Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Thursday, August 6, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 9:16 am (2.5 ft)
Next high tide : in 1h 51m at 5:34 am (2.9 ft)
Sunset today : 11:08 pm
Sunrise tomorrow : 9:23 am
Moon phase : Third Quarter (44% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Nov 1967

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:316.49:314.72:141.13:18-0.59:308:16New Moon1Wed
2Thu9:056.710:314.42:501.64:09-0.99:318:15New Moon2Thu
3Fri9:426.811:364.23:272.15:01-1.19:328:14New Moon3Fri
4Sat10:246.74:082.55:57-1.09:338:13Waxing Crescent4Sat
5Sun12:474.011:11 AM6.34:552.96:56-0.89:348:12Waxing Crescent5Sun
6Mon2:083.912:055.85:533.38:00-0.59:358:11Waxing Crescent6Mon
7Tue3:364.01:105.37:143.59:10-0.29:368:10First Quarter7Tue
8Wed4:454.22:334.89:133.410:150.09:378:09First Quarter8Wed
9Thu5:354.44:014.510:503.011:100.39:388:08First Quarter9Thu
10Fri6:134.75:174.311:592.511:570.69:398:08First Quarter10Fri
11Sat6:444.96:224.212:511.99:408:07Waxing Gibbous11Sat
12Sun7:095.17:174.112:350.91:331.49:418:06Waxing Gibbous12Sun
13Mon7:325.38:064.01:071.22:090.99:428:05Waxing Gibbous13Mon
14Tue7:525.58:504.01:341.62:420.59:438:05Waxing Gibbous14Tue
15Wed8:125.79:343.91:582.03:150.29:448:04Full Moon15Wed
16Thu8:345.810:193.82:212.33:480.09:458:04Full Moon16Thu
17Fri8:575.811:073.72:442.64:24-0.19:468:03Full Moon17Fri
18Sat9:235.83:092.95:01-0.29:478:02Full Moon18Sat
19Sun12:003.69:53 AM5.73:353.15:43-0.29:488:02Waning Gibbous19Sun
20Mon1:003.610:26 AM5.64:043.36:27-0.19:498:01Waning Gibbous20Mon
21Tue2:163.511:06 AM5.44:403.47:170.09:508:01Waning Gibbous21Tue
22Wed3:373.611:55 AM5.15:393.68:130.19:518:00Waning Gibbous22Wed
23Thu4:253.812:594.77:213.69:100.29:528:00Third Quarter23Thu
24Fri4:554.12:244.49:253.410:020.39:528:00Third Quarter24Fri
25Sat5:214.43:554.210:512.810:490.59:537:59Third Quarter25Sat
26Sun5:474.95:174.111:542.011:320.89:547:59Third Quarter26Sun
27Mon6:165.46:324.012:481.09:557:59Waning Crescent27Mon
28Tue6:476.07:404.112:131.11:380.29:567:58Waning Crescent28Tue
29Wed7:216.58:414.112:531.52:26-0.69:577:58Waning Crescent29Wed
30Thu7:576.89:414.11:341.93:14-1.29:587:58New Moon30Thu
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 7:25 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 neap phase. Tonight's moon is 44% 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 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 Third Quarter (44% illuminated). This places Port San Luis, 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