Moon12Sun
13Mon12:596.111:47 AM6.96:122.46:42-0.27:005:46Full Moon13Mon
14Tue1:226.112:236.76:462.27:070.16:595:47Full Moon14Tue
15Wed1:436.21:006.47:221.97:330.46:585:48Waning Gibbous15Wed
16Thu2:056.31:406.07:591.77:580.96:575:49Waning Gibbous16Thu
17Fri2:296.42:255.68:401.58:251.46:565:50Waning Gibbous17Fri
18Sat2:556.63:205.19:271.48:542.06:555:51Waning Gibbous18Sat
19Sun3:266.64:374.810:231.29:282.56:535:52Third Quarter19Sun
20Mon4:056.76:314.711:300.910:173.16:525:54Third Quarter20Mon
21Tue4:566.78:314.912:440.66:515:55Third Quarter21Tue
22Wed6:006.99:355.31:540.16:495:56Third Quarter22Wed
23Thu7:107.110:155.61:173.52:54-0.46:485:57Waning Crescent23Thu
24Fri8:167.410:505.82:313.33:46-0.86:475:58Waning Crescent24Fri
25Sat9:167.611:236.13:302.94:32-1.16:455:59Waning Crescent25Sat
26Sun10:137.811:556.44:222.45:15-1.26:446:00New Moon26Sun
27Mon11:077.85:131.85:55-1.16:436:01New Moon27Mon
28Tue12:286.712:017.66:031.26:34-0.76:416:02New Moon28Tue
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 6:17 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 spring phase. Tonight's moon is 80% 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 maximum.

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 Gibbous (80% illuminated). This places South San Francisco, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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