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 : 11:06 am (2.2 ft)
Next high tide : in 27m at 6:59 am (2.9 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 - Jan 1997

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:444.33:023.110:132.39:101.47:115:02Third Quarter1Wed
2Thu4:264.64:383.011:231.810:021.77:115:02Third Quarter2Thu
3Fri5:054.96:043.012:181.27:115:03Third Quarter3Fri
4Sat5:455.37:123.21:040.57:115:04Waning Crescent4Sat
5Sun6:255.68:053.51:45-0.17:115:05Waning Crescent5Sun
6Mon7:066.08:503.712:372.12:25-0.77:115:06Waning Crescent6Mon
7Tue7:486.39:343.91:262.13:06-1.17:115:07New Moon7Tue
8Wed8:316.510:184.12:152.03:48-1.47:115:07New Moon8Wed
9Thu9:166.611:024.33:052.04:31-1.57:115:08New Moon9Thu
10Fri10:036.411:484.53:581.95:15-1.47:115:09Waxing Crescent10Fri
11Sat10:546.04:551.95:59-1.17:115:10Waxing Crescent11Sat
12Sun12:354.611:48 AM5.45:571.86:44-0.77:115:11Waxing Crescent12Sun
13Mon1:254.812:484.77:061.87:31-0.17:115:12Waxing Crescent13Mon
14Tue2:184.92:014.08:281.78:230.57:115:13First Quarter14Tue
15Wed3:155.13:323.59:581.49:221.17:105:14First Quarter15Wed
16Thu4:125.25:093.211:190.910:241.67:105:15First Quarter16Thu
17Fri5:075.46:383.312:270.47:105:16Waxing Gibbous17Fri
18Sat5:585.57:463.51:22-0.17:095:17Waxing Gibbous18Sat
19Sun6:455.68:363.612:232.12:07-0.47:095:18Waxing Gibbous19Sun
20Mon7:275.79:163.71:142.22:45-0.67:095:19Waxing Gibbous20Mon
21Tue8:045.79:513.81:582.23:20-0.67:085:20Full Moon21Tue
22Wed8:395.710:243.92:362.23:53-0.67:085:21Full Moon22Wed
23Thu9:125.510:543.93:122.14:23-0.57:075:22Full Moon23Thu
24Fri9:465.411:254.03:492.14:53-0.47:075:23Full Moon24Fri
25Sat10:195.111:564.04:272.15:22-0.27:065:24Waning Gibbous25Sat
26Sun10:544.85:072.15:500.17:055:25Waning Gibbous26Sun
27Mon12:284.111:32 AM4.45:522.16:180.47:055:26Waning Gibbous27Mon
28Tue1:024.112:133.96:422.16:480.87:045:27Waning Gibbous28Tue
29Wed1:404.21:053.47:462.07:201.27:035:28Third Quarter29Wed
30Thu2:244.32:223.09:081.98:001.67:035:29Third Quarter30Thu
31Fri3:134.54:082.810:311.58:561.97:025:30Third Quarter31Fri
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 9:02 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 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