Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, July 24, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 12:33 pm (3.0 ft)
Next high tide : in 4h 59m at 9:27 am (3.3 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 - Mar 2079

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:045.49:403.92:012.13:12-0.86:315:58New Moon1Wed
2Thu8:435.510:044.12:401.83:41-0.86:305:59New Moon2Thu
3Fri9:225.410:294.43:211.44:11-0.66:296:00New Moon3Fri
4Sat10:055.210:574.74:051.14:40-0.36:276:01New Moon4Sat
5Sun10:524.711:274.94:540.85:090.26:266:02Waxing Crescent5Sun
6Mon11:454.15:470.65:390.86:256:03Waxing Crescent6Mon
7Tue12:015.112:493.56:460.46:101.46:236:03Waxing Crescent7Tue
8Wed12:415.22:193.07:580.36:442.06:226:04First Quarter8Wed
9Thu1:305.24:282.89:250.17:322.66:216:05First Quarter9Thu
10Fri2:365.26:293.110:50-0.29:212.96:196:06First Quarter10Fri
11Sat3:565.17:243.412:02-0.66:186:07First Quarter11Sat
12Sun6:155.28:593.71:59-0.97:167:08Waxing Gibbous12Sun
13Mon7:235.49:294.01:272.52:46-1.07:157:09Waxing Gibbous13Mon
14Tue8:205.59:574.22:252.03:26-1.07:147:09Waxing Gibbous14Tue
15Wed9:095.510:244.43:131.54:01-0.87:127:10Full Moon15Wed
16Thu9:535.310:504.63:561.24:32-0.57:117:11Full Moon16Thu
17Fri10:345.011:164.74:380.95:01-0.17:097:12Full Moon17Fri
18Sat11:164.611:424.85:190.65:270.47:087:13Full Moon18Sat
19Sun11:594.16:010.55:511.07:077:14Waning Gibbous19Sun
20Mon12:074.812:463.76:430.56:131.57:057:14Waning Gibbous20Mon
21Tue12:324.81:393.27:280.56:322.07:047:15Waning Gibbous21Tue
22Wed12:584.72:522.98:210.66:462.47:027:16Waning Gibbous22Wed
23Thu1:294.59:290.77:017:17Third Quarter23Thu
24Fri2:114.310:540.67:007:18Third Quarter24Fri
25Sat3:234.112:090.46:587:18Third Quarter25Sat
26Sun4:564.18:443.41:060.26:577:19Third Quarter26Sun
27Mon6:114.38:543.612:313.01:50-0.16:557:20Waning Crescent27Mon
28Tue7:104.69:093.81:262.62:26-0.36:547:21Waning Crescent28Tue
29Wed7:594.89:274.12:092.12:57-0.46:537:22Waning Crescent29Wed
30Thu8:444.99:474.42:491.63:27-0.46:517:23Waning Crescent30Thu
31Fri9:285.010:114.83:301.13:56-0.26:507:23New Moon31Fri
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 11:00 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