Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Monday, June 22, 2026
The tide is currently falling in South San Francisco, CA.
Next low tide : in 56m at 1:41 am (1.6 ft)
Next high tide : 7:02 am (5.1 ft)
Sunset today : 8:34 pm
Sunrise tomorrow : 5:48 am
Moon phase : First Quarter (59% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Jan 2020

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:066.13:525.511:042.810:430.97:245:01First Quarter1Wed
2Thu5:456.25:055.112:152.57:245:02First Quarter2Thu
3Fri6:236.46:344.81:202.07:245:03First Quarter3Fri
4Sat7:016.68:054.812:231.82:141.57:245:03First Quarter4Sat
5Sun7:396.89:225.01:162.23:000.97:245:04Waxing Gibbous5Sun
6Mon8:177.110:225.32:082.63:400.37:245:05Waxing Gibbous6Mon
7Tue8:567.411:125.62:572.84:18-0.27:245:06Waxing Gibbous7Tue
8Wed9:367.611:565.93:433.04:56-0.67:245:07Waxing Gibbous8Wed
9Thu10:177.84:283.15:35-1.07:245:08Full Moon9Thu
10Fri12:376.011:00 AM7.95:123.16:15-1.37:245:09Full Moon10Fri
11Sat1:186.211:45 AM8.05:583.06:56-1.47:245:10Full Moon11Sat
12Sun1:586.312:327.86:462.87:39-1.37:245:11Waning Gibbous12Sun
13Mon2:396.41:227.57:392.78:23-1.07:235:12Waning Gibbous13Mon
14Tue3:216.52:177.08:372.59:09-0.67:235:13Waning Gibbous14Tue
15Wed4:046.73:186.49:452.29:560.17:235:14Waning Gibbous15Wed
16Thu4:506.94:335.811:001.810:480.87:235:15Third Quarter16Thu
17Fri5:387.16:035.312:181.47:225:16Third Quarter17Fri
18Sat6:277.37:415.21:310.87:225:17Third Quarter18Sat
19Sun7:187.59:085.412:492.12:350.27:215:18Waning Crescent19Sun
20Mon8:097.610:165.71:542.53:31-0.37:215:19Waning Crescent20Mon
21Tue8:587.711:116.02:562.84:19-0.67:205:20Waning Crescent21Tue
22Wed9:447.711:586.13:532.95:03-0.87:205:21Waning Crescent22Wed
23Thu10:297.74:442.95:43-0.97:195:22New Moon23Thu
24Fri12:396.211:11 AM7.65:302.96:21-0.87:195:24New Moon24Fri
25Sat1:176.211:51 AM7.46:142.86:56-0.77:185:25New Moon25Sat
26Sun1:516.212:307.16:552.77:30-0.57:175:26New Moon26Sun
27Mon2:236.21:086.87:362.68:03-0.27:175:27Waxing Crescent27Mon
28Tue2:536.21:476.48:192.58:360.27:165:28Waxing Crescent28Tue
29Wed3:226.22:305.99:062.49:100.77:155:29Waxing Crescent29Wed
30Thu3:546.23:205.510:002.39:461.27:145:30Waxing Crescent30Thu
31Fri4:286.34:275.011:032.110:271.87:145:31First Quarter31Fri
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 4:21 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 neap phase. Tonight's moon is 59% 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 minimum.

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 (59% illuminated). This places South San Francisco, CA in a neap tide cycle, so tidal ranges are near their weekly minimum 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