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 7m 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 - Oct 2033

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:265.46:086.312:130.812:283.27:056:52First Quarter1Sat
2Sun8:295.77:196.41:200.71:483.07:066:50First Quarter2Sun
3Mon9:186.08:286.52:210.52:512.67:076:49Waxing Gibbous3Mon
4Tue10:006.39:316.73:160.43:442.07:086:47Waxing Gibbous4Tue
5Wed10:376.710:306.94:040.34:331.47:096:46Waxing Gibbous5Wed
6Thu11:147.011:277.04:490.35:200.77:106:44Waxing Gibbous6Thu
7Fri11:527.45:330.46:070.17:116:43Full Moon7Fri
8Sat12:237.112:307.66:170.76:55-0.37:116:41Full Moon8Sat
9Sun1:197.01:107.87:011.17:44-0.67:126:40Full Moon9Sun
10Mon2:166.81:537.87:481.58:35-0.77:136:38Waning Gibbous10Mon
11Tue3:156.62:397.78:371.99:29-0.67:146:37Waning Gibbous11Tue
12Wed4:176.33:297.49:332.310:28-0.37:156:36Waning Gibbous12Wed
13Thu5:246.14:257.110:392.711:320.07:166:34Third Quarter13Thu
14Fri6:366.15:306.711:582.87:176:33Third Quarter14Fri
15Sat7:456.26:426.312:410.31:212.77:186:31Third Quarter15Sat
16Sun8:456.37:566.21:480.52:322.47:196:30Third Quarter16Sun
17Mon9:336.59:046.12:480.63:312.07:206:29Waning Crescent17Mon
18Tue10:146.610:036.13:380.84:201.57:216:27Waning Crescent18Tue
19Wed10:476.710:556.14:211.05:021.27:226:26Waning Crescent19Wed
20Thu11:176.811:416.14:591.25:390.97:236:25Waning Crescent20Thu
21Fri11:446.95:331.46:130.67:246:23New Moon21Fri
22Sat12:246.112:106.96:051.76:450.47:256:22New Moon22Sat
23Sun1:066.112:367.06:372.07:170.27:266:21New Moon23Sun
24Mon1:476.01:047.07:082.27:490.17:276:20New Moon24Mon
25Tue2:285.91:346.97:412.58:240.17:286:18Waxing Crescent25Tue
26Wed3:125.82:086.88:162.79:020.17:296:17Waxing Crescent26Wed
27Thu4:005.72:456.78:562.99:450.17:306:16Waxing Crescent27Thu
28Fri4:525.73:306.59:453.110:340.27:316:15Waxing Crescent28Fri
29Sat5:515.74:246.310:483.211:310.37:326:14First Quarter29Sat
30Sun6:505.85:326.112:093.17:336:13First Quarter30Sun
31Mon7:446.06:486.012:320.41:282.77:346:11First Quarter31Mon
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 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