Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, July 24, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 3:00 am (0.0 ft)
Next high tide : in 5h 44m at 7:11 pm (5.4 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 6:06 am
Moon phase : Waxing Gibbous (80% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Sep 1981

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:464.86:270.76:471.56:357:30Waxing Crescent1Tue
2Wed12:434.61:194.76:571.27:361.66:367:28Waxing Crescent2Wed
3Thu1:324.11:544.77:271.78:321.66:377:27Waxing Crescent3Thu
4Fri2:323.72:344.67:582.29:441.66:377:25First Quarter4Fri
5Sat4:003.33:264.58:372.611:051.56:387:24First Quarter5Sat
6Sun5:493.34:304.69:453.06:397:23First Quarter6Sun
7Mon7:203.55:344.712:161.211:15 AM3.16:407:21First Quarter7Mon
8Tue8:113.76:324.91:120.912:273.06:407:20Waxing Gibbous8Tue
9Wed8:433.97:225.21:570.51:212.86:417:18Waxing Gibbous9Wed
10Thu9:104.18:075.42:350.32:062.56:427:17Waxing Gibbous10Thu
11Fri9:364.38:495.73:090.02:462.26:437:16Waxing Gibbous11Fri
12Sat10:034.59:305.83:42-0.13:261.86:437:14Full Moon12Sat
13Sun10:324.810:125.84:16-0.14:081.56:447:13Full Moon13Sun
14Mon11:035.010:585.64:490.04:541.26:457:11Full Moon14Mon
15Tue11:375.311:485.25:240.35:430.96:457:10Full Moon15Tue
16Wed12:145.56:010.76:370.76:467:08Waning Gibbous16Wed
17Thu12:444.812:545.66:391.27:370.66:477:07Waning Gibbous17Thu
18Fri1:494.31:415.67:211.88:450.66:487:05Waning Gibbous18Fri
19Sat3:103.92:365.58:122.310:060.56:487:04Third Quarter19Sat
20Sun4:513.73:465.49:232.711:260.36:497:02Third Quarter20Sun
21Mon6:223.95:025.410:562.96:507:01Third Quarter21Mon
22Tue7:304.26:145.412:350.112:192.76:517:00Waning Crescent22Tue
23Wed8:184.47:185.51:34-0.11:262.46:516:58Waning Crescent23Wed
24Thu8:564.78:135.62:22-0.22:192.06:526:57Waning Crescent24Thu
25Fri9:294.89:015.63:04-0.13:051.76:536:55Waning Crescent25Fri
26Sat9:585.09:445.43:400.13:461.46:546:54New Moon26Sat
27Sun10:275.110:255.24:130.44:251.16:546:52New Moon27Sun
28Mon10:545.111:054.94:430.75:041.06:556:51New Moon28Mon
29Tue11:205.111:474.65:111.15:420.96:566:50New Moon29Tue
30Wed11:475.15:391.66:230.96:576:48Waxing Crescent30Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9412110)

Common Questions About Port San Luis, CA Tides

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

Slack tide in Port San Luis, CA is approximately 11:05 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 spring phase. Tonight's moon is 80% 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 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 Waxing Gibbous (80% illuminated). This places Port San Luis, 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