Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 24m at 11:37 am (1.7 ft)
Next high tide : 6:28 pm (5.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:49 am
Moon phase : First Quarter (69% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jul 2038

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:193.69:415.94:37-0.53:252.65:528:21New Moon1Thu
2Fri12:013.65:14-0.74:042.75:528:21New Moon2Fri
3Sat12:433.75:52-0.94:482.75:538:21New Moon3Sat
4Sun1:243.86:31-0.95:372.75:538:21Waxing Crescent4Sun
5Mon2:073.97:10-0.86:322.75:548:21Waxing Crescent5Mon
6Tue12:255.52:514.17:51-0.67:362.75:548:20Waxing Crescent6Tue
7Wed1:175.03:374.38:34-0.28:542.55:558:20Waxing Crescent7Wed
8Thu2:204.54:234.79:200.210:232.15:568:20First Quarter8Thu
9Fri3:393.95:095.010:100.711:461.55:568:20First Quarter9Fri
10Sat5:113.55:545.511:011.25:578:19First Quarter10Sat
11Sun6:443.46:405.912:560.811:54 AM1.65:578:19Waxing Gibbous11Sun
12Mon8:073.47:276.21:570.112:492.05:588:19Waxing Gibbous12Mon
13Tue9:143.68:136.52:50-0.51:442.25:598:18Waxing Gibbous13Tue
14Wed10:093.88:586.63:38-1.02:372.35:598:18Full Moon14Wed
15Thu10:593.99:436.54:23-1.23:282.46:008:17Full Moon15Thu
16Fri11:454.010:266.45:07-1.24:172.46:018:17Full Moon16Fri
17Sat12:284.15:50-1.15:062.46:018:16Full Moon17Sat
18Sun1:104.16:30-0.95:572.56:028:16Waning Gibbous18Sun
19Mon1:524.27:09-0.56:492.56:038:15Waning Gibbous19Mon
20Tue12:385.22:334.27:46-0.17:442.56:038:15Waning Gibbous20Tue
21Wed1:244.63:164.38:230.48:512.56:048:14Waning Gibbous21Wed
22Thu2:164.04:004.49:010.910:132.36:058:14Third Quarter22Thu
23Fri3:253.54:434.59:411.411:362.06:058:13Third Quarter23Fri
24Sat4:563.15:254.710:261.96:068:12Third Quarter24Sat
25Sun6:343.06:064.912:451.611:15 AM2.26:078:11Third Quarter25Sun
26Mon8:003.16:475.21:401.112:052.56:088:11Waning Crescent26Mon
27Tue8:593.37:285.42:240.612:562.66:088:10Waning Crescent27Tue
28Wed9:413.58:075.73:020.21:452.76:098:09Waning Crescent28Wed
29Thu10:183.78:465.93:38-0.22:302.76:108:08Waning Crescent29Thu
30Fri10:523.89:256.14:13-0.53:132.66:118:07New Moon30Fri
31Sat11:273.910:046.24:49-0.73:562.56:118:07New Moon31Sat
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 3:02 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 transitional phase. Tonight's moon is 69% 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 shifting between spring and neap.

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 First Quarter (69% illuminated). This places Port San Luis, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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