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 : 11:18 pm (1.0 ft)
Next high tide : in 5h 06m at 3:35 pm (5.3 ft)
Sunset today : 11:09 pm
Sunrise tomorrow : 9:22 am
Moon phase : Third Quarter (55% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Dec 2084

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:124.011:34 AM6.05:322.87:07-0.910:007:57Waxing Crescent1Fri
2Sat2:084.212:355.36:482.87:59-0.410:017:57Waxing Crescent2Sat
3Sun3:034.51:484.68:202.68:530.110:027:57First Quarter3Sun
4Mon3:544.83:174.09:582.29:470.610:037:57First Quarter4Mon
5Tue4:405.24:493.611:191.510:381.210:047:57First Quarter5Tue
6Wed5:235.66:173.512:250.810:047:57Waxing Gibbous6Wed
7Thu6:035.87:333.51:190.210:057:57Waxing Gibbous7Thu
8Fri6:426.08:343.612:132.12:06-0.310:067:57Waxing Gibbous8Fri
9Sat7:186.19:253.712:572.42:47-0.610:077:58Waxing Gibbous9Sat
10Sun7:536.210:103.81:382.63:25-0.710:077:58Full Moon10Sun
11Mon8:276.110:533.82:162.84:02-0.810:087:58Full Moon11Mon
12Tue9:016.011:323.82:532.94:38-0.710:097:58Full Moon12Tue
13Wed9:355.83:302.95:13-0.610:097:58Full Moon13Wed
14Thu12:103.710:11 AM5.64:102.95:48-0.410:107:59Waning Gibbous14Thu
15Fri12:483.810:47 AM5.24:542.96:21-0.210:117:59Waning Gibbous15Fri
16Sat1:283.811:25 AM4.95:453.06:550.110:117:59Waning Gibbous16Sat
17Sun2:093.912:084.46:443.07:290.510:128:00Waning Gibbous17Sun
18Mon2:504.112:593.98:022.98:040.910:138:00Third Quarter18Mon
19Tue3:284.32:133.39:362.68:431.310:138:01Third Quarter19Tue
20Wed4:034.63:533.010:552.09:261.710:148:01Third Quarter20Wed
21Thu4:384.95:332.911:561.310:122.010:148:02Third Quarter21Thu
22Fri5:155.37:003.012:460.610:158:02Waning Crescent22Fri
23Sat5:545.78:023.31:31-0.110:158:03Waning Crescent23Sat
24Sun6:366.18:523.52:14-0.710:158:03Waning Crescent24Sun
25Mon7:216.59:373.712:492.62:56-1.310:168:04Waning Crescent25Mon
26Tue8:076.810:213.81:422.53:40-1.610:168:05New Moon26Tue
27Wed8:546.911:044.02:352.44:24-1.710:168:05New Moon27Wed
28Thu9:436.711:484.23:302.35:09-1.710:178:06New Moon28Thu
29Fri10:346.44:292.25:52-1.410:178:07Waxing Crescent29Fri
30Sat12:334.411:28 AM5.85:332.26:35-0.910:178:07Waxing Crescent30Sat
31Sun1:184.612:265.06:432.07:17-0.310:178:08Waxing Crescent31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9412110)

Common Questions About Port San Luis, CA Tides

Show All
What time does the tide turn (slack tide) in Port San Luis, CA today?

Slack tide in Port San Luis, CA is approximately 7:26 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 neap phase. Tonight's moon is 55% 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 (55% 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