Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in South San Francisco, CA.
Next low tide : 11:11 pm (2.4 ft)
Next high tide : in 3h 01m at 5:33 pm (6.5 ft)
Sunset today : 8:34 pm
Sunrise tomorrow : 5:47 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Dec 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon2:176.112:397.07:093.07:48-0.47:054:51Waning Gibbous1Mon
2Tue2:586.01:176.77:543.18:25-0.27:064:51Waning Gibbous2Tue
3Wed3:376.01:586.48:443.19:040.17:074:51Waning Gibbous3Wed
4Thu4:176.02:456.09:433.09:450.47:084:50Waning Gibbous4Thu
5Fri4:586.03:405.610:502.810:300.87:094:50Third Quarter5Fri
6Sat5:396.24:495.212:012.57:104:50Third Quarter6Sat
7Sun6:196.46:115.01:042.17:114:50Third Quarter7Sun
8Mon6:596.67:355.012:111.61:571.57:124:50Third Quarter8Mon
9Tue7:386.98:515.11:041.92:430.97:124:50Waning Crescent9Tue
10Wed8:177.29:545.41:572.23:260.27:134:51Waning Crescent10Wed
11Thu8:577.510:505.72:462.44:07-0.47:144:51Waning Crescent11Thu
12Fri9:397.811:405.93:352.64:49-0.97:154:51New Moon12Fri
13Sat10:238.04:232.75:32-1.37:154:51New Moon13Sat
14Sun12:276.111:09 AM8.15:122.76:16-1.57:164:51New Moon14Sun
15Mon1:136.311:57 AM8.16:032.77:02-1.57:174:52New Moon15Mon
16Tue1:596.412:487.96:572.67:48-1.37:184:52Waxing Crescent16Tue
17Wed2:456.51:427.47:562.58:36-1.07:184:52Waxing Crescent17Wed
18Thu3:326.72:416.99:022.39:25-0.47:194:53Waxing Crescent18Thu
19Fri4:216.83:486.210:172.110:170.27:194:53First Quarter19Fri
20Sat5:107.05:065.611:361.711:140.97:204:53First Quarter20Sat
21Sun6:017.26:355.312:531.27:204:54First Quarter21Sun
22Mon6:527.38:055.312:141.52:000.77:214:54First Quarter22Mon
23Tue7:417.59:225.51:162.02:580.27:214:55Waxing Gibbous23Tue
24Wed8:277.610:245.72:152.43:48-0.27:224:56Waxing Gibbous24Wed
25Thu9:117.611:165.93:112.64:31-0.47:224:56Waxing Gibbous25Thu
26Fri9:527.64:012.85:10-0.67:234:57Full Moon26Fri
27Sat12:016.110:30 AM7.54:472.95:46-0.67:234:57Full Moon27Sat
28Sun12:406.111:08 AM7.45:292.96:19-0.67:234:58Full Moon28Sun
29Mon1:166.111:44 AM7.26:102.96:51-0.57:234:59Full Moon29Mon
30Tue1:506.112:207.06:492.87:22-0.47:245:00Waning Gibbous30Tue
31Wed2:216.112:566.87:292.87:54-0.17:245:00Waning Gibbous31Wed
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 8:22 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 28% 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 Waxing Crescent (28% 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