Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Wednesday, August 12, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 2h 38m at 4:41 am (-1.2 ft)
Next high tide : 11:08 am (4.4 ft)
Sunset today : 11:01 pm
Sunrise tomorrow : 9:27 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Apr 2095

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:515.29:164.41:551.92:48-0.99:5510:31Waning Crescent1Fri
2Sat8:465.49:464.82:461.33:27-0.89:5410:32Waning Crescent2Sat
3Sun9:385.410:185.23:360.64:04-0.59:5210:33New Moon3Sun
4Mon10:305.210:525.54:250.14:41-0.19:5110:33New Moon4Mon
5Tue11:254.811:295.75:17-0.35:180.49:4910:34New Moon5Tue
6Wed12:234.36:10-0.65:561.09:4810:35Waxing Crescent6Wed
7Thu12:075.71:283.97:05-0.66:361.69:4710:36Waxing Crescent7Thu
8Fri12:495.62:443.58:05-0.57:202.29:4510:37Waxing Crescent8Fri
9Sat1:365.34:223.39:14-0.38:182.79:4410:37Waxing Crescent9Sat
10Sun2:324.96:013.410:31-0.29:583.09:4310:38First Quarter10Sun
11Mon3:474.57:133.711:45-0.111:462.89:4110:39First Quarter11Mon
12Tue5:124.37:583.912:47-0.19:4010:40First Quarter12Tue
13Wed6:264.28:304.11:022.51:38-0.19:3910:41Waxing Gibbous13Wed
14Thu7:274.38:564.21:542.12:180.09:3810:41Waxing Gibbous14Thu
15Fri8:164.39:184.32:351.72:510.29:3610:42Waxing Gibbous15Fri
16Sat8:584.39:384.53:101.33:180.49:3510:43Waxing Gibbous16Sat
17Sun9:364.29:574.73:420.93:420.69:3410:44Waxing Gibbous17Sun
18Mon10:134.110:184.84:150.64:050.99:3210:45Full Moon18Mon
19Tue10:524.010:395.04:490.34:281.39:3110:46Full Moon19Tue
20Wed11:343.811:025.15:240.14:511.69:3010:46Full Moon20Wed
21Thu12:213.66:020.05:151.99:2910:47Full Moon21Thu
22Fri1:143.36:44-0.15:402.39:2810:48Waning Gibbous22Fri
23Sat2:193.17:30-0.16:072.69:2610:49Waning Gibbous23Sat
24Sun12:315.03:503.18:25-0.16:402.99:2510:50Waning Gibbous24Sun
25Mon1:154.85:313.29:31-0.17:423.19:2410:50Third Quarter25Mon
26Tue2:174.66:303.410:41-0.29:563.29:2310:51Third Quarter26Tue
27Wed3:444.57:053.711:43-0.311:432.89:2210:52Third Quarter27Wed
28Thu5:134.47:354.112:37-0.49:2110:53Third Quarter28Thu
29Fri6:294.58:044.512:542.21:24-0.49:2010:54Waning Crescent29Fri
30Sat7:374.68:345.01:521.42:06-0.29:1910:55Waning Crescent30Sat
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 7:54 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 0% 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 New Moon (0% 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