Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Thursday, June 25, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 1:02 pm (2.5 ft)
Next high tide : in 6h 32m at 9:12 am (3.1 ft)
Sunset today : 11:28 pm
Sunrise tomorrow : 8:57 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - May 2029

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:133.77:24-1.36:382.49:1710:55Waning Gibbous1Tue
2Wed12:465.63:243.68:21-0.97:432.79:1610:56Waning Gibbous2Wed
3Thu1:435.14:353.79:22-0.59:092.79:1510:57Third Quarter3Thu
4Fri2:514.55:363.910:25-0.210:512.69:1410:58Third Quarter4Fri
5Sat4:124.16:244.111:230.29:1310:59Third Quarter5Sat
6Sun5:323.87:034.312:132.212:130.59:1210:59Third Quarter6Sun
7Mon6:453.67:354.61:161.712:570.89:1211:00Waning Crescent7Mon
8Tue7:493.58:024.82:061.21:341.19:1111:01Waning Crescent8Tue
9Wed8:433.58:275.02:460.72:061.49:1011:02Waning Crescent9Wed
10Thu9:303.58:515.23:210.32:341.79:0911:03Waning Crescent10Thu
11Fri10:133.59:165.43:550.03:021.99:0811:03New Moon11Fri
12Sat10:563.59:435.54:29-0.33:302.29:0711:04New Moon12Sat
13Sun11:403.510:125.55:04-0.43:592.39:0611:05New Moon13Sun
14Mon12:263.45:41-0.64:312.59:0611:06New Moon14Mon
15Tue1:143.46:20-0.65:062.69:0511:07Waxing Crescent15Tue
16Wed2:063.37:01-0.65:482.89:0411:07Waxing Crescent16Wed
17Thu3:023.47:44-0.56:412.99:0311:08Waxing Crescent17Thu
18Fri12:435.03:583.58:31-0.47:502.99:0311:09Waxing Crescent18Fri
19Sat1:374.74:453.79:21-0.29:232.89:0211:10First Quarter19Sat
20Sun2:464.35:254.110:130.110:582.49:0111:10First Quarter20Sun
21Mon4:113.96:024.511:040.39:0111:11First Quarter21Mon
22Tue5:383.76:385.112:141.711:51 AM0.79:0011:12First Quarter22Tue
23Wed7:003.67:165.61:170.912:381.09:0011:13Waxing Gibbous23Wed
24Thu8:143.67:556.12:130.01:241.38:5911:13Waxing Gibbous24Thu
25Fri9:193.78:366.43:03-0.72:111.78:5911:14Waxing Gibbous25Fri
26Sat10:173.89:196.63:52-1.22:581.98:5811:15Full Moon26Sat
27Sun11:143.810:026.64:41-1.63:452.18:5811:15Full Moon27Sun
28Mon12:093.85:30-1.74:352.38:5711:16Full Moon28Mon
29Tue1:043.96:18-1.65:292.48:5711:17Waning Gibbous29Tue
30Wed1:573.97:06-1.36:282.58:5711:17Waning Gibbous30Wed
31Thu12:265.62:523.97:54-0.97:312.68:5611:18Waning 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 11:07 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 84% 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 Waxing Gibbous (84% 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