Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 6:13 am (-0.7 ft)
Next high tide (tomorrow) : in 25m at 10:33 pm (5.7 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:52 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jun 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon5:453.66:365.212:191.411:48 AM0.85:498:12First Quarter1Mon
2Tue7:103.47:145.51:260.812:341.35:498:12Waxing Gibbous2Tue
3Wed8:263.37:515.72:210.21:171.85:498:13Waxing Gibbous3Wed
4Thu9:293.48:255.83:08-0.31:582.15:488:14Waxing Gibbous4Thu
5Fri10:233.48:585.93:49-0.62:362.45:488:14Full Moon5Fri
6Sat11:113.59:305.84:28-0.73:122.65:488:15Full Moon6Sat
7Sun11:563.510:035.75:05-0.83:472.75:488:15Full Moon7Sun
8Mon12:373.55:42-0.84:232.85:488:16Full Moon8Mon
9Tue1:173.56:19-0.75:032.85:488:16Full Moon9Tue
10Wed1:573.56:55-0.65:472.95:478:17Waning Gibbous10Wed
11Thu2:383.67:31-0.46:382.95:478:17Waning Gibbous11Thu
12Fri12:294.83:203.78:06-0.17:362.95:478:18Waning Gibbous12Fri
13Sat1:114.44:003.98:430.28:522.85:478:18Waning Gibbous13Sat
14Sun2:023.94:364.19:200.510:232.65:478:18Third Quarter14Sun
15Mon3:133.55:094.49:590.911:432.15:488:19Third Quarter15Mon
16Tue4:443.15:424.810:401.35:488:19Third Quarter16Tue
17Wed6:192.96:165.212:471.411:23 AM1.75:488:19Third Quarter17Wed
18Thu7:463.06:555.71:410.712:082.05:488:20Waning Crescent18Thu
19Fri8:563.27:376.12:28-0.112:582.35:488:20Waning Crescent19Fri
20Sat9:523.48:226.53:14-0.81:512.45:488:20Waning Crescent20Sat
21Sun10:433.69:096.83:59-1.32:442.55:498:20New Moon21Sun
22Mon11:313.79:576.84:46-1.63:382.55:498:21New Moon22Mon
23Tue12:183.95:32-1.84:352.45:498:21New Moon23Tue
24Wed1:044.06:19-1.75:362.35:498:21Waxing Crescent24Wed
25Thu1:514.27:04-1.56:422.35:508:21Waxing Crescent25Thu
26Fri12:355.82:384.57:49-1.07:522.25:508:21Waxing Crescent26Fri
27Sat1:345.13:264.78:33-0.49:122.05:508:21First Quarter27Sat
28Sun2:404.34:155.09:190.310:401.65:518:21First Quarter28Sun
29Mon4:033.65:035.210:061.05:518:21First Quarter29Mon
30Tue5:393.25:505.412:021.110:56 AM1.65:528:21First Quarter30Tue
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 2:23 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 99% 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 (99% 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