Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Thursday, July 2, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 7:17 am (-0.4 ft)
Next high tide : in 5h 55m at 11:45 pm (5.3 ft)
Sunset today : 11:28 pm
Sunrise tomorrow : 8:59 am
Moon phase : Waning Gibbous (94% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - May 2040

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:545.64:113.48:47-0.97:383.09:1710:56Waning Gibbous1Tue
2Wed1:555.35:303.69:58-0.89:213.19:1610:56Third Quarter2Wed
3Thu3:134.96:273.911:06-0.711:142.89:1510:57Third Quarter3Thu
4Fri4:424.67:104.212:07-0.59:1410:58Third Quarter4Fri
5Sat6:044.47:464.612:362.212:59-0.39:1310:59Waning Crescent5Sat
6Sun7:164.38:184.91:401.61:430.09:1211:00Waning Crescent6Sun
7Mon8:184.28:485.22:320.92:220.39:1111:00Waning Crescent7Mon
8Tue9:134.19:155.53:180.42:570.89:1011:01Waning Crescent8Tue
9Wed10:043.99:425.63:59-0.13:281.29:0911:02New Moon9Wed
10Thu10:543.810:095.64:40-0.43:571.79:0911:03New Moon10Thu
11Fri11:453.610:365.65:19-0.54:262.19:0811:04New Moon11Fri
12Sat12:383.55:58-0.64:552.49:0711:04New Moon12Sat
13Sun1:343.46:38-0.55:252.79:0611:05Waxing Crescent13Sun
14Mon2:373.37:20-0.45:592.99:0511:06Waxing Crescent14Mon
15Tue12:105.03:563.38:07-0.26:423.19:0511:07Waxing Crescent15Tue
16Wed12:494.75:113.48:590.07:473.39:0411:08Waxing Crescent16Wed
17Thu1:394.36:013.69:570.29:423.39:0311:08First Quarter17Thu
18Fri2:464.06:343.810:530.311:243.09:0311:09First Quarter18Fri
19Sat4:113.87:004.011:410.49:0211:10First Quarter19Sat
20Sun5:303.77:224.312:312.512:220.59:0111:11First Quarter20Sun
21Mon6:403.67:444.71:221.912:590.79:0111:11Waxing Gibbous21Mon
22Tue7:443.78:085.12:061.21:330.99:0011:12Waxing Gibbous22Tue
23Wed8:423.78:355.52:480.52:081.29:0011:13Waxing Gibbous23Wed
24Thu9:373.89:056.03:29-0.12:431.58:5911:14Waxing Gibbous24Thu
25Fri10:323.89:396.34:13-0.73:201.98:5911:14Full Moon25Fri
26Sat11:303.710:186.44:59-1.23:592.28:5811:15Full Moon26Sat
27Sun12:313.75:48-1.54:432.48:5811:16Full Moon27Sun
28Mon1:333.76:40-1.65:352.78:5711:16Waning Gibbous28Mon
29Tue2:383.77:34-1.56:372.88:5711:17Waning Gibbous29Tue
30Wed12:455.93:463.88:30-1.37:532.98:5711:18Waning Gibbous30Wed
31Thu1:475.34:464.19:30-0.99:292.88:5611:18Third Quarter31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (9412110)

Common Questions About Port San Luis, CA Tides

Show All
What time does the tide turn (slack tide) in Port San Luis, CA today?

Slack tide in Port San Luis, CA is approximately 3:31 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 94% 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 (94% 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