Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Sunday, August 2, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 7:24 pm (2.0 ft)
Next high tide : in 3h 42m at 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 - Jul 2092

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue9:473.48:365.63:240.22:152.35:538:21Waning Crescent1Tue
2Wed10:293.59:075.73:58-0.12:512.45:538:21Waning Crescent2Wed
3Thu11:073.69:395.74:32-0.33:262.55:548:21New Moon3Thu
4Fri11:453.710:125.75:05-0.44:032.65:548:21New Moon4Fri
5Sat12:233.75:39-0.54:422.65:558:21New Moon5Sat
6Sun1:013.86:13-0.55:242.65:558:20New Moon6Sun
7Mon1:393.96:48-0.46:112.75:568:20Waxing Crescent7Mon
8Tue12:025.32:184.07:23-0.37:042.75:568:20Waxing Crescent8Tue
9Wed12:454.93:004.18:000.08:072.65:578:19Waxing Crescent9Wed
10Thu1:374.53:454.48:410.39:262.45:578:19First Quarter10Thu
11Fri2:424.04:304.79:250.710:522.05:588:19First Quarter11Fri
12Sat4:073.65:155.110:161.15:598:18First Quarter12Sat
13Sun5:403.46:025.512:071.411:10 AM1.55:598:18First Quarter13Sun
14Mon7:093.46:505.91:120.612:071.86:008:18Waxing Gibbous14Mon
15Tue8:233.67:396.32:09-0.11:052.06:018:17Waxing Gibbous15Tue
16Wed9:233.88:276.62:59-0.72:022.16:018:17Waxing Gibbous16Wed
17Thu10:144.09:156.73:47-1.12:562.16:028:16Full Moon17Thu
18Fri11:024.210:026.74:33-1.33:492.16:038:15Full Moon18Fri
19Sat11:494.310:506.55:18-1.44:432.16:038:15Full Moon19Sat
20Sun12:354.46:03-1.25:372.06:048:14Waning Gibbous20Sun
21Mon1:204.56:46-0.96:342.16:058:14Waning Gibbous21Mon
22Tue12:285.62:054.67:28-0.47:332.16:058:13Waning Gibbous22Tue
23Wed1:194.92:524.68:090.18:392.16:068:12Waning Gibbous23Wed
24Thu2:154.33:424.78:520.79:592.06:078:12Third Quarter24Thu
25Fri3:263.74:324.79:381.311:221.86:088:11Third Quarter25Fri
26Sat4:543.35:204.810:291.86:088:10Third Quarter26Sat
27Sun6:273.26:075.012:351.411:22 AM2.26:098:09Third Quarter27Sun
28Mon7:513.26:515.11:341.012:162.46:108:08Waning Crescent28Mon
29Tue8:503.47:325.32:210.61:072.66:118:08Waning Crescent29Tue
30Wed9:323.68:105.52:590.31:532.66:118:07Waning Crescent30Wed
31Thu10:073.78:465.73:340.02:352.56:128:06Waning Crescent31Thu
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 4:30 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 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