Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, August 2, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 2h 07m at 7:03 am (0.4 ft)
Next high tide : 1:37 pm (4.6 ft)
Sunset today : 8:05 pm
Sunrise tomorrow : 6:13 am
Moon phase : Waning Gibbous (83% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Mar 2092

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:345.05:493.211:090.010:192.36:305:59Third Quarter1Sat
2Sun4:445.27:013.512:16-0.46:296:00Waning Crescent2Sun
3Mon5:505.37:503.81:11-0.76:276:01Waning Crescent3Mon
4Tue6:495.58:294.112:462.01:57-0.86:266:02Waning Crescent4Tue
5Wed7:405.59:034.31:401.72:38-0.96:256:02Waning Crescent5Wed
6Thu8:265.59:354.42:261.43:15-0.86:236:03New Moon6Thu
7Fri9:085.410:064.53:081.23:49-0.56:226:04New Moon7Fri
8Sat9:485.110:364.53:491.04:21-0.26:216:05New Moon8Sat
9Sun11:284.85:300.95:510.27:197:06New Moon9Sun
10Mon12:054.612:094.36:100.96:200.77:187:07Waxing Crescent10Mon
11Tue12:344.512:533.96:520.96:481.17:177:08Waxing Crescent11Tue
12Wed1:054.51:423.57:381.07:161.67:157:08Waxing Crescent12Wed
13Thu1:384.42:473.18:331.07:462.07:147:09Waxing Crescent13Thu
14Fri2:174.24:262.89:451.18:262.47:127:10First Quarter14Fri
15Sat3:104.16:192.911:071.09:452.77:117:11First Quarter15Sat
16Sun4:194.17:373.112:180.77:107:12First Quarter16Sun
17Mon5:304.28:163.41:130.47:087:13First Quarter17Mon
18Tue6:324.48:443.612:402.61:570.17:077:13Waxing Gibbous18Tue
19Wed7:264.79:093.91:342.22:34-0.27:057:14Waxing Gibbous19Wed
20Thu8:135.09:354.12:181.93:08-0.47:047:15Waxing Gibbous20Thu
21Fri8:575.210:024.43:001.43:41-0.47:037:16Waxing Gibbous21Fri
22Sat9:415.210:314.73:411.04:15-0.47:017:17Full Moon22Sat
23Sun10:265.211:035.04:250.64:49-0.27:007:18Full Moon23Sun
24Mon11:155.011:385.25:120.25:250.26:587:18Full Moon24Mon
25Tue12:084.66:020.06:030.66:577:19Waning Gibbous25Tue
26Wed12:175.41:074.16:57-0.26:431.16:567:20Waning Gibbous26Wed
27Thu1:005.42:153.77:57-0.27:281.76:547:21Waning Gibbous27Thu
28Fri1:495.23:423.49:07-0.28:252.16:537:22Third Quarter28Fri
29Sat2:495.05:193.410:26-0.29:512.56:517:22Third Quarter29Sat
30Sun4:054.86:423.611:41-0.311:302.56:507:23Third Quarter30Sun
31Mon5:254.77:413.912:47-0.46:497:24Third Quarter31Mon
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 10:20 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 83% 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 (83% 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