Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 2h 29m at 8:52 pm (2.5 ft)
Next high tide (tomorrow) : 2:06 am (3.9 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:54 am
Moon phase : Waning Gibbous (71% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - May 2001

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:514.67:174.212:16-0.46:117:48First Quarter1Tue
2Wed6:114.57:534.612:402.11:08-0.46:107:49Waxing Gibbous2Wed
3Thu7:224.58:265.01:421.51:53-0.26:097:50Waxing Gibbous3Thu
4Fri8:244.58:585.42:350.82:340.16:087:51Waxing Gibbous4Fri
5Sat9:204.49:305.73:230.23:110.56:077:52Waxing Gibbous5Sat
6Sun10:134.310:025.84:08-0.33:471.06:067:52Full Moon6Sun
7Mon11:064.110:345.84:53-0.64:221.46:057:53Full Moon7Mon
8Tue12:003.95:38-0.84:571.96:047:54Full Moon8Tue
9Wed12:573.76:23-0.85:332.36:037:55Waning Gibbous9Wed
10Thu1:583.57:08-0.66:112.66:027:56Waning Gibbous10Thu
11Fri12:175.23:083.47:56-0.46:552.96:017:57Waning Gibbous11Fri
12Sat12:574.84:283.48:49-0.17:533.16:007:57Waning Gibbous12Sat
13Sun1:444.45:353.69:480.19:343.26:007:58Third Quarter13Sun
14Mon2:494.06:243.710:480.311:223.05:597:59Third Quarter14Mon
15Tue4:133.76:593.911:410.45:588:00Third Quarter15Tue
16Wed5:323.67:264.212:332.612:260.55:578:00Third Quarter16Wed
17Thu6:393.67:514.51:242.11:050.75:578:01Waning Crescent17Thu
18Fri7:393.68:144.82:061.61:400.85:568:02Waning Crescent18Fri
19Sat8:313.78:375.12:431.02:111.15:558:03Waning Crescent19Sat
20Sun9:193.79:025.43:190.52:421.35:558:04Waning Crescent20Sun
21Mon10:063.79:305.73:560.03:141.65:548:04New Moon21Mon
22Tue10:563.710:015.94:35-0.53:471.95:538:05New Moon22Tue
23Wed11:493.710:366.05:18-0.84:232.15:538:06New Moon23Wed
24Thu12:463.66:03-1.15:042.45:528:06New Moon24Thu
25Fri1:473.66:52-1.25:532.65:528:07Waxing Crescent25Fri
26Sat12:025.92:533.67:44-1.16:522.85:518:08Waxing Crescent26Sat
27Sun12:545.64:013.88:40-0.98:072.95:518:09Waxing Crescent27Sun
28Mon1:565.15:004.09:40-0.79:442.85:508:09First Quarter28Mon
29Tue3:114.75:504.410:40-0.411:192.45:508:10First Quarter29Tue
30Wed4:364.36:334.711:36-0.15:508:11First Quarter30Wed
31Thu5:594.07:135.112:351.712:260.25:498:11Waxing Gibbous31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9412110)

Common Questions About Port San Luis, CA Tides

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

Slack tide in Port San Luis, CA is approximately 11:29 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 Port San Luis, CA?

Port San Luis, CA is currently in a transitional phase. Tonight's moon is 71% 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 Port San Luis, 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 Port San Luis, CA?

Tide predictions for Port San Luis, 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 Port San Luis, CA?

Tide data for Port San Luis, CA is sourced from NOAA Station #9412110. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=9412110.

What is the moon phase in Port San Luis, CA tonight?

Tonight the moon over Port San Luis, CA is Waning Gibbous (71% illuminated). This places Port San Luis, 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