Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Monday, July 13, 2026
The tide is currently rising in South San Francisco, CA.
Next low tide : 5:45 pm (3.1 ft)
Next high tide : in 3h 37m at 1:19 pm (6.1 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 5:58 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Jun 1991

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:186.64:535.69:35-0.59:413.15:498:25Waning Gibbous1Sat
2Sun2:596.35:315.710:14-0.310:393.15:498:25Waning Gibbous2Sun
3Mon3:465.96:095.810:560.011:482.85:488:26Third Quarter3Mon
4Tue4:425.56:476.011:390.35:488:27Third Quarter4Tue
5Wed5:515.17:246.312:582.512:260.75:488:27Third Quarter5Wed
6Thu7:144.98:016.62:021.91:151.25:488:28Third Quarter6Thu
7Fri8:424.88:387.02:561.22:071.75:478:28Waning Crescent7Fri
8Sat10:035.09:177.33:450.52:592.15:478:29Waning Crescent8Sat
9Sun11:135.39:597.74:32-0.33:512.45:478:29Waning Crescent9Sun
10Mon12:145.65:19-0.94:432.75:478:30Waning Crescent10Mon
11Tue1:085.86:06-1.45:352.85:478:30New Moon11Tue
12Wed1:596.06:54-1.86:292.95:478:31New Moon12Wed
13Thu12:238.22:476.17:42-1.97:252.85:478:31New Moon13Thu
14Fri1:168.13:356.38:31-1.88:252.75:478:32Waxing Crescent14Fri
15Sat2:107.74:226.49:20-1.59:302.55:478:32Waxing Crescent15Sat
16Sun3:077.25:086.510:09-1.010:422.35:478:33Waxing Crescent16Sun
17Mon4:086.65:556.710:58-0.411:582.05:478:33First Quarter17Mon
18Tue5:175.96:426.911:480.35:478:33First Quarter18Tue
19Wed6:375.37:287.11:141.512:411.05:478:33First Quarter19Wed
20Thu8:085.08:137.22:241.01:361.65:478:34First Quarter20Thu
21Fri9:375.08:557.33:250.52:322.25:488:34Waxing Gibbous21Fri
22Sat10:535.29:367.34:180.13:272.65:488:34Waxing Gibbous22Sat
23Sun11:535.410:157.45:03-0.24:192.95:488:34Waxing Gibbous23Sun
24Mon12:425.65:44-0.55:073.15:488:34Waxing Gibbous24Mon
25Tue1:255.76:21-0.65:513.25:498:35Full Moon25Tue
26Wed2:025.86:56-0.66:313.25:498:35Full Moon26Wed
27Thu12:077.32:365.87:29-0.77:103.25:498:35Full Moon27Thu
28Fri12:447.23:075.88:01-0.67:493.15:508:35Full Moon28Fri
29Sat1:217.03:375.98:33-0.68:303.05:508:35Waning Gibbous29Sat
30Sun1:596.74:066.09:05-0.49:142.95:518:35Waning Gibbous30Sun
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 3:32 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 1% 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 New Moon (1% 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