Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 1h 34m at 11:37 am (1.7 ft)
Next high tide : 6:28 pm (5.3 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:49 am
Moon phase : First Quarter (69% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jun 2038

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:413.59:355.54:19-0.13:192.15:498:12New Moon1Tue
2Wed11:263.510:035.64:54-0.33:502.35:498:12New Moon2Wed
3Thu12:133.55:30-0.54:222.55:498:13New Moon3Thu
4Fri1:033.56:09-0.64:582.75:488:14New Moon4Fri
5Sat1:543.56:50-0.75:402.95:488:14Waxing Crescent5Sat
6Sun2:503.57:33-0.66:313.05:488:15Waxing Crescent6Sun
7Mon12:315.23:473.78:19-0.57:373.15:488:15Waxing Crescent7Mon
8Tue1:234.94:383.99:10-0.49:043.05:488:16First Quarter8Tue
9Wed2:284.55:214.210:03-0.110:412.65:488:16First Quarter9Wed
10Thu3:494.15:594.610:550.15:488:17First Quarter10Thu
11Fri5:163.86:375.112:012.011:44 AM0.55:488:17First Quarter11Fri
12Sat6:393.77:155.61:071.212:320.85:488:18Waxing Gibbous12Sat
13Sun7:563.77:536.02:040.41:191.25:488:18Waxing Gibbous13Sun
14Mon9:033.78:336.42:55-0.32:051.55:488:18Waxing Gibbous14Mon
15Tue10:033.89:146.63:44-0.92:511.85:488:19Full Moon15Tue
16Wed11:013.99:556.64:32-1.33:372.15:488:19Full Moon16Wed
17Thu11:573.910:396.55:20-1.54:262.35:488:19Full Moon17Thu
18Fri12:523.96:08-1.55:172.55:488:20Full Moon18Fri
19Sat1:463.96:54-1.36:132.75:488:20Waning Gibbous19Sat
20Sun12:115.72:404.07:41-0.97:122.85:488:20Waning Gibbous20Sun
21Mon1:005.23:354.08:28-0.58:202.85:498:20Waning Gibbous21Mon
22Tue1:534.64:284.29:16-0.19:452.75:498:21Third Quarter22Tue
23Wed2:554.05:144.310:040.411:132.55:498:21Third Quarter23Wed
24Thu4:113.65:554.510:510.85:498:21Third Quarter24Thu
25Fri5:343.36:304.712:272.011:35 AM1.35:508:21Third Quarter25Fri
26Sat6:543.17:035.01:261.512:161.65:508:21Waning Crescent26Sat
27Sun8:073.27:345.22:121.012:551.95:508:21Waning Crescent27Sun
28Mon9:053.38:045.42:510.51:332.25:518:21Waning Crescent28Mon
29Tue9:533.48:355.63:270.12:102.45:518:21Waning Crescent29Tue
30Wed10:373.59:075.84:02-0.22:472.55:528:21New Moon30Wed
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 3:02 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 69% 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 First Quarter (69% 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