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 : 11:20 am (-0.2 ft)
Next high tide : in 4h 24m at 4:28 am (6.3 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 - Aug 2032

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:425.89:287.54:010.23:332.76:148:17Waning Crescent1Sun
2Mon11:336.010:177.44:510.04:282.76:158:16Waning Crescent2Mon
3Tue12:166.15:33-0.15:162.76:158:15Waning Crescent3Tue
4Wed12:536.26:10-0.15:592.66:168:14New Moon4Wed
5Thu1:256.26:43-0.16:382.46:178:13New Moon5Thu
6Fri12:207.21:546.37:140.07:162.36:188:12New Moon6Fri
7Sat12:587.02:216.37:430.27:532.26:198:11New Moon7Sat
8Sun1:356.82:486.48:120.48:302.16:208:10Waxing Crescent8Sun
9Mon2:136.53:166.58:410.79:102.06:208:08Waxing Crescent9Mon
10Tue2:546.13:466.69:121.19:541.86:218:07Waxing Crescent10Tue
11Wed3:405.84:206.79:451.510:451.76:228:06Waxing Crescent11Wed
12Thu4:355.44:596.710:231.911:441.66:238:05First Quarter12Thu
13Fri5:475.15:456.811:092.46:248:04First Quarter13Fri
14Sat7:175.06:386.912:511.312:092.76:258:02First Quarter14Sat
15Sun8:465.17:377.11:580.91:222.96:268:01First Quarter15Sun
16Mon9:545.48:377.42:590.52:332.96:268:00Waxing Gibbous16Mon
17Tue10:455.79:357.73:530.03:362.76:277:59Waxing Gibbous17Tue
18Wed11:296.110:317.94:42-0.44:322.46:287:57Waxing Gibbous18Wed
19Thu12:096.45:28-0.65:242.06:297:56Full Moon19Thu
20Fri12:486.76:12-0.76:161.66:307:55Full Moon20Fri
21Sat12:197.91:267.06:55-0.67:081.26:317:53Full Moon21Sat
22Sun1:127.72:067.37:38-0.38:010.96:327:52Waning Gibbous22Sun
23Mon2:087.32:467.58:210.28:560.76:327:51Waning Gibbous23Mon
24Tue3:056.93:297.59:060.79:550.66:337:49Waning Gibbous24Tue
25Wed4:086.44:157.59:541.410:590.66:347:48Waning Gibbous25Wed
26Thu5:185.95:057.410:492.06:357:46Third Quarter26Thu
27Fri6:405.66:027.212:090.711:54 AM2.56:367:45Third Quarter27Fri
28Sat8:065.67:057.11:230.71:102.86:377:43Third Quarter28Sat
29Sun9:215.88:087.02:320.62:242.86:387:42Waning Crescent29Sun
30Mon10:186.09:087.03:320.53:272.76:387:40Waning Crescent30Mon
31Tue11:036.110:007.04:220.44:192.56:397:39Waning Crescent31Tue
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 7:54 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 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