Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Thursday, July 30, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 4:55 pm (2.4 ft)
Next high tide : in 39m at 12:15 pm (3.9 ft)
Sunset today : 8:08 pm
Sunrise tomorrow : 6:10 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jan 2087

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:595.69:013.412:272.52:27-0.27:115:02Waning Crescent1Wed
2Thu7:355.89:353.61:112.53:00-0.57:115:02Waning Crescent2Thu
3Fri8:105.910:093.71:522.53:34-0.87:115:03New Moon3Fri
4Sat8:466.010:443.82:332.44:08-0.97:115:04New Moon4Sat
5Sun9:236.011:194.03:152.34:43-0.97:115:05New Moon5Sun
6Mon10:035.811:554.24:012.35:19-0.87:115:06Waxing Crescent6Mon
7Tue10:475.54:532.25:55-0.67:115:07Waxing Crescent7Tue
8Wed12:334.311:35 AM5.05:502.16:32-0.27:115:07Waxing Crescent8Wed
9Thu1:154.612:314.46:552.07:120.37:115:08Waxing Crescent9Thu
10Fri2:004.81:423.78:151.87:560.87:115:09First Quarter10Fri
11Sat2:525.13:173.29:451.48:491.47:115:10First Quarter11Sat
12Sun3:465.45:023.011:070.89:521.87:115:11First Quarter12Sun
13Mon4:425.76:363.212:160.17:115:12Waxing Gibbous13Mon
14Tue5:385.97:443.41:12-0.57:105:13Waxing Gibbous14Tue
15Wed6:326.28:353.712:052.22:01-0.97:105:14Waxing Gibbous15Wed
16Thu7:226.39:173.91:062.22:45-1.27:105:15Waxing Gibbous16Thu
17Fri8:086.39:574.11:592.13:25-1.27:095:16Full Moon17Fri
18Sat8:526.210:344.22:482.04:04-1.27:095:17Full Moon18Sat
19Sun9:345.911:114.33:351.94:40-0.97:095:18Full Moon19Sun
20Mon10:155.511:474.34:221.85:15-0.67:085:19Waning Gibbous20Mon
21Tue10:565.15:091.85:47-0.27:085:20Waning Gibbous21Tue
22Wed12:224.411:38 AM4.55:571.86:170.37:075:21Waning Gibbous22Wed
23Thu12:584.412:233.96:501.86:470.87:075:22Waning Gibbous23Thu
24Fri1:364.41:173.37:551.87:161.37:065:23Third Quarter24Fri
25Sat2:194.42:352.99:171.77:491.87:065:24Third Quarter25Sat
26Sun3:094.54:282.610:411.48:352.27:055:25Third Quarter26Sun
27Mon4:024.66:232.711:511.09:462.57:045:26Third Quarter27Mon
28Tue4:554.87:322.912:440.67:045:27Third Quarter28Tue
29Wed5:455.08:093.21:250.17:035:28Waning Crescent29Wed
30Thu6:315.38:383.412:022.52:01-0.37:025:29Waning Crescent30Thu
31Fri7:135.59:063.612:552.42:34-0.67:025:30Waning Crescent31Fri
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 2:35 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 99% 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 Full Moon (99% 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