Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 4:19 pm (2.9 ft)
Next high tide : in 19m at 12:36 pm (3.5 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:52 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Feb 2010

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon10:595.55:051.15:39-0.67:015:31Waning Gibbous1Mon
2Tue12:075.011:55 AM4.76:051.06:160.17:015:32Waning Gibbous2Tue
3Wed12:495.212:573.97:120.96:540.87:005:33Waning Gibbous3Wed
4Thu1:365.22:173.28:290.87:341.56:595:34Third Quarter4Thu
5Fri2:295.24:072.89:570.68:262.16:585:35Third Quarter5Fri
6Sat3:315.16:122.911:190.39:452.66:575:36Third Quarter6Sat
7Sun4:355.17:363.212:270.06:565:37Third Quarter7Sun
8Mon5:385.18:203.41:20-0.36:555:38Waning Crescent8Mon
9Tue6:335.28:503.612:242.72:03-0.56:545:39Waning Crescent9Tue
10Wed7:195.39:153.71:162.52:38-0.66:535:40Waning Crescent10Wed
11Thu7:585.49:383.81:562.33:08-0.66:525:41Waning Crescent11Thu
12Fri8:325.310:003.92:312.03:35-0.56:515:42New Moon12Fri
13Sat9:055.210:224.03:051.84:01-0.36:505:43New Moon13Sat
14Sun9:385.010:454.23:401.74:25-0.16:495:44New Moon14Sun
15Mon10:124.811:094.34:171.54:490.26:485:45New Moon15Mon
16Tue10:484.411:344.54:571.45:120.56:475:46Waxing Crescent16Tue
17Wed11:273.95:391.35:340.96:465:47Waxing Crescent17Wed
18Thu12:014.612:133.46:271.25:561.46:455:48Waxing Crescent18Thu
19Fri12:314.71:152.97:261.26:181.86:445:49Waxing Crescent19Fri
20Sat1:094.72:582.68:451.06:422.26:435:50First Quarter20Sat
21Sun2:014.810:140.76:415:51First Quarter21Sun
22Mon3:104.97:022.911:280.29:302.86:405:52First Quarter22Mon
23Tue4:245.17:333.212:27-0.36:395:53Waxing Gibbous23Tue
24Wed5:335.58:013.51:14-0.86:385:54Waxing Gibbous24Wed
25Thu6:355.88:303.912:242.31:56-1.16:375:54Waxing Gibbous25Thu
26Fri7:316.09:004.31:241.82:35-1.26:355:55Waxing Gibbous26Fri
27Sat8:226.09:324.72:181.23:13-1.16:345:56Full Moon27Sat
28Sun9:125.810:065.03:100.73:49-0.86:335:57Full Moon28Sun
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 2:27 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 spring phase. Tonight's moon is 99% 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 Full Moon (99% 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