Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Thursday, July 9, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 1:51 am (0.0 ft)
Next high tide : in 5h 32m at 6:04 pm (5.8 ft)
Sunset today : 11:26 pm
Sunrise tomorrow : 9:03 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - May 2002

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:595.34:003.58:41-0.67:482.99:1810:55Waning Gibbous1Wed
2Thu1:514.85:253.69:47-0.39:223.19:1710:56Third Quarter2Thu
3Fri2:594.46:293.810:55-0.111:163.09:1610:56Third Quarter3Fri
4Sat4:234.07:134.011:550.19:1510:57Third Quarter4Sat
5Sun5:433.97:464.112:362.612:460.29:1410:58Third Quarter5Sun
6Mon6:503.88:124.31:312.11:280.49:1310:59Waning Crescent6Mon
7Tue7:473.88:344.52:141.62:020.69:1211:00Waning Crescent7Tue
8Wed8:353.88:544.82:501.22:310.89:1111:01Waning Crescent8Wed
9Thu9:193.89:155.03:230.82:571.19:1011:01Waning Crescent9Thu
10Fri10:013.79:375.23:560.43:221.49:0911:02New Moon10Fri
11Sat10:443.710:005.44:300.03:481.79:0811:03New Moon11Sat
12Sun11:303.610:265.55:06-0.24:142.09:0811:04New Moon12Sun
13Mon12:203.55:45-0.44:432.39:0711:05New Moon13Mon
14Tue1:163.46:26-0.65:142.69:0611:05Waxing Crescent14Tue
15Wed2:193.37:12-0.65:522.89:0511:06Waxing Crescent15Wed
16Thu12:085.43:363.38:02-0.66:413.09:0411:07Waxing Crescent16Thu
17Fri12:565.14:493.58:59-0.57:573.29:0411:08Waxing Crescent17Fri
18Sat1:564.85:403.710:01-0.49:483.19:0311:08First Quarter18Sat
19Sun3:144.56:194.111:01-0.311:262.69:0211:09First Quarter19Sun
20Mon4:424.36:544.511:54-0.29:0211:10First Quarter20Mon
21Tue6:044.17:274.912:392.012:410.09:0111:11Waxing Gibbous21Tue
22Wed7:184.18:005.41:401.11:260.49:0111:11Waxing Gibbous22Wed
23Thu8:264.18:345.92:330.32:070.79:0011:12Waxing Gibbous23Thu
24Fri9:284.09:096.23:23-0.42:481.28:5911:13Waxing Gibbous24Fri
25Sat10:263.99:456.44:11-0.93:271.68:5911:14Full Moon25Sat
26Sun11:253.910:236.44:59-1.24:082.08:5811:14Full Moon26Sun
27Mon12:253.85:47-1.44:502.38:5811:15Full Moon27Mon
28Tue1:253.76:35-1.35:372.68:5811:16Waning Gibbous28Tue
29Wed2:283.77:24-1.16:302.98:5711:16Waning Gibbous29Wed
30Thu12:305.43:343.78:14-0.77:313.08:5711:17Waning Gibbous30Thu
31Fri1:194.94:383.89:07-0.48:513.18:5611:18Waning Gibbous31Fri
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 9:57 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 transitional phase. Tonight's moon is 30% 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 shifting between spring and neap.

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 Crescent (30% illuminated). This places Port San Luis, CA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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