Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in South San Francisco, CA.
Next low tide (tomorrow) : 3:43 am (0.5 ft)
Next high tide : in 1h 36m at 8:26 pm (7.1 ft)
Sunset today : 8:34 pm
Sunrise tomorrow : 5:48 am
Moon phase : First Quarter (69% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Jan 2017

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:446.11:236.97:442.98:21-0.57:245:02Waxing Crescent1Sun
2Mon3:226.22:086.68:342.89:02-0.27:245:02Waxing Crescent2Mon
3Tue4:036.33:026.29:332.69:470.27:245:03Waxing Crescent3Tue
4Wed4:466.54:095.710:422.310:380.77:245:04First Quarter4Wed
5Thu5:336.75:335.311:581.911:341.27:245:05First Quarter5Thu
6Fri6:217.07:065.21:101.37:245:06First Quarter6Fri
7Sat7:107.38:335.412:361.62:130.67:245:07Waxing Gibbous7Sat
8Sun8:007.79:455.71:392.03:09-0.17:245:08Waxing Gibbous8Sun
9Mon8:508.010:456.02:392.34:01-0.77:245:09Waxing Gibbous9Mon
10Tue9:408.111:386.33:372.44:49-1.17:245:10Waxing Gibbous10Tue
11Wed10:298.24:322.45:36-1.37:245:11Full Moon11Wed
12Thu12:276.511:18 AM8.25:252.46:21-1.37:245:12Full Moon12Thu
13Fri1:126.612:067.96:182.47:05-1.27:235:13Full Moon13Fri
14Sat1:566.712:547.67:102.37:48-0.97:235:14Waning Gibbous14Sat
15Sun2:396.71:427.18:042.38:30-0.47:235:15Waning Gibbous15Sun
16Mon3:216.72:326.59:012.29:130.17:225:16Waning Gibbous16Mon
17Tue4:046.63:275.910:042.29:580.77:225:17Waning Gibbous17Tue
18Wed4:476.64:335.311:112.010:471.37:215:18Third Quarter18Wed
19Thu5:326.65:555.012:211.87:215:19Third Quarter19Thu
20Fri6:186.67:294.91:271.47:215:20Third Quarter20Fri
21Sat7:046.78:535.012:432.32:241.07:205:21Third Quarter21Sat
22Sun7:496.89:545.31:442.63:130.67:195:22Waning Crescent22Sun
23Mon8:327.010:415.52:402.83:540.37:195:23Waning Crescent23Mon
24Tue9:147.111:205.73:282.84:320.07:185:24Waning Crescent24Tue
25Wed9:547.311:555.94:112.85:06-0.37:185:25Waning Crescent25Wed
26Thu10:337.44:502.85:39-0.57:175:27New Moon26Thu
27Fri12:276.011:12 AM7.45:272.76:12-0.67:165:28New Moon27Fri
28Sat12:596.211:52 AM7.46:042.56:45-0.67:155:29New Moon28Sat
29Sun1:316.312:327.26:442.47:19-0.67:155:30New Moon29Sun
30Mon2:056.41:157.07:272.27:56-0.37:145:31Waxing Crescent30Mon
31Tue2:406.52:036.68:152.08:350.07:135:32Waxing Crescent31Tue
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 12:04 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 transitional phase. Tonight's moon is 69% 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 (69% 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