Tides Today & Tomorrow in San Francisco, CA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in San Francisco, CA.
Next low tide (tomorrow) : 12:23 am (1.0 ft)
Next high tide : in 13m at 5:03 pm (5.6 ft)
Sunset today : 7:57 pm
Sunrise tomorrow : 6:29 am
Moon phase : First Quarter (47% illuminated)
Tide Station Location : Station #9414290
Common Questions About Tides

San Francisco, CA Tides - Feb 1932

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:226.39:164.31:49-0.37:145:32Waning Crescent1Mon
2Tue7:236.410:094.61:073.32:46-0.67:135:33Waning Crescent2Tue
3Wed8:216.410:524.92:173.33:35-0.87:125:34Waning Crescent3Wed
4Thu9:156.511:305.03:153.14:18-0.97:125:35New Moon4Thu
5Fri10:036.44:052.84:57-0.97:115:36New Moon5Fri
6Sat12:055.110:47 AM6.24:502.65:32-0.77:105:37New Moon6Sat
7Sun12:365.111:29 AM5.95:322.46:04-0.57:095:39New Moon7Sun
8Mon1:055.112:095.66:142.26:35-0.17:085:40Waxing Crescent8Mon
9Tue1:315.112:505.16:552.07:040.47:075:41Waxing Crescent9Tue
10Wed1:565.21:334.67:381.87:330.97:065:42Waxing Crescent10Wed
11Thu2:215.32:234.18:251.78:021.67:055:43Waxing Crescent11Thu
12Fri2:485.33:273.79:181.58:342.27:035:44First Quarter12Fri
13Sat3:215.35:003.410:201.49:132.87:025:45First Quarter13Sat
14Sun4:025.37:133.511:311.110:143.37:015:46First Quarter14Sun
15Mon4:545.48:463.812:400.87:005:47First Quarter15Mon
16Tue5:555.59:314.11:390.46:595:48Waxing Gibbous16Tue
17Wed6:575.710:044.31:063.52:28-0.16:585:49Waxing Gibbous17Wed
18Thu7:555.910:334.52:043.43:11-0.56:565:51Waxing Gibbous18Thu
19Fri8:476.211:024.72:513.13:50-0.86:555:52Waxing Gibbous19Fri
20Sat9:376.411:305.03:352.74:27-1.06:545:53Full Moon20Sat
21Sun10:256.411:595.24:192.25:03-1.06:535:54Full Moon21Sun
22Mon11:156.35:041.75:38-0.76:515:55Full Moon22Mon
23Tue12:295.512:066.05:521.26:14-0.36:505:56Waning Gibbous23Tue
24Wed1:015.81:015.56:420.86:510.46:495:57Waning Gibbous24Wed
25Thu1:356.02:014.97:370.57:301.16:475:58Waning Gibbous25Thu
26Fri2:126.23:134.38:370.38:131.96:465:59Waning Gibbous26Fri
27Sat2:556.24:443.99:450.29:062.66:456:00Third Quarter27Sat
28Sun3:476.16:323.911:020.110:213.26:436:01Third Quarter28Sun
29Mon4:505.98:024.212:21-0.16:426:02Third Quarter29Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9414290)

Common Questions About San Francisco, CA Tides

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What time does the tide turn (slack tide) in San Francisco, CA today?

Slack tide in San Francisco, CA is approximately 8:43 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 San Francisco, CA?

San Francisco, CA is currently in a neap phase. Tonight's moon is 47% 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 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 San Francisco, CA?

Tide predictions for 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 San Francisco, CA?

Tide data for San Francisco, CA is sourced from NOAA Station #9414290. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9414290.

What is the moon phase in San Francisco, CA tonight?

Tonight the moon over San Francisco, CA is First Quarter (47% illuminated). This places 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