Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in South San Francisco, CA.
Next low tide : in 4h 49m at 11:20 am (-0.2 ft)
Next high tide : 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 - Dec 2022

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:116.76:415.712:100.11:242.17:064:51First Quarter1Thu
2Fri7:547.08:045.61:060.62:281.37:074:51Waxing Gibbous2Fri
3Sat8:337.39:195.61:581.13:210.67:074:51Waxing Gibbous3Sat
4Sun9:087.510:255.72:461.64:070.17:084:50Waxing Gibbous4Sun
5Mon9:417.611:235.83:312.14:48-0.37:094:50Waxing Gibbous5Mon
6Tue10:137.64:142.55:26-0.67:104:50Full Moon6Tue
7Wed12:155.910:45 AM7.54:562.96:02-0.77:114:50Full Moon7Wed
8Thu1:046.011:16 AM7.45:373.26:37-0.77:124:50Full Moon8Thu
9Fri1:496.011:49 AM7.36:183.47:12-0.67:134:50Full Moon9Fri
10Sat2:325.912:247.16:593.57:49-0.57:134:51Waning Gibbous10Sat
11Sun3:145.91:026.97:433.58:27-0.47:144:51Waning Gibbous11Sun
12Mon3:565.81:426.68:313.59:07-0.17:154:51Waning Gibbous12Mon
13Tue4:375.82:286.29:293.59:500.17:164:51Waning Gibbous13Tue
14Wed5:185.93:215.810:393.310:350.47:164:51Third Quarter14Wed
15Thu5:576.04:265.411:533.011:230.87:174:52Third Quarter15Thu
16Fri6:336.35:465.112:582.47:184:52Third Quarter16Fri
17Sat7:086.67:145.012:121.21:521.87:184:52Third Quarter17Sat
18Sun7:426.98:375.11:021.62:391.07:194:53Waning Crescent18Sun
19Mon8:167.39:505.41:512.03:230.37:194:53Waning Crescent19Mon
20Tue8:537.610:525.72:402.44:06-0.47:204:54Waning Crescent20Tue
21Wed9:337.911:485.93:292.74:50-1.07:214:54New Moon21Wed
22Thu10:168.24:183.05:35-1.57:214:55New Moon22Thu
23Fri12:406.111:02 AM8.35:083.16:22-1.77:214:55New Moon23Fri
24Sat1:306.211:52 AM8.35:593.17:11-1.87:224:56New Moon24Sat
25Sun2:186.312:448.16:553.18:00-1.67:224:56Waxing Crescent25Sun
26Mon3:066.31:397.77:553.08:50-1.27:234:57Waxing Crescent26Mon
27Tue3:546.42:387.19:042.89:41-0.77:234:58Waxing Crescent27Tue
28Wed4:436.53:446.410:222.510:330.07:234:58First Quarter28Wed
29Thu5:316.75:025.711:442.111:270.77:244:59First Quarter29Thu
30Fri6:187.06:335.31:021.57:245:00First Quarter30Fri
31Sat7:047.28:075.112:231.32:090.97:245:00First Quarter31Sat
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 2:49 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