Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, July 3, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 7:49 am (-0.1 ft)
Next high tide (tomorrow) : in 5h 10m at 12:25 am (4.9 ft)
Sunset today : 11:27 pm
Sunrise tomorrow : 9:00 am
Moon phase : Waning Gibbous (88% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Mar 2042

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:445.18:273.71:27-0.69:389:05Waxing Gibbous1Sat
2Sun6:445.28:553.812:512.62:09-0.79:379:06Waxing Gibbous2Sun
3Mon7:325.29:203.91:402.32:45-0.79:359:07Waxing Gibbous3Mon
4Tue8:135.39:424.02:182.03:15-0.69:349:08Waxing Gibbous4Tue
5Wed8:495.210:034.12:531.73:42-0.49:339:09Full Moon5Wed
6Thu9:235.010:244.23:271.54:06-0.19:319:09Full Moon6Thu
7Fri9:574.710:454.34:021.34:280.29:309:10Full Moon7Fri
8Sat10:324.411:074.44:381.14:490.69:299:11Full Moon8Sat
9Sun12:114.06:171.06:091.010:2710:12Waning Gibbous9Sun
10Mon12:294.512:543.57:000.96:271.510:2610:13Waning Gibbous10Mon
11Tue12:524.61:483.17:480.96:431.910:2510:14Waning Gibbous11Tue
12Wed1:204.63:112.78:490.96:532.310:2310:15Waning Gibbous12Wed
13Thu1:554.610:120.810:2210:15Third Quarter13Thu
14Fri2:504.511:370.510:2010:16Third Quarter14Fri
15Sat4:124.58:493.212:440.010:1910:17Third Quarter15Sat
16Sun5:364.88:523.41:37-0.410:1810:18Third Quarter16Sun
17Mon6:455.19:093.712:422.82:20-0.810:1610:19Waning Crescent17Mon
18Tue7:455.49:314.01:442.32:59-1.010:1510:20Waning Crescent18Tue
19Wed8:395.69:574.42:371.73:35-1.110:1310:20Waning Crescent19Wed
20Thu9:295.710:264.83:261.14:10-0.910:1210:21New Moon20Thu
21Fri10:205.510:585.24:160.54:45-0.510:1110:22New Moon21Fri
22Sat11:135.011:325.55:080.05:200.110:0910:23New Moon22Sat
23Sun12:104.56:02-0.35:550.710:0810:24Waxing Crescent23Sun
24Mon12:095.71:123.96:59-0.46:311.410:0610:24Waxing Crescent24Mon
25Tue12:495.72:283.48:00-0.47:092.010:0510:25Waxing Crescent25Tue
26Wed1:335.44:123.19:11-0.37:542.610:0410:26First Quarter26Wed
27Thu2:285.16:113.210:34-0.29:183.010:0210:27First Quarter27Thu
28Fri3:424.77:343.511:54-0.211:253.010:0110:28First Quarter28Fri
29Sat5:094.58:183.71:00-0.39:5910:28First Quarter29Sat
30Sun6:264.58:483.912:532.71:52-0.39:5810:29Waxing Gibbous30Sun
31Mon7:284.69:134.01:512.32:33-0.39:5710:30Waxing Gibbous31Mon
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 4:07 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 88% 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 (88% 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