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 5h 13m 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 - Aug 2038

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun12:187.72:196.27:25-0.87:142.76:138:18New Moon1Sun
2Mon1:037.72:556.48:03-0.88:012.56:148:17Waxing Crescent2Mon
3Tue1:507.53:316.68:42-0.68:532.26:158:16Waxing Crescent3Tue
4Wed2:407.14:096.89:23-0.39:502.06:168:14Waxing Crescent4Wed
5Thu3:366.64:507.010:060.310:541.76:178:13Waxing Crescent5Thu
6Fri4:416.15:347.110:530.96:188:12First Quarter6Fri
7Sat6:015.66:237.312:061.311:46 AM1.66:188:11First Quarter7Sat
8Sun7:355.37:167.51:210.912:472.26:198:10First Quarter8Sun
9Mon9:085.48:137.72:320.41:572.66:208:09Waxing Gibbous9Mon
10Tue10:255.79:097.83:360.03:062.96:218:08Waxing Gibbous10Tue
11Wed11:246.010:047.94:31-0.44:092.96:228:07Waxing Gibbous11Wed
12Thu12:126.25:21-0.65:052.86:238:05Waxing Gibbous12Thu
13Fri12:556.46:06-0.75:552.76:248:04Full Moon13Fri
14Sat1:346.46:47-0.66:422.56:248:03Full Moon14Sat
15Sun12:287.62:106.57:25-0.57:262.46:258:02Full Moon15Sun
16Mon1:117.32:426.58:01-0.28:092.26:268:00Full Moon16Mon
17Tue1:537.03:136.58:360.18:522.16:277:59Waning Gibbous17Tue
18Wed2:366.63:436.59:100.59:382.06:287:58Waning Gibbous18Wed
19Thu3:206.14:146.59:441.010:271.96:297:57Waning Gibbous19Thu
20Fri4:115.74:466.510:211.611:231.86:307:55Waning Gibbous20Fri
21Sat5:145.35:246.511:022.26:307:54Third Quarter21Sat
22Sun6:375.06:096.612:271.711:54 AM2.76:317:53Third Quarter22Sun
23Mon8:165.07:006.61:341.41:003.06:327:51Third Quarter23Mon
24Tue9:415.27:566.82:371.12:123.26:337:50Third Quarter24Tue
25Wed10:375.58:507.03:310.73:133.26:347:48Waning Crescent25Wed
26Thu11:195.89:427.24:180.34:043.16:357:47Waning Crescent26Thu
27Fri11:546.010:317.55:000.04:492.96:357:46Waning Crescent27Fri
28Sat12:286.25:39-0.35:312.66:367:44New Moon28Sat
29Sun1:016.46:18-0.56:142.26:377:43New Moon29Sun
30Mon12:067.71:346.66:56-0.56:581.96:387:41New Moon30Mon
31Tue12:557.62:086.87:34-0.47:451.56:397:40New Moon31Tue
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 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