Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, July 3, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 3h 04m at 7:17 am (-0.4 ft)
Next high tide : 2:14 pm (3.8 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:53 am
Moon phase : Waning Gibbous (87% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 2005

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:514.89:375.03:330.63:411.56:586:46New Moon1Sat
2Sun10:105.010:144.83:560.84:151.26:586:45New Moon2Sun
3Mon10:305.210:544.64:181.14:520.96:596:44New Moon3Mon
4Tue10:525.411:394.34:401.55:320.77:006:42New Moon4Tue
5Wed11:165.55:031.96:150.57:016:41Waxing Crescent5Wed
6Thu12:304.011:44 AM5.65:272.37:040.47:026:39Waxing Crescent6Thu
7Fri1:333.712:185.65:512.78:010.37:026:38Waxing Crescent7Fri
8Sat2:593.41:015.56:173.19:120.37:036:37Waxing Crescent8Sat
9Sun2:005.310:320.27:046:35First Quarter9Sun
10Mon6:443.73:265.28:453.611:430.07:056:34First Quarter10Mon
11Tue7:184.04:595.211:133.47:066:33First Quarter11Tue
12Wed7:454.36:185.312:41-0.212:352.97:066:31Waxing Gibbous12Wed
13Thu8:124.77:255.41:29-0.21:362.27:076:30Waxing Gibbous13Thu
14Fri8:405.18:245.42:11-0.12:291.47:086:29Waxing Gibbous14Fri
15Sat9:095.59:185.32:490.13:170.87:096:27Waxing Gibbous15Sat
16Sun9:385.910:105.03:240.54:050.27:106:26Full Moon16Sun
17Mon10:086.111:044.73:571.04:52-0.17:116:25Full Moon17Mon
18Tue10:406.34:301.65:39-0.37:126:24Full Moon18Tue
19Wed12:014.311:13 AM6.25:032.16:28-0.37:126:22Waning Gibbous19Wed
20Thu1:034.011:47 AM6.05:372.67:19-0.27:136:21Waning Gibbous20Thu
21Fri2:153.812:245.66:123.18:150.17:146:20Waning Gibbous21Fri
22Sat3:513.71:085.26:533.49:200.47:156:19Waning Gibbous22Sat
23Sun5:363.82:044.88:023.710:330.57:166:18Third Quarter23Sun
24Mon6:404.03:284.410:253.711:370.67:176:17Third Quarter24Mon
25Tue7:164.14:584.312:013.37:186:15Third Quarter25Tue
26Wed7:424.36:104.312:290.612:582.97:196:14Third Quarter26Wed
27Thu8:034.57:084.31:110.71:412.47:206:13Waning Crescent27Thu
28Fri8:224.77:574.41:440.82:181.97:216:12Waning Crescent28Fri
29Sat8:405.08:424.42:121.02:531.47:216:11Waning Crescent29Sat
30Sun7:595.38:254.31:371.22:270.96:225:10Waning Crescent30Sun
31Mon8:195.69:094.22:011.53:020.46:235:09New Moon31Mon
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 10:45 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 Port San Luis, CA?

Port San Luis, CA is currently in a spring phase. Tonight's moon is 87% 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 Waning Gibbous (87% 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