Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, July 24, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide (tomorrow) : in 7h 13m at 3:00 am (0.0 ft)
Next high tide (tomorrow) : 10:04 am (3.5 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 6:06 am
Moon phase : Waxing Gibbous (80% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Mar 1981

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:454.78:033.41:16-0.16:325:58Waning Crescent1Sun
2Mon6:355.08:303.712:272.41:54-0.46:305:59Waning Crescent2Mon
3Tue7:205.38:573.91:152.12:29-0.76:296:00Waning Crescent3Tue
4Wed8:035.69:264.11:591.83:03-0.96:286:01New Moon4Wed
5Thu8:465.79:574.42:421.43:38-0.96:266:02New Moon5Thu
6Fri9:315.610:314.73:271.14:14-0.76:256:03New Moon6Fri
7Sat10:185.411:074.94:160.84:51-0.46:246:03New Moon7Sat
8Sun11:104.911:455.15:080.55:280.16:226:04Waxing Crescent8Sun
9Mon12:074.46:050.46:070.66:216:05Waxing Crescent9Mon
10Tue12:285.21:153.87:080.36:501.36:206:06Waxing Crescent10Tue
11Wed1:175.12:443.38:240.37:441.86:186:07First Quarter11Wed
12Thu2:165.14:293.29:490.19:002.36:176:08First Quarter12Thu
13Fri3:275.06:033.411:08-0.110:322.46:156:08First Quarter13Fri
14Sat4:405.07:073.712:14-0.46:146:09First Quarter14Sat
15Sun5:495.07:523.91:09-0.66:136:10Waxing Gibbous15Sun
16Mon6:485.18:274.112:552.01:54-0.66:116:11Waxing Gibbous16Mon
17Tue7:385.28:574.31:451.72:32-0.66:106:12Waxing Gibbous17Tue
18Wed8:225.19:254.42:271.43:06-0.46:086:13Full Moon18Wed
19Thu9:015.09:524.53:051.13:36-0.16:076:13Full Moon19Thu
20Fri9:394.810:184.53:420.94:040.26:066:14Full Moon20Fri
21Sat10:164.510:434.64:180.84:300.56:046:15Full Moon21Sat
22Sun10:554.211:094.64:560.74:560.96:036:16Waning Gibbous22Sun
23Mon11:373.811:364.55:350.75:201.36:016:17Waning Gibbous23Mon
24Tue12:253.56:180.75:451.76:006:18Waning Gibbous24Tue
25Wed12:054.41:243.17:070.86:112.15:596:18Waning Gibbous25Wed
26Thu12:394.32:542.98:100.86:422.55:576:19Third Quarter26Thu
27Fri1:244.24:502.99:270.87:392.85:566:20Third Quarter27Fri
28Sat2:304.16:143.110:410.69:452.95:546:21Third Quarter28Sat
29Sun3:514.26:543.411:400.311:132.75:536:22Third Quarter29Sun
30Mon5:024.47:213.712:290.05:526:22Waning Crescent30Mon
31Tue6:034.67:474.012:132.31:10-0.35:506:23Waning Crescent31Tue
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 6:32 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 80% 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 Waxing Gibbous (80% 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