Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 2h 48m at 9:19 am (-0.2 ft)
Next high tide : 4:21 pm (4.6 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:48 am
Moon phase : First Quarter (38% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Oct 2022

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:433.51:585.57:153.010:070.36:586:47First Quarter1Sat
2Sun5:433.53:115.48:223.411:250.16:586:45First Quarter2Sun
3Mon7:023.84:405.310:363.56:596:44First Quarter3Mon
4Tue7:454.16:015.412:32-0.212:133.17:006:42Waxing Gibbous4Tue
5Wed8:184.57:105.51:27-0.31:212.57:016:41Waxing Gibbous5Wed
6Thu8:484.88:105.62:13-0.32:161.97:026:40Waxing Gibbous6Thu
7Fri9:175.19:025.62:53-0.23:041.37:026:38Waxing Gibbous7Fri
8Sat9:455.49:515.43:290.13:500.97:036:37Full Moon8Sat
9Sun10:145.610:405.04:020.54:350.57:046:36Full Moon9Sun
10Mon10:435.811:294.74:341.05:190.37:056:34Full Moon10Mon
11Tue11:125.85:041.66:040.27:066:33Waning Gibbous11Tue
12Wed12:234.311:41 AM5.75:332.16:500.27:066:32Waning Gibbous12Wed
13Thu1:223.912:115.56:022.67:390.47:076:30Waning Gibbous13Thu
14Fri2:353.712:455.26:313.18:360.67:086:29Waning Gibbous14Fri
15Sat4:233.61:254.97:033.49:460.77:096:28Third Quarter15Sat
16Sun2:244.611:010.87:106:26Third Quarter16Sun
17Mon7:153.93:564.310:543.77:116:25Third Quarter17Mon
18Tue7:424.15:224.312:040.712:193.37:116:24Third Quarter18Tue
19Wed8:034.36:284.412:530.61:102.97:126:23Waning Crescent19Wed
20Thu8:224.57:224.61:320.61:502.47:136:21Waning Crescent20Thu
21Fri8:414.78:094.72:050.62:261.97:146:20Waning Crescent21Fri
22Sat9:005.08:524.72:330.73:011.47:156:19Waning Crescent22Sat
23Sun9:205.39:364.73:000.93:370.97:166:18New Moon23Sun
24Mon9:425.610:214.63:271.24:160.47:176:17New Moon24Mon
25Tue10:085.911:114.43:541.54:580.07:186:16New Moon25Tue
26Wed10:376.14:241.95:44-0.37:196:14New Moon26Wed
27Thu12:074.111:10 AM6.24:552.36:35-0.57:196:13Waxing Crescent27Thu
28Fri1:113.911:50 AM6.25:302.77:30-0.57:206:12Waxing Crescent28Fri
29Sat2:283.712:376.06:133.18:34-0.47:216:11Waxing Crescent29Sat
30Sun4:043.71:365.67:123.49:46-0.37:226:10First Quarter30Sun
31Mon5:283.92:545.28:553.510:57-0.27:236:09First Quarter31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9412110)

Common Questions About Port San Luis, CA Tides

Show All
What time does the tide turn (slack tide) in Port San Luis, CA today?

Slack tide in Port San Luis, CA is approximately 12:50 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 38% 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 (38% 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