Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 10:10 pm (2.2 ft)
Next high tide : in 4h 03m at 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 - May 2022

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:483.710:495.45:26-0.34:391.96:117:48New Moon1Sun
2Mon12:393.56:05-0.45:052.36:107:49New Moon2Mon
3Tue1:363.36:45-0.35:322.66:097:50Waxing Crescent3Tue
4Wed2:453.27:29-0.26:002.96:087:51Waxing Crescent4Wed
5Thu12:174.94:193.28:180.06:343.16:077:52Waxing Crescent5Thu
6Fri12:574.69:160.16:067:52Waxing Crescent6Fri
7Sat1:494.36:353.510:200.29:543.36:057:53First Quarter7Sat
8Sun3:044.07:023.711:180.311:383.06:047:54First Quarter8Sun
9Mon4:333.87:243.912:060.36:037:55First Quarter9Mon
10Tue5:493.87:434.212:422.512:470.36:027:56First Quarter10Tue
11Wed6:553.98:044.61:311.91:230.56:017:56Waxing Gibbous11Wed
12Thu7:553.98:275.02:141.21:560.76:017:57Waxing Gibbous12Thu
13Fri8:503.98:535.52:560.52:290.96:007:58Waxing Gibbous13Fri
14Sat9:443.99:225.93:38-0.23:031.35:597:59Full Moon14Sat
15Sun10:403.99:556.24:23-0.83:381.75:588:00Full Moon15Sun
16Mon11:393.810:336.45:10-1.24:162.05:578:00Full Moon16Mon
17Tue12:413.76:01-1.54:582.45:578:01Waning Gibbous17Tue
18Wed1:483.66:54-1.55:482.65:568:02Waning Gibbous18Wed
19Thu12:056.13:013.67:51-1.46:502.95:558:03Waning Gibbous19Thu
20Fri1:015.74:143.78:52-1.28:103.05:558:03Waning Gibbous20Fri
21Sat2:065.25:174.09:55-0.99:562.95:548:04Third Quarter21Sat
22Sun3:254.76:074.310:57-0.511:332.55:548:05Third Quarter22Sun
23Mon4:514.36:494.611:51-0.25:538:06Third Quarter23Mon
24Tue6:124.07:254.912:491.812:400.25:528:06Waning Crescent24Tue
25Wed7:253.87:575.21:501.21:220.75:528:07Waning Crescent25Wed
26Thu8:313.78:275.52:400.62:001.15:518:08Waning Crescent26Thu
27Fri9:273.68:545.63:230.12:331.65:518:09Waning Crescent27Fri
28Sat10:193.59:205.74:02-0.23:032.05:518:09New Moon28Sat
29Sun11:093.59:465.74:39-0.53:312.35:508:10New Moon29Sun
30Mon11:593.510:145.65:15-0.64:002.65:508:11New Moon30Mon
31Tue12:493.45:52-0.64:302.85:498:11New Moon31Tue
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 7:15 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