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 38m 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 - Mar 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:154.98:433.81:162.02:17-0.16:315:58Waxing Gibbous1Fri
2Sat7:535.09:074.01:541.82:46-0.16:305:59Waxing Gibbous2Sat
3Sun8:285.09:314.12:291.53:13-0.16:286:00Full Moon3Sun
4Mon9:025.09:574.33:041.33:400.06:276:01Full Moon4Mon
5Tue9:384.910:234.53:401.14:070.16:266:02Full Moon5Tue
6Wed10:164.610:514.64:190.94:350.46:256:03Full Moon6Wed
7Thu10:584.311:224.75:010.85:040.76:236:04Waning Gibbous7Thu
8Fri11:454.011:574.85:470.75:351.06:226:05Waning Gibbous8Fri
9Sat12:403.56:400.66:091.56:206:05Waning Gibbous9Sat
10Sun12:384.81:533.27:430.66:501.96:196:06Waning Gibbous10Sun
11Mon1:294.83:303.09:010.57:512.26:186:07Third Quarter11Mon
12Tue2:364.85:053.110:200.29:252.46:166:08Third Quarter12Tue
13Wed3:534.96:153.411:29-0.110:562.36:156:09Third Quarter13Wed
14Thu5:075.07:043.812:27-0.46:146:10Waning Crescent14Thu
15Fri6:135.27:444.212:091.91:16-0.76:126:10Waning Crescent15Fri
16Sat7:125.48:204.61:091.41:59-0.76:116:11Waning Crescent16Sat
17Sun8:045.58:564.92:020.92:39-0.76:096:12New Moon17Sun
18Mon8:535.49:315.12:500.53:18-0.46:086:13New Moon18Mon
19Tue9:415.110:065.23:380.23:55-0.16:076:14New Moon19Tue
20Wed10:304.810:425.34:250.04:320.46:056:15New Moon20Wed
21Thu11:204.311:195.25:130.05:080.96:046:15Waxing Crescent21Thu
22Fri12:133.96:010.15:451.46:026:16Waxing Crescent22Fri
23Sat1:133.56:530.36:221.86:016:17Waxing Crescent23Sat
24Sun12:384.72:293.27:530.57:072.35:596:18Waxing Crescent24Sun
25Mon1:274.44:053.19:050.68:152.65:586:19First Quarter25Mon
26Tue2:304.15:303.210:200.69:552.75:576:19First Quarter26Tue
27Wed3:474.06:283.411:240.611:172.55:556:20First Quarter27Wed
28Thu4:584.07:053.612:160.55:546:21First Quarter28Thu
29Fri5:584.27:333.812:152.212:570.45:526:22Waxing Gibbous29Fri
30Sat6:484.37:574.11:001.81:300.35:516:23Waxing Gibbous30Sat
31Sun7:314.48:214.31:381.52:000.35:506:23Waxing Gibbous31Sun
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