Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in South San Francisco, CA.
Next low tide : 11:11 pm (2.4 ft)
Next high tide : in 1h 47m at 5:33 pm (6.5 ft)
Sunset today : 8:34 pm
Sunrise tomorrow : 5:47 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Dec 2023

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:576.01:446.88:313.59:14-0.37:054:51Waning Gibbous1Fri
2Sat4:485.92:326.49:363.510:020.07:064:51Waning Gibbous2Sat
3Sun5:365.93:275.910:513.410:530.47:074:51Third Quarter3Sun
4Mon6:206.04:335.512:053.17:084:50Third Quarter4Mon
5Tue6:576.15:505.21:102.67:094:50Third Quarter5Tue
6Wed7:296.37:125.012:331.12:052.07:104:50Third Quarter6Wed
7Thu7:586.68:305.01:191.52:501.47:114:50Waning Crescent7Thu
8Fri8:276.99:385.22:021.93:300.87:124:50Waning Crescent8Fri
9Sat8:577.210:385.42:432.34:060.27:124:50Waning Crescent9Sat
10Sun9:287.411:315.63:242.64:42-0.37:134:51Waning Crescent10Sun
11Mon10:027.64:042.95:19-0.87:144:51New Moon11Mon
12Tue12:215.810:39 AM7.84:453.25:59-1.17:154:51New Moon12Tue
13Wed1:085.911:20 AM7.95:283.36:41-1.37:154:51New Moon13Wed
14Thu1:556.012:047.96:143.47:26-1.47:164:51Waxing Crescent14Thu
15Fri2:426.012:527.77:053.48:13-1.37:174:52Waxing Crescent15Fri
16Sat3:306.11:457.48:043.39:03-1.07:184:52Waxing Crescent16Sat
17Sun4:176.22:446.99:133.19:54-0.67:184:52Waxing Crescent17Sun
18Mon5:056.33:536.310:342.810:48-0.17:194:53First Quarter18Mon
19Tue5:516.65:155.711:592.311:420.57:194:53First Quarter19Tue
20Wed6:366.96:475.31:151.57:204:53First Quarter20Wed
21Thu7:207.38:185.312:381.22:190.87:204:54Waxing Gibbous21Thu
22Fri8:027.69:385.41:331.83:150.17:214:54Waxing Gibbous22Fri
23Sat8:437.810:455.72:282.34:03-0.57:214:55Waxing Gibbous23Sat
24Sun9:247.911:426.03:212.84:48-0.97:224:56Waxing Gibbous24Sun
25Mon10:047.94:133.05:30-1.07:224:56Full Moon25Mon
26Tue12:326.110:45 AM7.85:023.26:09-1.17:234:57Full Moon26Tue
27Wed1:176.211:24 AM7.65:493.36:48-1.07:234:57Full Moon27Wed
28Thu1:596.212:047.46:343.37:26-0.87:234:58Full Moon28Thu
29Fri2:396.112:437.17:193.38:03-0.67:234:59Waning Gibbous29Fri
30Sat3:166.01:226.88:053.28:39-0.37:245:00Waning Gibbous30Sat
31Sun3:516.02:046.48:563.19:130.17:245:00Waning Gibbous31Sun
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 8:22 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 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 Waxing 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