Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently rising in South San Francisco, CA.
Next low tide (tomorrow) : 12:27 am (2.1 ft)
Next high tide : in 3h 40m at 6:19 pm (6.6 ft)
Sunset today : 8:34 pm
Sunrise tomorrow : 5:48 am
Moon phase : First Quarter (38% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - May 2022

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:427.02:135.77:35-0.57:162.26:137:59New Moon1Sun
2Mon1:087.03:035.68:10-0.57:522.66:128:00New Moon2Mon
3Tue1:356.93:545.58:47-0.58:313.06:118:01Waxing Crescent3Tue
4Wed2:066.74:495.49:26-0.49:133.26:108:02Waxing Crescent4Wed
5Thu2:416.55:495.310:09-0.310:073.46:098:03Waxing Crescent5Thu
6Fri3:246.26:525.310:59-0.111:203.56:078:04Waxing Crescent6Fri
7Sat4:166.07:495.411:560.16:068:05First Quarter7Sat
8Sun5:195.78:335.612:483.312:550.26:058:06First Quarter8Sun
9Mon6:325.59:075.82:003.01:510.36:048:07First Quarter9Mon
10Tue7:485.49:376.02:562.52:410.46:038:07First Quarter10Tue
11Wed8:595.410:056.43:421.93:250.56:038:08Waxing Gibbous11Wed
12Thu10:045.510:336.74:241.24:050.86:028:09Waxing Gibbous12Thu
13Fri11:065.611:027.15:040.54:451.26:018:10Waxing Gibbous13Fri
14Sat12:055.85:44-0.35:251.66:008:11Full Moon14Sat
15Sun1:045.96:26-0.96:072.05:598:12Full Moon15Sun
16Mon12:107.72:025.97:11-1.46:512.45:588:13Full Moon16Mon
17Tue12:497.83:015.97:59-1.77:382.85:578:14Waning Gibbous17Tue
18Wed1:337.84:015.98:49-1.78:323.05:578:14Waning Gibbous18Wed
19Thu2:227.65:025.99:44-1.69:353.25:568:15Waning Gibbous19Thu
20Fri3:177.36:055.910:42-1.310:543.25:558:16Waning Gibbous20Fri
21Sat4:216.87:056.111:44-0.95:558:17Third Quarter21Sat
22Sun5:336.37:596.312:242.912:47-0.55:548:18Third Quarter22Sun
23Mon6:535.88:456.51:482.41:46-0.15:538:18Third Quarter23Mon
24Tue8:155.59:266.82:571.82:400.45:538:19Waning Crescent24Tue
25Wed9:335.410:027.03:561.13:280.85:528:20Waning Crescent25Wed
26Thu10:425.410:347.14:450.54:121.35:528:21Waning Crescent26Thu
27Fri11:445.411:047.25:290.04:531.85:518:22Waning Crescent27Fri
28Sat12:395.56:07-0.35:322.35:518:22New Moon28Sat
29Sun1:315.66:43-0.66:112.75:508:23New Moon29Sun
30Mon12:017.22:195.67:17-0.76:503.05:508:24New Moon30Mon
31Tue12:307.13:045.77:51-0.77:293.25:498:24New Moon31Tue
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 9:23 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 38% 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 First Quarter (38% 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