Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 1h 32m at 11:06 am (2.2 ft)
Next high tide : 6:04 pm (5.8 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:56 am
Moon phase : Waning Crescent (28% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:014.11:175.37:102.48:320.66:586:46Waning Gibbous1Tue
2Wed3:173.92:085.08:012.89:410.86:596:45Third Quarter2Wed
3Thu4:463.83:124.69:153.010:540.96:596:43Third Quarter3Thu
4Fri6:043.94:304.410:533.111:590.97:006:42Third Quarter4Fri
5Sat7:014.15:434.412:112.97:016:41Third Quarter5Sat
6Sun7:414.36:454.512:520.91:082.57:026:39Waning Crescent6Sun
7Mon8:114.57:374.61:350.91:522.27:036:38Waning Crescent7Mon
8Tue8:374.78:204.72:100.92:291.87:036:36Waning Crescent8Tue
9Wed9:014.99:004.72:411.03:041.47:046:35Waning Crescent9Wed
10Thu9:245.19:384.73:091.13:371.17:056:34New Moon10Thu
11Fri9:485.310:174.73:361.24:120.87:066:32New Moon11Fri
12Sat10:145.510:584.64:041.44:500.57:076:31New Moon12Sat
13Sun10:425.611:434.44:331.75:300.37:076:30New Moon13Sun
14Mon11:145.75:041.96:140.27:086:29Waxing Crescent14Mon
15Tue12:344.211:50 AM5.65:392.27:020.27:096:27Waxing Crescent15Tue
16Wed1:314.012:325.56:192.57:560.27:106:26Waxing Crescent16Wed
17Thu2:403.81:225.37:092.89:000.37:116:25Waxing Crescent17Thu
18Fri4:013.82:275.18:203.010:100.37:126:23First Quarter18Fri
19Sat5:164.03:504.910:013.011:170.37:136:22First Quarter19Sat
20Sun6:134.45:144.811:342.77:136:21First Quarter20Sun
21Mon6:594.86:304.912:150.312:462.17:146:20Waxing Gibbous21Mon
22Tue7:405.27:364.91:070.31:441.47:156:19Waxing Gibbous22Tue
23Wed8:175.68:345.01:530.52:360.87:166:17Waxing Gibbous23Wed
24Thu8:525.99:284.92:350.73:230.37:176:16Waxing Gibbous24Thu
25Fri9:276.110:184.83:151.04:08-0.17:186:15Full Moon25Fri
26Sat10:026.211:094.63:531.34:53-0.37:196:14Full Moon26Sat
27Sun9:376.211:014.43:311.74:37-0.36:205:13Full Moon27Sun
28Mon10:146.011:564.24:102.15:23-0.36:215:12Waning Gibbous28Mon
29Tue10:515.74:512.56:090.06:225:11Waning Gibbous29Tue
30Wed12:544.011:31 AM5.35:352.86:580.26:235:10Waning Gibbous30Wed
31Thu2:003.912:164.96:263.07:520.56:235:09Waning Gibbous31Thu
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 2:35 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 28% 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 Waning Crescent (28% 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