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 5h 13m at 9:27 am (3.3 ft)
Sunset today : 11:19 pm
Sunrise tomorrow : 9:13 am
Moon phase : Waxing Gibbous (79% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 1988

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:473.62:265.38:023.310:400.310:059:53Third Quarter1Sat
2Sun6:263.83:474.99:543.511:530.310:059:52Third Quarter2Sun
3Mon7:264.15:144.811:463.410:069:50Third Quarter3Mon
4Tue8:034.26:264.812:530.312:573.010:079:49Third Quarter4Tue
5Wed8:304.47:234.81:400.41:462.510:089:47Waning Crescent5Wed
6Thu8:524.58:104.92:170.42:252.110:089:46Waning Crescent6Thu
7Fri9:114.78:514.82:470.62:591.710:099:45Waning Crescent7Fri
8Sat9:294.99:284.73:120.83:321.310:109:43Waning Crescent8Sat
9Sun9:475.110:064.63:331.14:051.010:119:42New Moon9Sun
10Mon10:065.310:454.43:541.54:390.710:129:41New Moon10Mon
11Tue10:265.511:284.14:151.85:160.510:129:39New Moon11Tue
12Wed10:485.64:362.25:550.410:139:38New Moon12Wed
13Thu12:163.911:13 AM5.64:582.56:380.310:149:37Waxing Crescent13Thu
14Fri1:133.611:43 AM5.65:192.87:280.310:159:35Waxing Crescent14Fri
15Sat2:273.412:205.55:403.18:270.410:169:34Waxing Crescent15Sat
16Sun1:095.39:400.310:179:33Waxing Crescent16Sun
17Mon2:195.110:520.210:189:32First Quarter17Mon
18Tue6:493.83:534.910:023.611:520.110:189:30First Quarter18Tue
19Wed7:114.15:224.911:483.210:199:29First Quarter19Wed
20Thu7:354.56:365.012:430.012:562.510:209:28Waxing Gibbous20Thu
21Fri8:025.07:425.11:260.11:521.710:219:27Waxing Gibbous21Fri
22Sat8:305.58:415.02:050.32:430.810:229:26Waxing Gibbous22Sat
23Sun8:596.09:374.92:420.63:310.110:239:24Full Moon23Sun
24Mon9:316.410:344.73:181.14:20-0.410:249:23Full Moon24Mon
25Tue10:056.611:324.43:531.65:09-0.710:259:22Full Moon25Tue
26Wed10:416.64:292.15:59-0.810:259:21Full Moon26Wed
27Thu12:354.111:19 AM6.55:072.66:51-0.710:269:20Waning Gibbous27Thu
28Fri1:433.912:026.15:503.07:47-0.510:279:19Waning Gibbous28Fri
29Sat3:033.812:495.66:403.38:48-0.110:289:18Waning Gibbous29Sat
30Sun3:343.812:465.16:483.58:560.29:298:17Third Quarter30Sun
31Mon4:464.02:004.68:403.610:020.49:308:16Third Quarter31Mon
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 transitional phase. Tonight's moon is 79% 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 Waxing Gibbous (79% 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