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 : 10:14 pm (2.8 ft)
Next high tide : in 6h 32m at 4:50 pm (6.1 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 - Jul 2051

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:325.47:097.312:521.512:241.15:518:35Third Quarter1Sat
2Sun8:025.28:007.52:041.01:251.65:528:35Third Quarter2Sun
3Mon9:285.38:517.83:090.42:282.05:528:35Waning Crescent3Mon
4Tue10:405.59:427.94:06-0.23:292.35:538:34Waning Crescent4Tue
5Wed11:415.810:328.04:58-0.64:282.45:538:34Waning Crescent5Wed
6Thu12:336.15:46-0.95:232.55:548:34New Moon6Thu
7Fri1:216.36:31-1.06:162.55:558:34New Moon7Fri
8Sat12:087.92:056.47:13-1.07:072.55:558:33New Moon8Sat
9Sun12:537.62:466.47:54-0.97:572.45:568:33New Moon9Sun
10Mon1:387.33:256.58:33-0.68:472.45:568:33Waxing Crescent10Mon
11Tue2:226.94:036.59:11-0.39:392.35:578:32Waxing Crescent11Tue
12Wed3:076.44:406.59:490.210:352.35:588:32Waxing Crescent12Wed
13Thu3:555.95:176.510:280.711:352.15:588:31Waxing Crescent13Thu
14Fri4:515.45:566.611:101.25:598:31First Quarter14Fri
15Sat6:005.06:386.612:401.911:57 AM1.86:008:31First Quarter15Sat
16Sun7:264.87:226.71:451.612:512.26:018:30First Quarter16Sun
17Mon8:574.88:086.92:441.31:502.66:018:29First Quarter17Mon
18Tue10:115.08:547.13:360.92:492.86:028:29Waxing Gibbous18Tue
19Wed11:065.39:397.34:210.53:422.96:038:28Waxing Gibbous19Wed
20Thu11:505.510:237.45:010.14:292.96:048:28Waxing Gibbous20Thu
21Fri12:285.85:39-0.25:142.86:048:27Waxing Gibbous21Fri
22Sat1:046.06:15-0.55:572.76:058:26Full Moon22Sat
23Sun1:396.26:51-0.76:412.56:068:25Full Moon23Sun
24Mon12:357.62:156.47:28-0.87:272.36:078:25Full Moon24Mon
25Tue1:207.52:516.68:07-0.78:162.06:078:24Waning Gibbous25Tue
26Wed2:097.23:296.88:46-0.49:091.86:088:23Waning Gibbous26Wed
27Thu3:026.84:097.09:280.010:091.66:098:22Waning Gibbous27Thu
28Fri4:016.34:527.210:130.611:151.36:108:21Waning Gibbous28Fri
29Sat5:115.85:417.411:031.26:118:21Third Quarter29Sat
30Sun6:345.46:347.512:291.112:011.86:128:20Third Quarter30Sun
31Mon8:055.37:327.61:440.71:082.36:128:19Third Quarter31Mon
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 7:32 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 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