Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, July 3, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 4h 11m at 7:17 am (-0.4 ft)
Next high tide : 2:14 pm (3.8 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:53 am
Moon phase : Waning Gibbous (87% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Nov 2005

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue8:415.89:564.12:261.83:400.16:245:08New Moon1Tue
2Wed9:066.010:483.92:512.24:21-0.26:255:07New Moon2Wed
3Thu9:366.111:473.83:192.55:06-0.46:265:06New Moon3Thu
4Fri10:106.13:492.85:55-0.56:275:05Waxing Crescent4Fri
5Sat12:553.610:52 AM6.04:243.16:51-0.46:285:04Waxing Crescent5Sat
6Sun2:203.611:43 AM5.75:113.47:54-0.46:295:03Waxing Crescent6Sun
7Mon3:483.712:485.46:283.69:02-0.36:305:03First Quarter7Mon
8Tue4:444.02:125.08:333.510:05-0.26:315:02First Quarter8Tue
9Wed5:234.33:454.710:233.110:590.06:325:01First Quarter9Wed
10Thu5:574.75:074.611:392.311:470.36:335:00Waxing Gibbous10Thu
11Fri6:295.26:204.512:391.56:344:59Waxing Gibbous11Fri
12Sat7:005.77:254.412:290.61:310.76:354:59Waxing Gibbous12Sat
13Sun7:306.18:244.31:071.02:180.16:364:58Waxing Gibbous13Sun
14Mon8:016.39:204.21:431.53:03-0.46:374:57Full Moon14Mon
15Tue8:326.510:154.12:172.03:46-0.76:384:57Full Moon15Tue
16Wed9:046.411:133.92:512.44:30-0.86:394:56Full Moon16Wed
17Thu9:376.33:252.85:14-0.76:404:55Full Moon17Thu
18Fri12:123.810:12 AM6.04:023.15:59-0.56:414:55Waning Gibbous18Fri
19Sat1:153.810:50 AM5.64:423.36:47-0.26:424:54Waning Gibbous19Sat
20Sun2:283.711:32 AM5.25:313.57:380.16:434:54Waning Gibbous20Sun
21Mon3:403.812:224.76:393.68:340.36:444:53Waning Gibbous21Mon
22Tue4:333.91:254.38:263.59:290.66:454:53Third Quarter22Tue
23Wed5:094.12:493.910:133.210:170.86:464:53Third Quarter23Wed
24Thu5:374.34:123.711:232.810:581.06:474:52Third Quarter24Thu
25Fri6:014.65:263.612:152.26:474:52Third Quarter25Fri
26Sat6:234.96:313.612:581.66:484:52Waning Crescent26Sat
27Sun6:455.37:303.612:051.51:350.96:494:51Waning Crescent27Sun
28Mon7:085.68:223.712:361.82:120.36:504:51Waning Crescent28Mon
29Tue7:346.09:123.71:072.12:49-0.26:514:51Waning Crescent29Tue
30Wed8:036.210:043.71:392.43:29-0.76:524:51New Moon30Wed
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 10:45 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 87% 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 Waning Gibbous (87% 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