Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, July 28, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 3:36 pm (2.7 ft)
Next high tide : in 1h 29m at 11:23 am (3.7 ft)
Sunset today : 8:09 pm
Sunrise tomorrow : 6:09 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Apr 2084

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:474.98:534.61:551.52:27-0.46:477:25Waning Crescent1Sat
2Sun8:434.89:225.02:470.93:04-0.16:467:26Waning Crescent2Sun
3Mon9:334.79:505.23:330.43:370.36:447:26New Moon3Mon
4Tue10:204.410:195.44:160.04:090.76:437:27New Moon4Tue
5Wed11:084.110:475.44:59-0.24:391.16:427:28New Moon5Wed
6Thu11:563.811:175.45:41-0.35:081.66:407:29New Moon6Thu
7Fri12:483.56:23-0.35:372.06:397:30Waxing Crescent7Fri
8Sat1:443.37:07-0.26:052.36:387:30Waxing Crescent8Sat
9Sun12:205.02:553.17:550.06:362.66:367:31Waxing Crescent9Sun
10Mon12:584.74:343.08:530.37:132.96:357:32Waxing Crescent10Mon
11Tue1:444.46:063.110:020.48:303.06:347:33First Quarter11Tue
12Wed2:504.16:573.311:100.410:493.06:327:34First Quarter12Wed
13Thu4:163.97:263.512:070.46:317:34First Quarter13Thu
14Fri5:343.97:493.812:122.612:510.46:307:35First Quarter14Fri
15Sat6:393.98:094.11:092.21:280.46:297:36Waxing Gibbous15Sat
16Sun7:354.08:294.41:541.72:000.56:277:37Waxing Gibbous16Sun
17Mon8:264.18:514.82:341.12:300.76:267:38Waxing Gibbous17Mon
18Tue9:134.19:165.23:140.52:590.96:257:39Waxing Gibbous18Tue
19Wed10:014.19:445.63:54-0.13:301.26:247:39Full Moon19Wed
20Thu10:514.010:155.94:36-0.64:021.56:227:40Full Moon20Thu
21Fri11:453.810:526.05:22-0.94:371.86:217:41Full Moon21Fri
22Sat12:443.66:12-1.15:162.16:207:42Waning Gibbous22Sat
23Sun1:493.57:05-1.16:012.46:197:43Waning Gibbous23Sun
24Mon12:215.83:033.48:03-1.06:582.66:187:43Waning Gibbous24Mon
25Tue1:175.54:233.59:07-0.88:172.86:167:44Third Quarter25Tue
26Wed2:245.15:293.710:14-0.610:052.76:157:45Third Quarter26Wed
27Thu3:484.66:204.011:17-0.411:422.36:147:46Third Quarter27Thu
28Fri5:144.37:024.412:13-0.26:137:47Third Quarter28Fri
29Sat6:324.17:394.812:561.71:010.16:127:48Waning Crescent29Sat
30Sun7:424.08:125.21:561.01:440.56:117:48Waning Crescent30Sun
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 1:29 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 spring phase. Tonight's moon is 99% 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 Full Moon (99% 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