Tides Today & Tomorrow in San Francisco, CA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently rising in San Francisco, CA.
Next low tide : 11:41 am (3.4 ft)
Next high tide : in 2h 19m at 7:51 am (3.9 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 6:30 am
Moon phase : First Quarter (56% illuminated)
Tide Station Location : Station #9414290
Common Questions About Tides

San Francisco, CA Tides - Jun 1930

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun1:296.04:174.88:36-1.28:493.14:497:25Waxing Crescent1Sun
2Mon2:315.55:094.99:33-0.910:152.84:487:26First Quarter2Mon
3Tue3:435.05:575.210:31-0.411:372.24:487:26First Quarter3Tue
4Wed5:044.56:415.511:270.14:487:27First Quarter4Wed
5Thu6:304.27:225.912:471.512:200.74:487:28Waxing Gibbous5Thu
6Fri7:534.08:006.11:470.81:101.24:477:28Waxing Gibbous6Fri
7Sat9:094.18:376.32:390.11:581.84:477:29Waxing Gibbous7Sat
8Sun10:154.29:126.43:26-0.42:452.34:477:29Waxing Gibbous8Sun
9Mon11:144.49:476.44:08-0.83:302.74:477:30Full Moon9Mon
10Tue12:064.54:48-1.04:163.04:477:30Full Moon10Tue
11Wed12:554.65:26-1.05:003.24:477:31Full Moon11Wed
12Thu1:404.66:04-1.05:453.44:477:31Full Moon12Thu
13Fri2:234.66:42-0.86:303.44:467:32Waning Gibbous13Fri
14Sat12:125.73:044.57:21-0.77:183.44:467:32Waning Gibbous14Sat
15Sun12:535.43:434.58:01-0.58:133.34:477:33Waning Gibbous15Sun
16Mon1:365.14:214.58:41-0.29:183.24:477:33Waning Gibbous16Mon
17Tue2:254.64:574.79:230.110:282.94:477:33Third Quarter17Tue
18Wed3:234.25:324.910:070.511:362.54:477:34Third Quarter18Wed
19Thu4:353.86:055.110:521.04:477:34Third Quarter19Thu
20Fri6:003.66:385.412:341.911:38 AM1.44:477:34Third Quarter20Fri
21Sat7:283.67:125.71:241.312:261.94:477:35Waning Crescent21Sat
22Sun8:483.87:486.12:080.61:142.44:477:35Waning Crescent22Sun
23Mon9:554.08:276.42:50-0.12:032.84:487:35Waning Crescent23Mon
24Tue10:534.39:096.73:33-0.72:523.04:487:35Waning Crescent24Tue
25Wed11:454.69:546.94:17-1.23:423.24:487:35New Moon25Wed
26Thu12:344.75:03-1.64:333.24:497:35New Moon26Thu
27Fri1:204.95:50-1.75:273.24:497:35New Moon27Fri
28Sat2:065.06:38-1.76:253.04:497:35Waxing Crescent28Sat
29Sun12:286.62:515.17:27-1.57:292.94:507:35Waxing Crescent29Sun
30Mon1:246.13:365.38:15-1.18:412.64:507:35Waxing Crescent30Mon
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 9:46 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 San Francisco, CA?

San Francisco, CA is currently in a neap phase. Tonight's moon is 56% 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 (56% 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