Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Wednesday, July 29, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 5:40 am (-0.5 ft)
Next high tide : in 3h 01m at 10:21 pm (5.8 ft)
Sunset today : 11:15 pm
Sunrise tomorrow : 9:17 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Sep 1983

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:123.45:215.412:110.710:45 AM3.09:4210:37Third Quarter1Thu
2Fri8:133.66:265.81:130.212:083.09:4210:36Waning Crescent2Fri
3Sat8:533.97:276.12:05-0.31:172.79:4310:34Waning Crescent3Sat
4Sun9:284.28:236.42:51-0.72:162.39:4410:33Waning Crescent4Sun
5Mon10:024.59:156.53:34-0.93:091.99:4510:31New Moon5Mon
6Tue10:374.810:056.44:15-0.94:001.59:4510:30New Moon6Tue
7Wed11:135.110:566.14:55-0.64:521.19:4610:29New Moon7Wed
8Thu11:505.311:495.65:34-0.25:470.99:4710:27New Moon8Thu
9Fri12:285.46:120.36:430.89:4810:26Waxing Crescent9Fri
10Sat12:455.01:085.56:501.07:420.89:4810:24Waxing Crescent10Sat
11Sun1:474.31:515.47:281.78:490.89:4910:23Waxing Crescent11Sun
12Mon3:053.82:415.28:112.310:070.89:5010:22First Quarter12Mon
13Tue4:493.63:415.09:092.911:270.79:5010:20First Quarter13Tue
14Wed6:383.64:524.910:423.29:5110:19First Quarter14Wed
15Thu7:543.96:024.912:370.612:123.29:5210:17First Quarter15Thu
16Fri8:374.07:025.01:340.41:183.09:5310:16Waxing Gibbous16Fri
17Sat9:074.27:525.12:190.32:042.79:5310:14Waxing Gibbous17Sat
18Sun9:314.38:335.22:560.22:402.49:5410:13Waxing Gibbous18Sun
19Mon9:524.49:095.33:270.23:132.19:5510:11Waxing Gibbous19Mon
20Tue10:134.59:445.33:550.33:441.99:5610:10Full Moon20Tue
21Wed10:354.610:185.24:210.54:181.69:5610:09Full Moon21Wed
22Thu10:584.810:555.04:460.74:531.49:5710:07Full Moon22Thu
23Fri11:214.911:344.75:111.05:321.29:5810:06Full Moon23Fri
24Sat11:475.15:371.36:131.19:5910:04Waning Gibbous24Sat
25Sun12:194.312:155.26:031.77:001.09:5910:03Waning Gibbous25Sun
26Mon1:114.012:475.26:302.27:540.910:0010:01Waning Gibbous26Mon
27Tue2:203.61:265.27:002.69:030.810:0110:00Waning Gibbous27Tue
28Wed4:023.42:185.27:393.010:240.710:029:58Third Quarter28Wed
29Thu5:563.53:325.18:553.311:400.410:029:57Third Quarter29Thu
30Fri7:083.84:565.210:553.310:039:56Third Quarter30Fri
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 2:00 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 100% 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 (100% 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