Tides Today & Tomorrow in Port San Luis, CA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in Port San Luis, CA.
Next low tide : 11:37 am (1.7 ft)
Next high tide : in 2h 47m at 6:25 am (3.1 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:49 am
Moon phase : First Quarter (69% illuminated)
Tide Station Location : Station #9412110
Common Questions About Tides

Port San Luis, CA Tides - Jan 2038

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:156.07:423.61:29-0.27:115:02Waning Crescent1Fri
2Sat6:586.38:423.712:271.92:17-0.87:115:02Waning Crescent2Sat
3Sun7:396.49:343.81:172.13:01-1.17:115:03New Moon3Sun
4Mon8:206.410:223.92:042.33:44-1.37:115:04New Moon4Mon
5Tue9:006.311:073.92:502.44:26-1.27:115:05New Moon5Tue
6Wed9:406.111:503.93:352.55:06-1.17:115:06New Moon6Wed
7Thu10:215.84:212.55:45-0.87:115:07Waxing Crescent7Thu
8Fri12:323.911:01 AM5.35:092.66:23-0.57:115:07Waxing Crescent8Fri
9Sat1:143.911:43 AM4.85:592.66:59-0.17:115:08Waxing Crescent9Sat
10Sun1:584.012:274.36:572.77:370.47:115:09Waxing Crescent10Sun
11Mon2:434.11:213.78:122.68:160.97:115:10First Quarter11Mon
12Tue3:284.22:383.29:462.48:591.37:115:11First Quarter12Tue
13Wed4:104.44:172.911:081.99:451.77:115:12First Quarter13Wed
14Thu4:494.65:562.812:111.47:105:13First Quarter14Thu
15Fri5:274.97:163.012:590.87:105:14Waxing Gibbous15Fri
16Sat6:045.28:103.21:380.37:105:15Waxing Gibbous16Sat
17Sun6:425.58:523.412:122.42:14-0.27:105:16Waxing Gibbous17Sun
18Mon7:205.89:303.612:592.52:50-0.77:095:17Waxing Gibbous18Mon
19Tue7:586.010:073.71:432.53:26-1.07:095:18Full Moon19Tue
20Wed8:386.210:443.82:262.44:04-1.37:085:19Full Moon20Wed
21Thu9:196.311:223.93:112.34:43-1.37:085:20Full Moon21Thu
22Fri10:036.14:002.25:23-1.27:075:21Full Moon22Fri
23Sat12:024.110:51 AM5.84:532.16:02-1.07:075:22Waning Gibbous23Sat
24Sun12:434.311:42 AM5.35:532.06:43-0.57:065:23Waning Gibbous24Sun
25Mon1:274.512:404.67:001.97:260.07:065:24Waning Gibbous25Mon
26Tue2:154.71:523.98:211.78:130.77:055:25Third Quarter26Tue
27Wed3:084.93:263.39:521.39:071.37:055:26Third Quarter27Wed
28Thu4:025.25:123.111:150.710:091.87:045:27Third Quarter28Thu
29Fri4:575.56:483.212:240.17:035:28Waning Crescent29Fri
30Sat5:505.77:583.41:21-0.57:035:29Waning Crescent30Sat
31Sun6:425.98:483.712:192.32:09-0.97:025:30Waning Crescent31Sun
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 9:01 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 transitional phase. Tonight's moon is 69% 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 First Quarter (69% 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