Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, July 5, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 5h 50m at 8:20 am (0.3 ft)
Next high tide : 3:21 pm (4.2 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:54 am
Moon phase : Waning Gibbous (71% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jun 2002

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat2:174.45:303.910:020.010:333.05:498:12Third Quarter1Sat
2Sun3:283.96:114.110:540.311:562.65:498:12Third Quarter2Sun
3Mon4:493.66:454.311:400.65:498:13Third Quarter3Mon
4Tue6:053.47:134.612:592.112:210.95:488:13Third Quarter4Tue
5Wed7:153.37:394.81:491.612:571.25:488:14Waning Crescent5Wed
6Thu8:163.38:045.12:291.01:301.55:488:15Waning Crescent6Thu
7Fri9:093.48:295.43:050.52:021.85:488:15Waning Crescent7Fri
8Sat9:583.48:565.63:400.12:342.15:488:16Waning Crescent8Sat
9Sun10:453.59:255.84:16-0.33:062.35:488:16New Moon9Sun
10Mon11:343.59:575.94:53-0.63:402.55:478:17New Moon10Mon
11Tue12:243.55:33-0.94:182.75:478:17New Moon11Tue
12Wed1:153.56:15-1.05:012.85:478:17New Moon12Wed
13Thu2:073.66:59-1.05:522.95:478:18Waxing Crescent13Thu
14Fri3:013.77:45-1.06:543.05:478:18Waxing Crescent14Fri
15Sat12:505.43:543.98:34-0.88:103.05:488:19Waxing Crescent15Sat
16Sun1:505.04:424.29:25-0.59:442.75:488:19First Quarter16Sun
17Mon3:024.45:254.610:17-0.111:152.25:488:19First Quarter17Mon
18Tue4:284.06:055.011:080.35:488:20First Quarter18Tue
19Wed5:563.66:445.512:311.511:56 AM0.85:488:20Waxing Gibbous19Wed
20Thu7:203.57:245.91:350.712:431.25:488:20Waxing Gibbous20Thu
21Fri8:363.58:036.22:30-0.11:301.75:488:20Waxing Gibbous21Fri
22Sat9:403.68:436.43:20-0.72:162.05:498:20Waxing Gibbous22Sat
23Sun10:373.79:236.54:06-1.13:022.35:498:21Full Moon23Sun
24Mon11:323.710:036.44:51-1.33:472.55:498:21Full Moon24Mon
25Tue12:233.85:36-1.34:332.75:508:21Full Moon25Tue
26Wed1:113.86:19-1.15:222.85:508:21Waning Gibbous26Wed
27Thu1:583.87:01-0.96:132.85:508:21Waning Gibbous27Thu
28Fri12:095.42:453.87:42-0.67:072.95:518:21Waning Gibbous28Fri
29Sat12:535.03:333.98:23-0.28:102.95:518:21Waning Gibbous29Sat
30Sun1:414.44:184.09:040.29:302.85:518:21Third Quarter30Sun
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 11:50 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 transitional phase. Tonight's moon is 71% 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 Waning Gibbous (71% 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