Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, July 24, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 2h 54m at 12:33 pm (3.0 ft)
Next high tide : 7:11 pm (5.4 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 - May 1988

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:573.610:045.64:40-0.33:491.99:1710:55Full Moon1Sun
2Mon11:483.510:335.75:20-0.64:162.29:1610:56Full Moon2Mon
3Tue12:443.46:03-0.74:452.59:1510:57Full Moon3Tue
4Wed1:473.26:50-0.85:192.79:1410:58Waning Gibbous4Wed
5Thu3:013.27:42-0.86:032.99:1310:58Waning Gibbous5Thu
6Fri12:345.44:243.38:40-0.87:083.19:1310:59Waning Gibbous6Fri
7Sat1:335.15:243.59:44-0.68:533.19:1211:00Third Quarter7Sat
8Sun2:484.86:063.810:46-0.510:502.89:1111:01Third Quarter8Sun
9Mon4:174.46:424.211:40-0.39:1011:02Third Quarter9Mon
10Tue5:414.27:144.712:152.212:29-0.19:0911:02Third Quarter10Tue
11Wed6:594.17:475.21:221.41:120.39:0811:03Waning Crescent11Wed
12Thu8:094.08:195.72:180.51:530.79:0711:04Waning Crescent12Thu
13Fri9:123.98:526.03:08-0.22:311.29:0611:05Waning Crescent13Fri
14Sat10:113.89:256.23:54-0.73:081.69:0611:06New Moon14Sat
15Sun11:083.710:006.24:40-1.13:452.09:0511:06New Moon15Sun
16Mon12:073.65:26-1.24:222.49:0411:07New Moon16Mon
17Tue1:053.56:12-1.15:032.79:0311:08New Moon17Tue
18Wed2:053.56:58-1.05:472.99:0311:09Waxing Crescent18Wed
19Thu3:103.47:45-0.76:383.09:0211:09Waxing Crescent19Thu
20Fri12:395.04:173.58:35-0.47:413.19:0111:10Waxing Crescent20Fri
21Sat1:284.65:113.69:28-0.19:113.19:0111:11First Quarter21Sat
22Sun2:284.15:523.810:210.210:532.99:0011:12First Quarter22Sun
23Mon3:433.76:244.011:080.59:0011:12First Quarter23Mon
24Tue5:033.56:514.312:092.511:49 AM0.88:5911:13First Quarter24Tue
25Wed6:183.37:154.61:071.912:241.18:5911:14First Quarter25Wed
26Thu7:283.27:384.91:531.312:561.48:5811:15Waxing Gibbous26Thu
27Fri8:293.28:035.22:340.71:281.78:5811:15Waxing Gibbous27Fri
28Sat9:243.38:295.63:110.21:592.08:5711:16Waxing Gibbous28Sat
29Sun10:153.48:595.83:48-0.32:322.38:5711:17Full Moon29Sun
30Mon11:063.49:326.14:27-0.83:072.58:5711:17Full Moon30Mon
31Tue11:593.410:096.25:09-1.13:452.78:5611:18Full Moon31Tue
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 3:52 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 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