Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Wednesday, August 5, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 8:30 am (2.0 ft)
Next high tide : in 1h 32m at 3:31 am (3.2 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 6:15 am
Moon phase : Third Quarter (53% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - May 1962

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue8:344.69:025.52:380.62:420.16:117:48Waning Crescent1Tue
2Wed9:304.69:375.83:270.03:220.46:107:49New Moon2Wed
3Thu10:244.510:146.04:16-0.54:020.86:097:50New Moon3Thu
4Fri11:204.310:516.05:04-0.94:421.26:087:50New Moon4Fri
5Sat12:184.15:53-1.05:251.66:077:51New Moon5Sat
6Sun1:183.96:43-1.06:102.16:067:52Waxing Crescent6Sun
7Mon12:135.62:243.77:34-0.86:592.46:057:53Waxing Crescent7Mon
8Tue12:585.23:383.68:29-0.57:592.76:047:54Waxing Crescent8Tue
9Wed1:484.74:543.79:29-0.29:242.96:037:54First Quarter9Wed
10Thu2:504.25:573.810:330.111:032.86:037:55First Quarter10Thu
11Fri4:073.96:454.011:320.36:027:56First Quarter11Fri
12Sat5:263.77:224.212:212.412:230.56:017:57First Quarter12Sat
13Sun6:353.67:524.41:182.01:060.76:007:58Waxing Gibbous13Sun
14Mon7:353.78:184.62:031.61:420.85:597:58Waxing Gibbous14Mon
15Tue8:253.78:414.92:411.12:141.05:587:59Waxing Gibbous15Tue
16Wed9:103.79:055.13:150.72:431.35:588:00Waxing Gibbous16Wed
17Thu9:533.79:305.33:490.33:121.55:578:01Full Moon17Thu
18Fri10:363.79:565.44:240.03:411.75:568:02Full Moon18Fri
19Sat11:213.710:245.55:01-0.34:112.05:568:02Full Moon19Sat
20Sun12:093.65:40-0.54:452.25:558:03Full Moon20Sun
21Mon1:013.66:22-0.75:232.45:548:04Waning Gibbous21Mon
22Tue1:583.57:06-0.76:072.65:548:05Waning Gibbous22Tue
23Wed12:155.43:013.67:55-0.77:032.85:538:05Waning Gibbous23Wed
24Thu1:045.14:073.78:49-0.58:182.95:538:06Waning Gibbous24Thu
25Fri2:054.85:044.09:48-0.49:572.85:528:07Third Quarter25Fri
26Sat3:224.45:524.310:47-0.211:292.35:528:07Third Quarter26Sat
27Sun4:494.16:344.711:420.05:518:08Third Quarter27Sun
28Mon6:114.07:145.212:411.712:320.35:518:09Waning Crescent28Mon
29Tue7:263.97:525.61:430.91:200.65:508:09Waning Crescent29Tue
30Wed8:334.08:306.02:360.22:050.95:508:10Waning Crescent30Wed
31Thu9:334.09:076.23:24-0.42:481.25:498:11Waning Crescent31Thu
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 6:00 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 53% 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 (53% 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