Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, June 28, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 5:06 am (-0.6 ft)
Next high tide : in 4h 48m at 9:24 pm (5.7 ft)
Sunset today : 11:28 pm
Sunrise tomorrow : 8:58 am
Moon phase : Full Moon (98% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jun 2018

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:573.57:00-0.46:012.88:5611:18Waning Gibbous1Fri
2Sat12:015.02:513.57:41-0.36:472.98:5611:19Waning Gibbous2Sat
3Sun12:404.73:503.68:240.07:453.18:5611:20Waning Gibbous3Sun
4Mon1:234.44:443.79:110.29:083.18:5511:20Waning Gibbous4Mon
5Tue2:194.05:273.910:010.410:462.98:5511:21Third Quarter5Tue
6Wed3:343.76:034.210:500.68:5511:21Third Quarter6Wed
7Thu4:583.46:354.512:022.411:35 AM0.88:5511:22Third Quarter7Thu
8Fri6:163.47:054.912:591.912:181.08:5511:22Third Quarter8Fri
9Sat7:273.47:375.31:471.21:001.28:5511:23Waning Crescent9Sat
10Sun8:293.58:105.72:310.51:411.48:5411:23Waning Crescent10Sun
11Mon9:253.78:466.13:14-0.12:231.78:5411:24Waning Crescent11Mon
12Tue10:193.89:256.43:57-0.73:071.98:5411:24New Moon12Tue
13Wed11:133.910:076.64:43-1.23:522.08:5411:24New Moon13Wed
14Thu12:084.05:30-1.54:422.28:5411:25New Moon14Thu
15Fri1:044.06:20-1.65:372.38:5511:25Waxing Crescent15Fri
16Sat2:004.17:10-1.56:392.48:5511:26Waxing Crescent16Sat
17Sun12:365.92:584.28:01-1.27:492.58:5511:26Waxing Crescent17Sun
18Mon1:355.43:574.48:54-0.89:112.48:5511:26Waxing Crescent18Mon
19Tue2:424.74:524.79:50-0.310:422.18:5511:26First Quarter19Tue
20Wed4:014.15:435.010:460.28:5511:27First Quarter20Wed
21Thu5:263.76:295.212:031.611:39 AM0.78:5511:27First Quarter21Thu
22Fri6:503.57:125.51:121.112:291.28:5611:27Waxing Gibbous22Fri
23Sat8:063.57:505.62:100.51:161.68:5611:27Waxing Gibbous23Sat
24Sun9:083.58:255.72:570.11:591.98:5611:27Waxing Gibbous24Sun
25Mon10:003.68:585.83:39-0.22:382.28:5711:28Waxing Gibbous25Mon
26Tue10:463.69:295.84:16-0.43:132.48:5711:28Full Moon26Tue
27Wed11:293.610:015.74:52-0.53:482.58:5711:28Full Moon27Wed
28Thu12:093.75:27-0.64:232.68:5811:28Full Moon28Thu
29Fri12:483.76:02-0.55:012.78:5811:28Full Moon29Fri
30Sat1:273.76:37-0.45:422.88:5811:28Waning Gibbous30Sat
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 1:15 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 98% 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 (98% 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