Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide (tomorrow) : 6:13 am (-0.7 ft)
Next high tide : in 1h 42m 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 - Jul 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:193.06:355.61:120.611:46 AM2.15:528:21Waxing Gibbous1Wed
2Thu8:453.27:195.72:100.112:392.55:528:21Waxing Gibbous2Thu
3Fri9:453.38:005.72:58-0.21:312.75:538:21Waxing Gibbous3Fri
4Sat10:303.58:395.83:38-0.52:182.85:538:21Waxing Gibbous4Sat
5Sun11:073.59:155.84:15-0.62:592.85:548:21Full Moon5Sun
6Mon11:393.69:505.84:50-0.63:372.85:548:20Full Moon6Mon
7Tue12:093.65:23-0.64:142.75:558:20Full Moon7Tue
8Wed12:393.75:54-0.64:542.75:568:20Full Moon8Wed
9Thu1:083.86:25-0.45:372.65:568:20Waning Gibbous9Thu
10Fri1:383.96:54-0.26:242.65:578:19Waning Gibbous10Fri
11Sat12:104.92:094.17:220.17:162.55:578:19Waning Gibbous11Sat
12Sun12:504.42:414.37:490.58:172.45:588:19Waning Gibbous12Sun
13Mon1:383.93:154.58:170.99:352.25:598:18Third Quarter13Mon
14Tue2:433.43:544.88:481.411:011.75:598:18Third Quarter14Tue
15Wed4:222.94:385.19:261.96:008:17Third Quarter15Wed
16Thu6:172.85:265.512:161.110:17 AM2.36:008:17Third Quarter16Thu
17Fri7:583.06:185.91:180.411:21 AM2.66:018:16Waning Crescent17Fri
18Sat9:013.27:136.32:12-0.312:302.76:028:16Waning Crescent18Sat
19Sun9:463.58:076.63:00-0.81:382.66:028:15Waning Crescent19Sun
20Mon10:263.88:596.93:45-1.32:392.56:038:15New Moon20Mon
21Tue11:054.09:506.94:28-1.53:362.26:048:14New Moon21Tue
22Wed11:444.310:416.75:11-1.54:342.06:058:13New Moon22Wed
23Thu12:244.55:53-1.35:321.86:058:13Waxing Crescent23Thu
24Fri1:044.86:33-0.96:331.66:068:12Waxing Crescent24Fri
25Sat12:265.61:465.07:12-0.37:371.56:078:11Waxing Crescent25Sat
26Sun1:234.82:295.27:500.48:491.46:078:11Waxing Crescent26Sun
27Mon2:284.03:165.38:291.110:111.26:088:10First Quarter27Mon
28Tue3:543.44:085.39:111.811:351.06:098:09First Quarter28Tue
29Wed5:443.15:045.310:032.46:108:08First Quarter29Wed
30Thu7:403.16:005.412:490.611:12 AM2.86:108:07First Quarter30Thu
31Fri8:563.46:545.41:500.312:243.06:118:07Waxing 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 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