Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 6:46 am (-0.6 ft)
Next high tide : in 2h 59m at 11:09 pm (5.5 ft)
Sunset today : 11:28 pm
Sunrise tomorrow : 8:59 am
Moon phase : Full Moon (97% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - May 2015

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri9:283.99:235.03:290.63:061.29:1810:55Waxing Gibbous1Fri
2Sat10:083.99:485.24:020.23:341.49:1710:56Full Moon2Sat
3Sun10:493.810:145.34:370.04:031.69:1610:56Full Moon3Sun
4Mon11:323.710:445.45:14-0.34:331.89:1510:57Full Moon4Mon
5Tue12:183.75:53-0.45:062.09:1410:58Full Moon5Tue
6Wed1:093.66:34-0.55:442.39:1310:59Waning Gibbous6Wed
7Thu2:053.57:20-0.56:292.59:1211:00Waning Gibbous7Thu
8Fri12:355.13:093.58:09-0.47:252.69:1111:00Waning Gibbous8Fri
9Sat1:264.84:163.69:06-0.38:442.79:1011:01Waning Gibbous9Sat
10Sun2:314.55:153.910:07-0.110:242.59:0911:02Third Quarter10Sun
11Mon3:534.26:044.311:070.011:492.19:0911:03Third Quarter11Mon
12Tue5:184.16:474.712:020.19:0811:04Third Quarter12Tue
13Wed6:374.07:285.112:581.412:530.39:0711:04Waning Crescent13Wed
14Thu7:474.18:075.61:560.71:400.59:0611:05Waning Crescent14Thu
15Fri8:494.18:455.92:480.02:250.89:0511:06Waning Crescent15Fri
16Sat9:454.29:246.23:36-0.63:081.19:0511:07New Moon16Sat
17Sun10:404.110:036.24:23-0.93:511.49:0411:08New Moon17Sun
18Mon11:344.110:436.15:09-1.14:351.79:0311:08New Moon18Mon
19Tue12:294.05:56-1.15:212.09:0211:09New Moon19Tue
20Wed1:243.96:43-1.06:102.39:0211:10Waxing Crescent20Wed
21Thu12:075.52:213.87:29-0.77:032.59:0111:11Waxing Crescent21Thu
22Fri12:525.03:233.88:17-0.48:042.79:0111:11Waxing Crescent22Fri
23Sat1:424.54:243.99:090.09:242.79:0011:12Waxing Crescent23Sat
24Sun2:404.05:194.010:030.310:542.59:0011:13First Quarter24Sun
25Mon3:543.66:044.210:560.78:5911:14First Quarter25Mon
26Tue5:133.46:424.412:092.211:44 AM0.98:5911:14First Quarter26Tue
27Wed6:273.37:154.61:081.812:271.28:5811:15First Quarter27Wed
28Thu7:323.37:454.91:551.31:061.48:5811:16Waxing Gibbous28Thu
29Fri8:283.48:135.12:340.81:421.68:5711:16Waxing Gibbous29Fri
30Sat9:153.58:425.43:100.42:161.78:5711:17Waxing Gibbous30Sat
31Sun9:593.59:115.63:450.02:511.98:5611:18Waxing 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 2:57 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 97% 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 (97% 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