Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Thursday, July 9, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 1:51 am (0.0 ft)
Next high tide : in 2h 55m at 6:04 pm (5.8 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:56 am
Moon phase : Waning Crescent (28% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - May 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:364.09:265.43:330.23:101.16:117:49Full Moon1Wed
2Thu10:214.09:585.64:12-0.23:441.36:097:49Full Moon2Thu
3Fri11:094.010:325.84:53-0.64:201.56:087:50Full Moon3Fri
4Sat12:013.95:38-0.85:001.86:077:51Full Moon4Sat
5Sun12:573.86:26-1.05:452.06:067:52Waning Gibbous5Sun
6Mon1:573.77:17-1.06:382.36:067:53Waning Gibbous6Mon
7Tue12:455.53:043.78:12-0.87:422.46:057:53Waning Gibbous7Tue
8Wed1:425.14:143.99:12-0.69:062.56:047:54Third Quarter8Wed
9Thu2:524.75:174.110:16-0.410:432.36:037:55Third Quarter9Thu
10Fri4:154.36:104.511:17-0.16:027:56Third Quarter10Fri
11Sat5:384.16:574.812:071.812:130.16:017:57Third Quarter11Sat
12Sun6:554.07:385.21:151.21:040.46:007:57Waning Crescent12Sun
13Mon8:034.08:165.52:110.61:500.75:597:58Waning Crescent13Mon
14Tue9:014.08:515.73:000.12:321.05:597:59Waning Crescent14Tue
15Wed9:533.99:245.83:43-0.33:101.35:588:00New Moon15Wed
16Thu10:413.99:565.74:24-0.53:471.65:578:01New Moon16Thu
17Fri11:293.810:295.65:04-0.64:221.95:568:01New Moon17Fri
18Sat12:173.75:44-0.64:592.25:568:02New Moon18Sat
19Sun1:043.76:23-0.55:372.45:558:03Waxing Crescent19Sun
20Mon1:533.67:02-0.46:192.65:548:04Waxing Crescent20Mon
21Tue12:134.92:473.67:42-0.27:072.75:548:04Waxing Crescent21Tue
22Wed12:534.63:453.68:260.18:072.85:538:05Waxing Crescent22Wed
23Thu1:394.24:403.79:130.39:312.85:538:06First Quarter23Thu
24Fri2:373.85:273.910:040.611:022.65:528:07First Quarter24Fri
25Sat3:543.56:054.210:540.85:528:07First Quarter25Sat
26Sun5:153.36:394.512:122.211:40 AM1.05:518:08First Quarter26Sun
27Mon6:293.37:114.81:071.712:231.25:518:09Waxing Gibbous27Mon
28Tue7:363.47:425.21:531.11:041.35:508:09Waxing Gibbous28Tue
29Wed8:343.58:155.52:350.51:451.55:508:10Waxing Gibbous29Wed
30Thu9:253.78:505.93:16-0.12:261.65:508:11Waxing Gibbous30Thu
31Fri10:153.89:276.23:57-0.63:081.85:498:11Full Moon31Fri
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 9:57 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 28% 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 Crescent (28% 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