Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Saturday, July 25, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 5h 11m at 3:00 am (0.0 ft)
Next high tide : 10:04 am (3.5 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 6:06 am
Moon phase : Waxing Gibbous (80% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jun 2080

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:113.59:375.94:33-0.73:172.55:498:12Full Moon1Sat
2Sun12:023.55:12-0.83:492.75:498:13Full Moon2Sun
3Mon12:513.45:50-0.84:232.95:488:14Full Moon3Mon
4Tue1:383.46:29-0.75:013.05:488:14Waning Gibbous4Tue
5Wed2:273.47:09-0.65:443.15:488:15Waning Gibbous5Wed
6Thu3:183.47:49-0.46:363.15:488:15Waning Gibbous6Thu
7Fri12:364.84:073.58:31-0.27:403.15:488:16Waning Gibbous7Fri
8Sat1:214.44:483.79:140.19:073.15:488:16Third Quarter8Sat
9Sun2:164.05:214.09:560.410:462.85:488:17Third Quarter9Sun
10Mon3:293.65:494.310:370.75:488:17Third Quarter10Mon
11Tue4:573.36:164.612:022.311:16 AM1.15:488:18Third Quarter11Tue
12Wed6:223.16:445.11:021.611:54 AM1.45:488:18Waning Crescent12Wed
13Thu7:443.17:155.51:510.912:321.85:488:18Waning Crescent13Thu
14Fri8:543.27:506.02:360.11:142.15:488:19Waning Crescent14Fri
15Sat9:533.48:296.43:20-0.61:592.45:488:19Waning Crescent15Sat
16Sun10:483.59:126.64:05-1.12:462.55:488:19New Moon16Sun
17Mon11:423.69:586.84:52-1.53:362.65:488:20New Moon17Mon
18Tue12:343.75:40-1.84:292.75:488:20New Moon18Tue
19Wed1:253.86:29-1.85:302.75:488:20Waxing Crescent19Wed
20Thu2:153.97:17-1.66:362.65:498:20Waxing Crescent20Thu
21Fri12:356.03:054.28:05-1.27:492.65:498:21Waxing Crescent21Fri
22Sat1:345.33:564.48:54-0.79:142.45:498:21First Quarter22Sat
23Sun2:424.64:434.89:43-0.110:462.05:498:21First Quarter23Sun
24Mon4:033.95:285.110:310.65:508:21First Quarter24Mon
25Tue5:343.46:105.412:081.411:18 AM1.25:508:21First Quarter25Tue
26Wed7:093.16:515.61:180.812:041.85:508:21Waxing Gibbous26Wed
27Thu8:353.27:305.82:150.212:502.35:518:21Waxing Gibbous27Thu
28Fri9:423.38:075.93:03-0.21:352.65:518:21Waxing Gibbous28Fri
29Sat10:353.48:445.93:45-0.52:192.85:528:21Waxing Gibbous29Sat
30Sun11:203.59:195.94:23-0.72:592.95:528:21Full Moon30Sun
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 6:32 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 80% 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 Waxing Gibbous (80% 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