Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, July 28, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 3:36 pm (2.7 ft)
Next high tide : in 1h 29m at 11:23 am (3.7 ft)
Sunset today : 8:09 pm
Sunrise tomorrow : 6:09 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Nov 1976

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:285.16:324.312:491.66:245:08Waxing Gibbous1Mon
2Tue7:025.37:274.212:341.11:331.16:255:07Waxing Gibbous2Tue
3Wed7:305.48:134.21:111.42:110.76:265:06Waxing Gibbous3Wed
4Thu7:565.58:554.21:421.62:450.56:275:05Waxing Gibbous4Thu
5Fri8:215.69:354.12:111.93:180.36:285:04Full Moon5Fri
6Sat8:465.710:154.02:382.23:510.16:295:03Full Moon6Sat
7Sun9:125.710:583.93:062.44:250.06:305:03Full Moon7Sun
8Mon9:415.611:433.83:352.65:020.06:315:02Full Moon8Mon
9Tue10:125.54:082.85:400.16:325:01Waning Gibbous9Tue
10Wed12:323.810:46 AM5.34:442.96:210.26:335:00Waning Gibbous10Wed
11Thu1:273.711:25 AM5.15:293.17:070.36:344:59Waning Gibbous11Thu
12Fri2:303.812:124.86:273.27:570.56:354:59Waning Gibbous12Fri
13Sat3:303.91:144.47:513.28:530.66:364:58Third Quarter13Sat
14Sun4:174.22:364.19:323.09:480.86:374:57Third Quarter14Sun
15Mon4:564.54:044.010:512.510:390.96:384:57Third Quarter15Mon
16Tue5:315.05:234.011:521.711:261.16:394:56Waning Crescent16Tue
17Wed6:065.46:344.112:441.06:404:55Waning Crescent17Wed
18Thu6:435.97:364.212:121.21:330.26:414:55Waning Crescent18Thu
19Fri7:216.48:334.312:571.42:20-0.56:424:54Waning Crescent19Fri
20Sat8:016.79:274.41:421.73:07-1.06:434:54New Moon20Sat
21Sun8:436.910:224.42:271.93:55-1.36:444:53New Moon21Sun
22Mon9:276.911:194.33:142.14:45-1.46:454:53New Moon22Mon
23Tue10:146.64:052.35:35-1.26:464:53Waxing Crescent23Tue
24Wed12:164.311:04 AM6.25:022.56:26-0.96:474:52Waxing Crescent24Wed
25Thu1:154.311:58 AM5.66:052.67:19-0.56:484:52Waxing Crescent25Thu
26Fri2:174.412:585.07:192.78:140.06:484:52First Quarter26Fri
27Sat3:184.52:114.38:502.79:110.46:494:51First Quarter27Sat
28Sun4:144.73:353.910:212.310:070.96:504:51First Quarter28Sun
29Mon5:024.94:593.611:361.910:571.36:514:51First Quarter29Mon
30Tue5:435.16:153.512:341.36:524:51Waxing Gibbous30Tue
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 1:29 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 spring phase. Tonight's moon is 99% 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 (99% 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