Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Friday, July 3, 2026
The tide is currently falling in Port San Luis, CA.
Next low tide : in 24m at 6:39 pm (2.8 ft)
Next high tide (tomorrow) : 12:25 am (4.9 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:53 am
Moon phase : Waning Gibbous (87% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Mar 2054

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:354.65:503.111:070.610:202.46:315:58Third Quarter1Sun
2Mon4:414.57:043.312:120.36:305:59Third Quarter2Mon
3Tue5:424.67:483.51:030.16:286:00Waning Crescent3Tue
4Wed6:344.78:203.712:362.31:44-0.16:276:01Waning Crescent4Wed
5Thu7:184.88:463.81:212.12:18-0.26:266:02Waning Crescent5Thu
6Fri7:554.99:103.91:571.92:48-0.26:256:03Waning Crescent6Fri
7Sat8:305.09:334.12:301.63:16-0.26:236:04New Moon7Sat
8Sun10:034.910:584.24:031.44:43-0.17:227:04New Moon8Sun
9Mon10:374.811:244.34:371.25:100.17:207:05New Moon9Mon
10Tue11:134.611:514.55:141.15:370.37:197:06New Moon10Tue
11Wed11:524.45:531.06:050.67:187:07Waxing Crescent11Wed
12Thu12:204.612:364.06:360.96:341.07:167:08Waxing Crescent12Thu
13Fri12:514.61:273.67:250.87:051.47:157:09Waxing Crescent13Fri
14Sat1:284.72:343.28:230.87:421.87:147:10Waxing Crescent14Sat
15Sun2:134.74:093.09:370.78:332.27:127:10First Quarter15Sun
16Mon3:134.75:513.011:000.49:592.57:117:11First Quarter16Mon
17Tue4:274.77:083.312:120.07:097:12First Quarter17Tue
18Wed5:424.97:593.71:12-0.37:087:13Waxing Gibbous18Wed
19Thu6:505.28:394.012:492.12:03-0.77:077:14Waxing Gibbous19Thu
20Fri7:515.49:154.41:521.72:48-0.87:057:14Waxing Gibbous20Fri
21Sat8:465.69:504.82:461.13:30-0.87:047:15Waxing Gibbous21Sat
22Sun9:375.510:255.03:350.74:09-0.77:027:16Full Moon22Sun
23Mon10:265.411:025.24:240.34:48-0.37:017:17Full Moon23Mon
24Tue11:165.011:395.35:130.05:260.17:007:18Full Moon24Tue
25Wed12:084.66:03-0.16:040.66:587:19Waning Gibbous25Wed
26Thu12:175.31:034.16:54-0.16:421.26:577:19Waning Gibbous26Thu
27Fri12:575.12:043.77:480.17:221.76:557:20Waning Gibbous27Fri
28Sat1:394.83:203.38:480.38:082.26:547:21Waning Gibbous28Sat
29Sun2:284.54:563.210:000.49:162.66:527:22Third Quarter29Sun
30Mon3:324.26:263.311:150.510:592.76:517:23Third Quarter30Mon
31Tue4:484.17:293.512:210.46:507:23Third Quarter31Tue
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 9:32 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 87% 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 (87% 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