Tides Today & Tomorrow in South San Francisco, CA

TIDE TIMES for Monday, July 13, 2026
The tide is currently rising in South San Francisco, CA.
Next low tide (tomorrow) : 7:02 am (-1.6 ft)
Next high tide : in 2h 44m at 11:39 pm (8.4 ft)
Sunset today : 8:31 pm
Sunrise tomorrow : 5:58 am
Moon phase : New Moon (1% illuminated)
Tide Station Location : Station #9414391
Common Questions About Tides

South San Francisco, CA Tides - Jan 1991

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue1:026.411:38 AM8.35:492.76:50-1.77:245:01Full Moon1Tue
2Wed1:456.512:308.06:452.57:34-1.47:245:02Waning Gibbous2Wed
3Thu2:286.61:237.57:432.48:18-0.97:245:03Waning Gibbous3Thu
4Fri3:096.82:186.88:442.29:01-0.37:245:04Waning Gibbous4Fri
5Sat3:516.83:176.19:512.09:450.47:255:04Waning Gibbous5Sat
6Sun4:346.94:275.411:021.710:311.27:255:05Third Quarter6Sun
7Mon5:187.05:554.912:141.47:245:06Third Quarter7Mon
8Tue6:037.07:374.81:231.07:245:07Third Quarter8Tue
9Wed6:497.09:085.112:242.52:230.67:245:08Waning Crescent9Wed
10Thu7:367.110:135.41:292.93:150.37:245:09Waning Crescent10Thu
11Fri8:217.211:015.62:303.23:590.07:245:10Waning Crescent11Fri
12Sat9:047.211:405.83:243.34:38-0.27:245:11Waning Crescent12Sat
13Sun9:457.34:093.25:13-0.47:245:12Waning Crescent13Sun
14Mon12:135.810:25 AM7.34:503.15:45-0.57:235:13New Moon14Mon
15Tue12:435.911:03 AM7.35:273.06:16-0.67:235:14New Moon15Tue
16Wed1:106.011:40 AM7.26:022.96:45-0.67:235:15New Moon16Wed
17Thu1:376.112:187.16:392.77:15-0.57:225:16New Moon17Thu
18Fri2:046.212:566.87:182.57:45-0.27:225:17Waxing Crescent18Fri
19Sat2:326.31:396.48:012.38:160.17:215:18Waxing Crescent19Sat
20Sun3:026.52:276.08:512.18:510.67:215:19Waxing Crescent20Sun
21Mon3:346.73:285.49:481.89:291.37:205:20First Quarter21Mon
22Tue4:116.94:505.010:551.410:141.97:205:21First Quarter22Tue
23Wed4:557.16:364.812:080.97:195:23First Quarter23Wed
24Thu5:477.38:215.01:210.47:195:24First Quarter24Thu
25Fri6:467.59:365.412:253.02:27-0.27:185:25Waxing Gibbous25Fri
26Sat7:487.810:305.71:423.23:25-0.77:175:26Waxing Gibbous26Sat
27Sun8:498.011:156.12:523.14:16-1.17:175:27Waxing Gibbous27Sun
28Mon9:468.111:566.33:542.85:04-1.37:165:28Full Moon28Mon
29Tue10:408.14:502.55:48-1.47:155:29Full Moon29Tue
30Wed12:346.511:32 AM8.05:432.26:29-1.27:145:30Full Moon30Wed
31Thu1:116.712:237.66:351.87:08-0.87:145:31Full Moon31Thu
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 3:20 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 spring phase. Tonight's moon is 1% 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 maximum.

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 New Moon (1% illuminated). This places South San Francisco, CA in a spring tide cycle, so tidal ranges are near their weekly maximum 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