Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, June 19, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 8:41 pm (2.4 ft)
Next high tide : in 4h 34m at 3:32 pm (4.3 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:48 am
Moon phase : Waxing Crescent (28% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 2031

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:396.011:314.84:311.05:180.16:576:47Full Moon1Wed
2Thu11:145.95:071.56:050.16:586:45Waning Gibbous2Thu
3Fri12:244.511:50 AM5.85:442.06:540.26:596:44Waning Gibbous3Fri
4Sat1:204.112:295.56:212.47:450.47:006:43Waning Gibbous4Sat
5Sun2:253.81:115.27:022.88:430.77:016:41Waning Gibbous5Sun
6Mon3:473.72:014.87:533.19:510.97:016:40Third Quarter6Mon
7Tue5:153.73:084.59:163.311:010.97:026:38Third Quarter7Tue
8Wed6:213.94:304.311:013.27:036:37Third Quarter8Wed
9Thu7:074.15:434.312:011.012:162.97:046:36Third Quarter9Thu
10Fri7:394.36:454.412:500.91:102.57:056:34Waning Crescent10Fri
11Sat8:054.57:374.51:291.01:522.17:056:33Waning Crescent11Sat
12Sun8:294.88:224.62:021.02:301.67:066:32Waning Crescent12Sun
13Mon8:525.09:044.62:321.13:051.27:076:30Waning Crescent13Mon
14Tue9:155.39:454.63:001.23:410.87:086:29New Moon14Tue
15Wed9:405.610:274.53:281.44:180.47:096:28New Moon15Wed
16Thu10:085.811:134.43:571.74:590.17:106:27New Moon16Thu
17Fri10:406.04:291.95:43-0.17:106:25New Moon17Fri
18Sat12:044.211:15 AM6.05:032.26:31-0.27:116:24Waxing Crescent18Sat
19Sun1:004.011:56 AM5.95:432.57:23-0.27:126:23Waxing Crescent19Sun
20Mon2:043.912:455.76:302.88:22-0.17:136:22Waxing Crescent20Mon
21Tue3:203.81:445.47:323.09:280.07:146:20First Quarter21Tue
22Wed4:384.02:585.19:013.110:360.17:156:19First Quarter22Wed
23Thu5:404.34:264.810:472.911:380.27:166:18First Quarter23Thu
24Fri6:294.65:484.712:102.37:176:17First Quarter24Fri
25Sat7:115.07:014.712:320.41:151.77:176:16Waxing Gibbous25Sat
26Sun7:495.48:054.71:200.62:101.07:186:15Waxing Gibbous26Sun
27Mon8:245.89:014.72:030.82:580.47:196:14Waxing Gibbous27Mon
28Tue8:586.19:534.62:431.23:430.07:206:12Full Moon28Tue
29Wed9:316.210:424.53:201.54:26-0.37:216:11Full Moon29Wed
30Thu10:046.211:324.33:551.95:08-0.47:226:10Full Moon30Thu
31Fri10:376.14:312.25:50-0.37:236:09Full Moon31Fri
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 6:06 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 Waxing 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