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 2h 28m 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 - Aug 2033

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon4:305.55:186.610:401.66:138:17First Quarter1Mon
2Tue5:355.16:006.612:001.911:24 AM2.06:148:16First Quarter2Tue
3Wed6:584.96:476.71:051.712:182.56:158:15First Quarter3Wed
4Thu8:314.97:396.92:091.41:222.86:168:14First Quarter4Thu
5Fri9:475.18:317.13:051.02:272.96:178:13Waxing Gibbous5Fri
6Sat10:425.49:217.33:540.53:252.96:188:12Waxing Gibbous6Sat
7Sun11:265.710:107.54:380.14:152.86:198:11Waxing Gibbous7Sun
8Mon12:046.05:19-0.25:032.66:198:10Waxing Gibbous8Mon
9Tue12:416.25:58-0.55:492.36:208:09Full Moon9Tue
10Wed1:186.56:38-0.66:362.06:218:08Full Moon10Wed
11Thu12:357.81:546.87:18-0.67:241.76:228:06Full Moon11Thu
12Fri1:257.62:327.07:58-0.48:161.46:238:05Waning Gibbous12Fri
13Sat2:187.33:127.28:400.09:111.26:248:04Waning Gibbous13Sat
14Sun3:146.83:557.49:240.510:111.06:258:03Waning Gibbous14Sun
15Mon4:176.34:417.410:121.111:180.96:258:01Third Quarter15Mon
16Tue5:305.85:347.511:071.76:268:00Third Quarter16Tue
17Wed6:555.66:327.412:330.712:122.26:277:59Third Quarter17Wed
18Thu8:235.67:347.41:480.51:262.56:287:58Third Quarter18Thu
19Fri9:385.88:367.42:570.32:392.76:297:56Waning Crescent19Fri
20Sat10:386.09:347.53:560.13:432.66:307:55Waning Crescent20Sat
21Sun11:266.310:277.44:460.04:382.46:317:54Waning Crescent21Sun
22Mon12:076.45:29-0.15:262.26:317:52Waning Crescent22Mon
23Tue12:446.56:080.06:102.16:327:51New Moon23Tue
24Wed1:166.56:420.16:501.96:337:49New Moon24Wed
25Thu12:397.11:466.67:150.37:281.86:347:48New Moon25Thu
26Fri1:196.82:146.67:460.68:051.76:357:47New Moon26Fri
27Sat1:586.52:416.68:170.98:431.66:367:45Waxing Crescent27Sat
28Sun2:386.23:106.68:481.39:231.56:367:44Waxing Crescent28Sun
29Mon3:225.93:416.69:211.710:081.56:377:42Waxing Crescent29Mon
30Tue4:125.64:176.69:572.111:001.56:387:41Waxing Crescent30Tue
31Wed5:145.35:016.610:402.56:397:39First Quarter31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414391)

Common Questions About South San Francisco, CA Tides

Show All
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