Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in South San Francisco, CA.
Next low tide : in 5h 14m at 5:23 am (-1.2 ft)
Next high tide : 12:32 pm (5.8 ft)
Sunset today : 8:32 pm
Sunrise tomorrow : 5:58 am
Moon phase : Waning Crescent (4% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Jun 1993

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:015.510:177.84:35-0.44:011.95:498:25Waxing Gibbous1Tue
2Wed12:045.75:24-0.94:542.25:488:26Waxing Gibbous2Wed
3Thu1:005.96:11-1.35:462.45:488:26Full Moon3Thu
4Fri1:516.06:56-1.46:372.65:488:27Full Moon4Fri
5Sat12:307.82:406.17:40-1.47:292.75:488:28Full Moon5Sat
6Sun1:147.53:266.18:23-1.28:222.85:478:28Waning Gibbous6Sun
7Mon1:597.24:116.19:06-1.09:172.85:478:29Waning Gibbous7Mon
8Tue2:446.74:556.19:48-0.610:162.75:478:29Waning Gibbous8Tue
9Wed3:316.25:376.110:31-0.211:222.65:478:30Waning Gibbous9Wed
10Thu4:245.76:186.111:150.35:478:30Third Quarter10Thu
11Fri5:255.26:586.212:312.412:010.85:478:31Third Quarter11Fri
12Sat6:404.97:366.41:382.012:501.35:478:31Third Quarter12Sat
13Sun8:064.78:146.62:381.61:411.85:478:32Third Quarter13Sun
14Mon9:294.78:516.83:291.12:312.15:478:32Waning Crescent14Mon
15Tue10:384.99:297.04:140.63:212.55:478:32Waning Crescent15Tue
16Wed11:345.210:077.24:540.14:072.75:478:33Waning Crescent16Wed
17Thu12:225.45:31-0.34:512.85:478:33Waning Crescent17Thu
18Fri1:055.66:07-0.65:342.95:478:33New Moon18Fri
19Sat1:455.86:43-0.96:182.95:478:34New Moon19Sat
20Sun12:077.62:245.97:21-1.17:032.95:478:34New Moon20Sun
21Mon12:517.63:036.18:00-1.27:512.85:488:34New Moon21Mon
22Tue1:367.43:436.28:41-1.18:442.65:488:34Waxing Crescent22Tue
23Wed2:257.24:236.49:23-0.99:432.45:488:34Waxing Crescent23Wed
24Thu3:196.75:056.610:07-0.510:502.15:498:35Waxing Crescent24Thu
25Fri4:206.25:496.910:530.05:498:35First Quarter25Fri
26Sat5:335.66:357.112:031.711:44 AM0.75:498:35First Quarter26Sat
27Sun7:005.27:247.41:181.212:391.35:508:35First Quarter27Sun
28Mon8:335.18:147.62:280.61:401.95:508:35Waxing Gibbous28Mon
29Tue9:585.29:047.83:300.02:432.35:508:35Waxing Gibbous29Tue
30Wed11:085.59:547.94:25-0.53:442.65:518:35Waxing Gibbous30Wed
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 8:57 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 spring phase. Tonight's moon is 4% 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 Crescent (4% 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